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The butterflies of Cristalino Lodge, in the Brazilian southern Amazonia: An updated species list with a significant contribution from citizen science

As borboletas do Cristalino Lodge, no sul da Amazônia: Uma lista atualizada de espécies com contribuição significativa da ciência cidadã

Abstract

The richest butterfly communities in the world are found in the Amazon rainforest. Despite of this, and the importance of species inventories for the knowledge of diversity patterns, there are few comprehensive lists of butterflies for localities in the Brazilian Amazon. Here, we present an updated list of the butterflies of Cristalino Lodge (Alta Floresta, Mato Grosso, Brazil), in southern Amazonia, based on specimens collected by researchers and photographic records taken by ecotourists, butterfly watchers, and tour guides. With 1010 species recorded, this is currently the largest list of butterflies published for a single locality in Brazil and the first to reach (and surpass) 1000 species, with more than one third of the records coming from citizen science. The region has about 29% of the butterfly species in Brazil and one of the greatest richnesses known in the country, inferior only to areas in the western Amazon. Its fauna is mainly composed of species widely distributed in lowland Amazonia, with the addition of some species typical of the Cerrado. It has a relatively low number of species of the tribe Ithomiini (Nymphalidae: Danainae), generally considered a good indicator of the total butterfly diversity in neotropical forests, which points to the need for caution when using a single taxonomic group as a surrogate of richness of entire communities. The present work highlights the importance of citizen science and ecotourism centers for inventories and data on species distribution in diverse tropical forests.

Keywords
Amazon Forest; arch of deforestation; butterfly watching; ecotourism; iNaturalist

Resumo

As comunidades de borboletas mais ricas do mundo são encontradas na Amazônia. Apesar disso, e da importância dos inventários de espécies para o conhecimento dos padrões de diversidade, existem poucas listas abrangentes de borboletas para localidades da Amazônia brasileira. Aqui, apresentamos uma lista atualizada das borboletas do Cristalino Lodge (Alta Floresta, Mato Grosso, Brasil), no sul da Amazônia, baseada em espécimes coletados por pesquisadores e em registros fotográficos feitos por ecoturistas, observadores de borboletas e guias turísticos. Com 1010 espécies registradas, essa é atualmente a maior lista de borboletas publicada para uma localidade no Brasil e a primeira a atingir 1000 espécies, sendo mais de um terço dos registros provenientes da ciência cidadã. A região apresenta cerca de 29% das espécies de borboletas do Brasil e uma das maiores riquezas conhecidas no país, inferior apenas a áreas no oeste da Amazônia. Sua fauna é composta principalmente por espécies amplamente distribuídas na planície amazônica, com adição de algumas típicas do Cerrado. Possui um número relativamente baixo de espécies da tribo Ithomiini (Nymphalidae: Danainae), que é geralmente considerada uma boa indicadora da riqueza total de borboletas em florestas neotropicais, o que aponta para a necessidade de cautela ao se usar um grupo taxonômico como previsor da riqueza de comunidades inteiras. O presente trabalho destaca a importância da ciência cidadã e dos centros de ecoturismo para inventários e dados sobre distribuição de espécies em florestas tropicais diversas.

Palavras-chave
Floresta Amazônica; arco do desmatamento; observação de borboletas; ecoturismo; iNaturalist

Introduction

The world faces a biodiversity crisis, with habitats being lost and species becoming extinct at a rate that is unprecedented in historical times (Hoekstra et al. 2005HOEKSTRA, J.M., BOUCHER, T.M., RICKETTS, T.H. & ROBERTS, C. 2005. Confronting a biome crisis: global disparities of habitat loss and protection. Ecol. Lett. 8(1):23-29., Ceballos et al. 2015CEBALLOS, G., EHRLICH, P.R., BARNOSKY, A.D., GARCÍA, A., PRINGLE, R.M. & PALMER, T.M. 2015. Accelerated modern human–induced species losses: Entering the sixth mass extinction. Sci. Adv. 1, e1400253.). In this context, local species inventories are especially important because they help to clarify diversity patterns and species distribution, and to identify efficient conservation strategies (Balmford & Gaston 1999BALMFORD, A. & GASTON, K.J. 1999. Why biodiversity surveys are good value. Nature 398(6724):204-205., Meyer et al. 2015MEYER, C., KREFT, H., GURALNICK, R. & JETZ, W. 2015. Global priorities for an effective information basis of biodiversity distributions. Nat. Commun. 6(1):1-8.). However, even for a relatively well-known group of invertebrates such as the butterflies, there are areas where available occurrence data is scanty, especially in portions of tropical forests, which contain the bulk of the planet’s terrestrial biodiversity, such as the Amazon Basin (Girardello et al. 2019GIRARDELLO, M., CHAPMAN, A., DENNIS, R., KAILA, L., BORGES, P.A.V. & SANTANGELI, A. 2019. Gaps in butterfly inventory data: A global analysis. Biol. Conserv. 236:289-295.). Historically, a great part of our knowledge of the Amazonian fauna has come from expeditions that followed rivers stopping periodically to sample, instead of focusing on single areas, and the specimens gathered by such expeditions, frequently without precise geographic data, are scattered through museum collections and in need of thorough review (Casagrande et al. 2012CASAGRANDE, M.M., MIELKE, O.H., CARNEIRO, E., RAFAEL, J.A. & HUTCHINGS, R.W. 2012. Hesperioidea e Papilionoidea (Lepidoptera) coligidos em expedição aos Rios Nhamundá e Abacaxis, Amazonas, Brasil: novos subsídios para o conhecimento da biodiversidade da Amazônia Brasileira. Rev. Bras. Entomol. 56(1):23-28.). As for studies that focus on local faunas, the richest butterfly communities in the world have been found in western Amazonia (Lamas 1985LAMAS, G. 1985. Los Papilionoidea (Lepidoptera) de la zona reservada de Tambopata, Madre de Dios, Perú. I. Papilionidae, Pieridae y Nymphalidae (en parte). Rev. Per. Ent. 27:59-73., Emmel & Austin 1990EMMEL, T.C. & AUSTIN, G.T. 1990. The tropical rain forest butterfly fauna of Rondonia, Brazil: species diversity and conservation. Trop. Lepid. 1(1):1-12., Robbins et al. 1996ROBBINS, R.K., LAMAS, G., MIELKE, O.H.H., HARVEY, D.J. & CASAGRANDE, M.M. 1996. Taxonomic composition and ecological structure of the species-rich butterfly community at Pakitza, Parque Nacional del Manu, Perú. In Manu. The Biodiversity of Southeastern Peru. La Biodiversidad del Sureste del Perú (D.E. Wilson & A. Sandoval, eds). Editorial Horizonte, Lima. p.217-252., Brown & Freitas 2002BROWN JR, K.S. & FREITAS, A.V.L. 2002. Diversidade Biológica no Alto Juruá: avaliação, causas e manutenção. In Enciclopedia da Floresta – O Alto Juruá: práticas e conhecimento das populações (M.M.C. Cunha & M.B. Almeida, org.). Companhia das Letras, São Paulo, p.33-42.). Yet, Santos et al. (2008)SANTOS, E.C., MIELKE, O.H.H. & CASAGRANDE, M.M. 2008. Butterfly inventories in Brazil: the state of the art and the priority-areas model for research aiming at conservation. Nat. Conserv. 6(2):176-198. showed that there are few species lists for the Brazilian Amazon Forest, compared to most other biomes in the country. Although the number of butterfly inventories in Brazil has increased considerably since then (Shirai et al. 2019SHIRAI, L.T., MACHADO, P A., MOTA, L.L., ROSA, A.H.B. & FREITAS, A.V.L. 2019. DnB, the Database of Nymphalids in Brazil, with a Checklist for Standardized Species Lists. J. Lepid. Soc. 73(2):93-108.), the number of comprehensive inventories for single localities in the more than 4000000 km2 of Brazilian Amazonia is still low, considering that most of the studies rely on relatively small sampling efforts (e.g., Ebert 1965EBERT, H. 1965. Uma coleção de borboletas (Lepid. Rhopal.) do Rio Amaparí (território do Amapá) com anotações taxonômicas sobre Rhopalocera do Brasil. Pap. Avulsos Dep. Zool./Secr. Agric. 18:65-85., Garcia et al. 1990GARCIA, I.P., BERGMANN, E.C. & NETTO, S.M.R. 1990. Diversidade mensal de borboletas da ilha de São Luís (MA). Arq. Inst. Biol. 57 (1-2):39-44., Mielke & Casagrande 1991MIELKE, O.H.H. & CASAGRANDE, M.M. 1991. Lepidoptera: Papilionoidea e Hesperioidea coletados na Ilha de Maracá, Alto Alegre, Roraima, parte do projeto Maracá, com uma lista complementar de Hesperiidae de Roraima. Acta Amaz. 21:175-210., Mielke et al. 2010MIELKE, O.H.H., CARNEIRO, E. & CASAGRANDE, M.M. 2010. Lepidopterofauna (Papilionoidea e Hesperioidea) do Parque Estadual do Chandless e arredores, Acre, Brasil. Biota Neotrop. 10(4):285-299. https://doi.org/10.1590/S1676-06032010000400033
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, Martins et al. 2017aMARTINS, L.P., ARAUJO, E.C., MARTINS, A.R.P., COLINS, M.S., ALMEIDA, G.C.F. & AZEVEDO, G.G. 2017a. Butterflies of Amazon and Cerrado remnants of Maranhão, Northeast Brazil. Biota Neotrop. 17(3):1-11. http://dx.doi.org/10.1590/1676-0611-BN-2017-0335
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, Oliveira et al. 2021OLIVEIRA, I.F., BACCARO, F.B., WERNECK, F.P., ZACCA, T. & HAUGAASEN, T. 2021. Marked Differences in Butterfly Assemblage Composition between Forest Types in Central Amazonia, Brazil. Forests, 12,942.), do not include actual species lists (e.g., Brown 1984BROWN JR, K.S. 1984. Species diversity and abundance in Jaru, Rondonia (Brazil). News Lepid. Soc. 3:45-47., 2005BROWN JR, K.S. 2005. Geologic, evolutionary, and ecological bases of the diversification of neotropical butterflies: implications for conservation. In Tropical rainforests: past, present and future (E. Bermingham, C.W. Dick & C. Moritz, eds). The University of Chicago Press, Chicago, p.166-201., Brown & Freitas 2002BROWN JR, K.S. & FREITAS, A.V.L. 2002. Diversidade Biológica no Alto Juruá: avaliação, causas e manutenção. In Enciclopedia da Floresta – O Alto Juruá: práticas e conhecimento das populações (M.M.C. Cunha & M.B. Almeida, org.). Companhia das Letras, São Paulo, p.33-42.), or use a small subset of the butterflies, the fruit-feeding nymphalids, to answer ecological questions (e.g., Ramos 2000RAMOS, F.A. 2000. Nymphalid butterfly communities in an amazonian forest fragment. J. Res. Lepid. 35:29-41., Ribeiro & Freitas 2012RIBEIRO, D.B. & FREITAS, A.V.L. 2012. The effect of reduced-impact logging on fruit-feeding butterflies in Central Amazon, Brazil. J. Insect Conserv. 16(5):733-744., Graça et al. 2017aGRAÇA, M.B., PEQUENO, P.A.C.L., FRANKLIN, E., SOUZA, J.L.P. & MORAIS, J.W. 2017a. Taxonomic, functional, and phylogenetic perspectives on butterfly spatial assembly in northern Amazonia. Ecol. Entomol. 42:816-826., bGRAÇA, M.B., SOUZA, J.L.P, FRANKLIN, E., MORAIS, J.W. & PEQUENO, P.A.C.L. 2017b. Sampling effort and common species: Optimizing surveys of understorey fruit-feeding butterflies in the Central Amazon. Ecol. Indic. 73:181-188., Martins et al. 2017bMARTINS, L.P., ARAUJO, E.C., MARTINS, A.R.P., DUARTE, M. & AZEVEDO, G.G. 2017b. Species diversity and community structure of fruit-feeding butterflies (Lepidoptera: Nymphalidae) in an eastern Pap. Avulsos Zool. 57(38):481-489., Montejo-Kovacevich et al. 2018MONTEJO-KOVACEVICH, G., HETHCOAT, M.G., LIM, F.K.S., MARSH, C.J., BONFANTTI, D., PERES, C.A. & EDWARDS, D.P. 2018. Impacts of selective logging management on butterflies in the Amazon. Biol. Conserv. 225:1-9., Araujo et al. 2020ARAUJO, E.C., MARTINS, L.P., DUARTE, M. & AZEVEDO, G.G. 2020. Temporal distribution of fruit-feeding butterflies (Lepidoptera, Nymphalidae) in the eastern extreme of the Amazon region. Acta Amazon. 50:12-23.W, Rabelo et al. 2021RABELO, R.M., PEREIRA, G.C.N., VALSECCHI, J. & MAGNUSSON, W.E. 2021. The Role of River Flooding as an Environmental Filter for Amazonian Butterfly Assemblages. Front. Ecol. Evol. 9:693178. doi: 10.3389/fevo.2021.693178
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). Contributing reasons for this outcome include low human population densities near these sites, difficult access, and distance to most Brazilian research centers, which makes it difficult and expensive for scientists to produce long-term inventories in most of the Brazilian Amazon Forest.

In recent years, however, the growing interest in citizen science has proven to be increasingly helpful for the documentation and generation of biodiversity data, by taking advantage of new and easier ways to gather, access, produce and share this information (Dickinson et al. 2012DICKINSON, J.L., SHIRK, J., BONTER, D., BONNEY, R., CRAIN, R.L., MARTIN, J., PHILIPS, T. & PURCELL, K. 2012. The current state of citizen science as a tool for ecological research and public engagement. Front. Ecol. Environ. 10(6):291-297., Mazumdar et al. 2018MAZUMDAR, S., CECCARONI, L., PIERA, J., HÖLKER, F., BERRE, A.J., ARLINGHAUS, R. & BOWSER, A. 2018. Citizen science technologies and new opportunities for participation. In Citizen Science: Innovation in Open Science, Society and Policy. (S. Hecker, M. Haklay, A. Bowser, Z. Makuch, J. Vogel & A. Bonn, eds). UCL Press, London, p.303-320.). Such efforts can aid in filling knowledge gaps for butterflies (Girardello et al. 2019GIRARDELLO, M., CHAPMAN, A., DENNIS, R., KAILA, L., BORGES, P.A.V. & SANTANGELI, A. 2019. Gaps in butterfly inventory data: A global analysis. Biol. Conserv. 236:289-295., Mesaglio et al. 2021MESAGLIO, T., SOH, A., KURNIAWIDJAJA, S. & SEXTON, C. 2021. ‘First Known Photographs of Living Specimens’: the power of iNaturalist for recording rare tropical butterflies. J. Insect. Conserv. 25:905-911.). One interesting case relevant to the Amazon Forest was the publication of the book “Butterflies of Southern Amazonia: A Photographic Checklist of Common Species” (Garwood & Lehman 2007GARWOOD, K., LEHMAN, R., CARTER, W. & CARTER, G. 2007. Butterflies of Southern Amazonia. A Photographic Checklist of Common Species. McAllen, Edition RiCalé Publishing, McAllen.), which compiled images of live butterflies representing some 2000 species, recorded by several butterfly watchers and ecotourists, especially in Amazonian lodges and ecotourism centers across Peru, Bolivia, and Brazil. This publication included several images taken at Cristalino Lodge, in Alta Floresta, Mato Grosso state, Brazil, information that has already been used in studies of the state of knowledge of butterflies in Brazil (Santos et al. 2008SANTOS, E.C., MIELKE, O.H.H. & CASAGRANDE, M.M. 2008. Butterfly inventories in Brazil: the state of the art and the priority-areas model for research aiming at conservation. Nat. Conserv. 6(2):176-198., Queiroz-Santos et al. 2016QUEIROZ-SANTOS, L., DIAS, F.M.S., DELL’ERBA, R., CASAGRANDE, M.M. & MIELKE, O.H.H. 2016. Assessment of the current state of biodiversity data for butterflies and skippers in the state of Mato Grosso, Brazil (Lepidoptera, Papilionoidea and Hesperioidea). ZooKeys 595:147-161., Shirai et al. 2019SHIRAI, L.T., MACHADO, P A., MOTA, L.L., ROSA, A.H.B. & FREITAS, A.V.L. 2019. DnB, the Database of Nymphalids in Brazil, with a Checklist for Standardized Species Lists. J. Lepid. Soc. 73(2):93-108.). Photographic records have continued to be made in this location ever since; furthermore, the region has been equally attractive to researchers, and the focus of several expeditions by the authors of this paper, which have resulted in the description of a Satyrini genus (Freitas et al. 2019FREITAS, A.V.L., MOTA, L.L., ZACCA, T. & BARBOSA, E.P. 2019. Description of a new and highly distinctive genus and species of Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) from the Brazilian southern Amazon. Rev. Bras. Entomol. 63:254-261.), a new subspecies of ithomiine (Mota et al. 2022MOTA, L.L., ROSA, A.H.B., VASCONCELLOS, L.R., WILLMOTT, K.T. & FREITAS, A.V.L. 2022. A new subspecies of Mechanitis lysimnia from southern Amazonia (Nymphalidae:Danainae: Ithomiini). Trop. Lepid. Res. 32(1):47-51.), descriptions of immature stages (Freitas & Brown 2002FREITAS, A.V.L. & BROWN JR, K.S. 2002. Immature stages of Sais rosalia (Nymphalidae, Ithomiinae). J. Lepid. Soc. 56(2):104-106., 2008FREITAS, A.V.L. & BROWN JR, K.S. 2008. Immature stages of Vila emilia (Lepidoptera: Nymphalidae, Biblidinae). Trop. Lepid. Res. 18(2):74-77., Mota et al. 2020MOTA, L.L., KAMINSKI, L.A. & FREITAS, A.V.L. 2020. The tortoise caterpillar: carnivory and armoured larval morphology of the metalmark butterfly Pachythone xanthe (Lepidoptera: Riodinidae). J. Nat. Hist. 54(5-6):309-319.), and research on butterfly communities and mimicry (Mota et al., in preparation). Here, we present a butterfly list for the Cristalino Lodge based on all data collected during field expeditions and the records made by butterfly watchers and ecotourists.

Materials and Methods

1. Study site

The Cristalino Lodge (centered at 9°35’51’’S, 55°55’52’’W) is located in northern Mato Grosso State, in the municipality of Alta Floresta, central Brazil (Figure 1). The climate in the region is warm and humid, with average annual temperature of 24°C, annual rainfall above 2400 mm, with a marked dry season lasting from 3 to 5 months (Nimer 1989NIMER, E. 1989. Clima. In Geografia do Brasil Vol. 1. Região Centro-Oeste (A.C. Duarte, ed.). IBGE, Rio de Janeiro, p.23-34.). Soils are mostly red-yellow latosols and altitudes vary from 100 m to 400 m at the top of small rocky outcrops (locally known as “serras”) (Sazaki & Farias 2008SAZAKI, D. & FARIAS, R.A, coords. 2008. Plano de Manejo das Reservas Particulares do Patrimônio Natural Cristalino I, II e III, (Novo Mundo, Mato Grosso – Brasil). Fundação Ecológica Cristalino, Alta Floresta. Available at http://www.fundacaocristalino.org.br/sobre-a-fundacao/relatorios-e-documentos/
http://www.fundacaocristalino.org.br/sob...
, Müller & Farias 2010MÜLLER, M.V.Y. & FARIAS, R.A, coords. 2010. Reserva particular do patrimônio natural lote cristalino – Plano de manejo. Fundação Ecológica Cristalino, Alta Floresta. Available at http://www.fundacaocristalino.org.br/sobre-a-fundacao/relatorios-e-documentos/
http://www.fundacaocristalino.org.br/sob...
). The region is in the southern part of the Amazon Forest, and the vegetation is heterogeneous, presenting various phytophysiognomies (Figure 2 A-D) including evergreen (Figure 2 A,B), igapó (floodplain), bamboo, semi-deciduous and deciduous forests (the latter usually associated with patches of rocky outcrops in the “serras”) (Figure 2 D). Despite the proximity to the Cerrado savannas, these are not represented in the region; the open vegetation types in this area are of a different origin (Zappi et al. 2011ZAPPI, D.C., SASAKI, D., MILLIKEN, W., IVA, J., HENICKA, G.S., BIGGS, N. & FRISBY, S. 2011. Plantas vasculares da região do Parque Estadual Cristalino, norte de Mato Grosso, Brasil. Acta Amazon. 41(1):29-38.). The region is situated in the so-called “arch of deforestation” and has undergone great land-use change related to goldmining, agriculture, and cattle ranching since the foundation of Alta Floresta in 1976 (Dubreuil et al. 2012DUBREUIL, V., DEBORTOLI, N., FUNATSU, B., NÉDÉLEC, V. & DURIEUX, L. 2012. Impact of land-cover change in the Southern Amazonia climate: a case study for the region of Alta Floresta, Mato Grosso, Brazil. Environ. Monit. Assess. 184(2):877-891.).

Figure 1.
Map showing the location of Cristalino Lodge within the Brazilian Amazon Forest.
Figure 2.
Environments and butterflies of Cristalino Lodge. A) View of evergreen forest from a 50 m. observation tower; B) Interior view of evergreen forest; C) Phoebis spp. puddling near the Cristalino River; D) View of deciduous forest during the dry season (~June-September); E-G) Examples of butterfly species that have been recorded in Cristalino Lodge through pictures only. E) Arcas tuneta (Lycaenidae), picture by Sidnei M. Dantas; F) Argyrogrammana glaucopis (Riodinidae), picture by Stephen J. Boddington; G) Hypothyris leprieuri ninyas (Nymphalidae), picture by Richard C. Hoyer; H) Eurytides callias (Papilionidae), picture by Kim Garwood; I) Cyclosemia sp. (Hesperiidae), picture by Will Carter; J) Dismorphia amphione (Pieridae), picture by Gill Carter; K) Undescribed Lycaenidae (tentatively identified as Arumecla sp.), picture by Sidnei M. Dantas.

Cristalino Lodge was created in 1992 and has attracted ecotourists, photographers, and bird and butterfly watchers ever since. It is associated with an ecological foundation (Cristalino Ecological Foundation, CEF) and four contiguous private reserves (Reservas Particulares do Patrimônio Natural) that surround it, located in the municipalities of Alta Floresta and Novo Mundo. The lodge was named after the black waters of the Cristalino river (Figure 2 C), that crosses the area of the private reserves and is a tributary of the larger Teles Pires river, which delimits the reserves to the south. While most of the forest south of Cristalino Lodge is fragmented (Lees & Peres 2006LEES, A.C. & PERES, C.A. 2006. Rapid avifaunal collapse along the Amazonian deforestation frontier. Biol. Conserv. 133(2):198-211.), the 72 km2 of the Cristalino private reserves are contiguous to the Cristalino State Parks I and II (1849 km2), which are also contiguous to other large conservation areas in the state of Pará. However, it is important to emphasize that Cristalino State Park II currently has its existence under legal dispute and suffers from deforestation and fires (https://g1.globo.com/mt/mato-grosso/noticia/2022/08/17/incendio-no-parque-do-cristalino-ii-em-mt-pode-ter-sido-causado-por-aeronave-diz-delegado.ghtml). Here, we consider as “Cristalino Lodge” the areas of the lodge itself, the four private reserves, the margins of the Cristalino river adjacent to the RPPNs, the Ariosto Island and the forest area located at the southern margin of the Teles Pires river, adjacent to the reserves, where visitors board the boats to access the lodge. These all form an area of forest that, apart from the rivers, is continuous and have a trail system that is explored by tourists that visit Cristalino Lodge.

2. Field inventory

Butterfly sampling was carried out during expeditions of 7–15 days between June and September (during the dry season, when butterflies are apparently more diverse and abundant in the region) in 2000 (twice), 2017 and 2018, and in a longer period between September 2015 and September 2016, with few temporal gaps, as part of a study that was not designed for inventorying species. Most collecting was made through active searching with entomological nets. Additionally, a few Van Someren-Rydon traps baited with banana fermented with beer and installed in the understory were used in the earlier expeditions, in addition to the Ahrenholz technique in 2018, which consists of attaching paper soaked in saliva on leaves in the understory, to attract mostly Hesperiidae (Lamas et al. 1993LAMAS, G., MIELKE, O.H.H. & ROBBINS, R.K. 1993. The Ahrenholtz technique for attracting tropical skippers (Hesperiidae). J. Lepid. Soc. 47(1):80-82.). Collected butterfly specimens were stored in a freezer, and at least one of each morphospecies was spread and deposited in the entomological collection of the Museu de Diversidade Biológica, Universidade Estadual de Campinas (Unicamp), Campinas, São Paulo, Brazil.

3. Image searching

To examine butterfly images for additional species from the region, we intensively searched a number of sources, including websites and books. We focused on the images that could add new records to the list, with a search process in two phases. Firstly, we conducted an initial rapid assessment in which pictures of species that are easy to identify and that had already been recorded were ignored, and separated out other images for further examination. In the second phase, selected images were checked as to their photographer and provenance, to confirm whether they had actually been taken at Cristalino Lodge, and reviewed for potential new taxonomic records. The images selected in the second phase were subsequently sent for identification by specialists and the authors of this paper. Not all pictures could be reliably identified to species level (even if the source suggested an identification), either due to poor image quality or because the specimen belonged to a group which requires dissection or closer inspection for identification. We thus ignored any pictures which the specialists were unable to confirm as a new taxon (e.g., species group, genus or tribe) for Cristalino. We only used photographic records; trip reports and other written records were ignored if not associated with images that could be checked, even if those records were made by knowledgeable people and might be reliable.

The sources and specific searching methods, following the two-phase approach described above, were as follows: We checked every record in the books “Butterflies of Southern Amazonia” (Garwood & Lehman 2007GARWOOD, K., LEHMAN, R., CARTER, W. & CARTER, G. 2007. Butterflies of Southern Amazonia. A Photographic Checklist of Common Species. McAllen, Edition RiCalé Publishing, McAllen.), “Borboletas do Brasil (three volumes)” (Palo jr. 2017PALO JR., H. 2017. Borboletas do Brasil – 3 volumes. Vento Verde, São Carlos.) and “Lepidoptera: Borboletas e Mariposas do Brasil” (Almeida & Freitas 2012ALMEIDA, A.C. & FREITAS, A.V.L. 2012. Lepidoptera. Borboletas e mariposas do Brasil. Exclusiva Publicações Ltda., São Paulo.). The first contains several pictures from Cristalino Lodge, identified by the initials “CL”. We used the online search platforms Google Search and Google Images, where all combinations of the keywords “butterflies”, “butterfly”, “borboletas”, “borboleta” or “lepidoptera” with “Cristalino”, “Cristalino Lodge” or “Alta Floresta” were used. At Google Search, we visited all sites and blogs in the first ten pages of results for each keyword combination; at Google Images, we checked every picture retrieved for every combination.

We also searched in specific websites and social media sites that specialize in pictures and/or butterflies where there was a reasonable likelihood of finding new records. In Flickr’s search tool, we used the same combinations of keywords cited above, and checked all results (https://www.flickr.com). At Instagram (https://www.instagram.com), we searched for images of butterflies among every public picture with the hashtag “#cristalinolodge”. At Tolweb (http://tolweb.org), we used “Cristalino Lodge” in the search resource, and checked all the pages about butterfly taxa shown in the results. At Borboletas e Mariposas (http://borboletaskmariposas.blogspot.com), we used “Cristalino” in the search resource and checked all the results. At Calydna database (https://calydna.com), we manually found the Cristalino region in the map present in the site, clicked at one of the records from the area, and then clicked in the location name (“Cristalino Jungle Lodge”) beyond the taxon name; this led to a page with all records made at Cristalino Lodge, and we checked each one. We searched manually among the live specimen records at Butterflies of America (Warren et al. 2016WARREN, A.D., DAVIS, K.J., STANGELAND, E.M., PELHAM, J.P., WILLMOTT, K.R. & GRISHIN, N.V. 2016. Illustrated Lists of American Butterflies. Available at http://www.butterfliesofamerica.com/ (last access on 16/06/2020)
http://www.butterfliesofamerica.com/...
), and checked every picture at the site Neotropical Butterflies (https://www.neotropicalbutterflies.com), which includes many of the same records of Butterflies of Southern Amazonia, and the “Butterflies of the Amazon and Andes” section of the site Learn about Butterflies (https://www.learnaboutbutterflies.com). The website Butterfly Catalogs (https://www.butterflycatalogs.com) provides a useful guide and checklist of the butterflies of Cristalino Lodge (Garwood & Jaramillo V. 2021GARWOOD, K. & JARAMILLO, V.J.G. 2021. Guide & Checklist of Butterflies – Cristalino Lodge. Available at https://www.butterflycatalogs.com/brazil.html (last access on 30/09/2022).
https://www.butterflycatalogs.com/brazil...
), but it was not used here because the locality of each picture is given only as country. However, it includes many pictures that are also available in other sources, with finer locality data, and could therefore be used.

We made a special effort to compile and examine records submitted to iNaturalist (www.inaturalist.org). To more easily find records of interest, we created the project “Butterflies of Cristalino Lodge” in June 2019. In this kind of project, iNaturalist automatically adds all the pictures of the selected taxa (in this case, “butterflies”) from a given locality. For this, we created in iNaturalist a locality named “Cristalino Lodge” that consists of a polygon which encompasses and slightly surpasses our area of interest (to account for imprecisions in the record locations given by the users).

The search for pictures was made in June of 2020, and the statistics of iNaturalist are from January 2022, about two years and a half after the creation of the project. Additionally, we checked pictures from the Cristalino Lodge archives and the images made by the first author during fieldwork (which were not added to iNaturalist before the submission of this work, to separate them from the citizen science records).

4. Identification and taxonomy

Collected specimens and pictures of live butterflies selected in the second phase of the image search were identified by specialists and the authors of this study. Although the live specimen images are usually identified at their sources, and frequently by knowledgeable people, all the images were sent to specialists and, thus, the identifications provided in the species list might differ from those at the original source. Apart from a few records available upon request to the first author, all the photographic records are published in books or on the internet and therefore can be checked, updated, or disputed. Information on the identification, photographers and photography sources of each taxon is available as supplementary material (Table S1).

We follow Heikkilä et al. (2012)HEIKKILÄ, M., KAILA, L., MUTANEN, M., PEÑA, C. & WAHLBERG, N. 2012. Cretaceous origin and repeated tertiary diversification of the redefined butterflies. Proc. R. Soc. B. 279(1731):1093-1099. for Papilionoidea, and the taxonomy of butterflies follows mostly Lamas (2004)LAMAS, G. 2004. Checklist: Part 4A. Hesperioidea – Papilionoidea. In Atlas of Neotropical Lepidoptera (J.B. Heppner, ed). Scientific Publishers, Gainesville 439 p., updated after Wahlberg et al. (2009)WAHLBERG, N., LENEVEU, J., KODANDARAMAIAH, U., PEÑA, C., NYLIN, S., FREITAS, A.V.L. & BROWER, A.V.Z. 2009. Nymphalid butterflies diversify following near demise at the Cretaceous/Tertiary boundary. P. R. Soc. B. 276(1677):4295-4302. for higher classification of Nymphalidae, (Tyler et al. (1994)TYLER, H.A., BROWN JR., K.S. & WILSON, K.H. 1994. Swallowtail butterflies of the Americas: a study in biological dynamics, ecological diversity, biosystematics, and conservation. Scientific Publishers, Gainesville. for Papilionidae, the Riodinidae Species Checklist (Seraphim 2019SERAPHIM, N. 2019. Riodinidae Species Checklist: a preliminary species checklist for the Riodinidae. Available at https://www2.ib.unicamp.br/labor/site/?page_id=805 (last access on 21/01/2022)
https://www2.ib.unicamp.br/labor/site/?p...
) and (Zhang et al. (2021)ZHANG J., CONG Q., SHEN J., OPLER, P.A. & GRISHIN, N.V. 2021. Genomics-guided refinement of butterfly taxonomy. Tax. Report Int. Lep. Surv. 9(3):1-112. for Riodinidae, Robbins (2004)ROBBINS, R.K. 2004. Lycaenidae. Theclinae. Tribe Eumaeini. In Checklist: Part 4A. Hesperioidea - Papilionoidea. (G. Lamas, ed.). In Atlas of Neotropical Lepidoptera. Volume 5A (J.B. Heppner, ed.). Scientific Publishers. Gainesville, p.118-137. and subsequent publications for Lycaenidae, the Euptychiina Species Checklist (Zacca et al. 2018ZACCA, T., BARBOSA, E.P. & FREITAS, A.V.L. 2018. Euptychiina Species Checklist. Available at https://www2.ib.unicamp.br/labor/site/?page_id=1020 (last access on 21/01/2022)
https://www2.ib.unicamp.br/labor/site/?p...
) for Euptychiina, Murillo-Ramos et al. (2018)MURILLO-RAMOS, L., TORRES, R.H., NÚÑEZ, R. & AYAZO, R. 2018. New insights on the taxonomy and phylogenetic relationships of the Neotropical genus Phoebis (Pieridae: Coliadinae) revealed by molecular and morphological data. Zootaxa 4457(1):179-188. for Phoebis, (Penz et al. (2017)PENZ, C.M., CASAGRANDE, M.M., DEVRIES, P. & SIMONSEN, T.J. 2017. Documenting diversity in the Amazonian butterfly genus Bia (Lepidoptera, Nymphalidae). Zootaxa 4258(3):201-237. for Bia, Penz (2021)PENZ, C.M. 2021. Revised species definitions and nomenclature of the blue and purple/rose Cithaerias butterflies (Lepidoptera, Nymphalidae, Satyrinae). Zootaxa 4963(2):293-316. for Cithaerias, Paluch (2006)PALUCH, M. 2006. Revisão das espécies de Actinote Hübner, [1819] (Lepidoptera, Nymphalidae, Heliconiinae, Acraeini). Tese de doutorado, Universidade Federal do Paraná, Curitiba. for Actinote and (Núñez et al. (2021)NÚÑEZ, R., WILLMOTT, K.R., ÁLVAREZ, Y., GENARO, J.A., PÉREZ‐ASSO, A.R., QUEJERETA, M., TURNER, T., MILLER, J.Y., BRÉVIGNON, C., LAMAS, G. & HAUSMANN, A. 2021. Integrative taxonomy clarifies species limits in the hitherto monotypic passion‐vine butterfly genera Agraulis and Dryas (Lepidoptera, Nymphalidae, Heliconiinae). Syst. Entomol. 1-27. for Agraulis and Dryas. Eurema furtadoi Casagrande & Mielke, 1979, synonymized with Eurema lirina (H. Bates, 1861) by Lamas (2004)LAMAS, G. 2004. Checklist: Part 4A. Hesperioidea – Papilionoidea. In Atlas of Neotropical Lepidoptera (J.B. Heppner, ed). Scientific Publishers, Gainesville 439 p., is tentatively used for a specimen different from another that is morphologically similar to the type of Eurema lirina. We follow the higher classification of Hesperiidae summarized by Zhang et al. (2019a)ZHANG J., CONG Q., SHEN J., BROCKMANN E. & GRISHIN, N.V. 2019a. Three new subfamilies of skipper butterflies (Lepidoptera, Hesperiidae). Zookeys 861:91-105., and the taxonomy of the group follows Mielke (2005)MIELKE O.H.H. 2005. Catalogue of the American Hesperioidea: Hesperiidae (Lepidoptera). Sociedade Brasileira de Zoologia; Curitiba, Paraná, Brazil. xiii + 1536 p. with recent updates (Cong et al. 2019CONG Q., ZHANG J., SHEN J. & GRISHIN, N.V. 2019. Fifty new genera of Hesperiidae (Lepidoptera). Insecta Mundi 0731:1-56., Li et al. 2019LI, W., CONG Q., SHEN J., ZHANG J., HALLWACHS W., JANZEN D.H. & GRISHIN, N.V. 2019. Genomes of skipper butterflies reveal extensive convergence of wing patterns. Proc. Nat. Acad. Scienc. Unit. Stat. Amer. 116(13):6232-6237., Medeiros et al. 2019MEDEIROS A.D., DOLIBAINA D.R., CARNEIRO E. & MIELKE, O.H.H., CASAGRANDE M.M. 2019. Taxonomic revision of Artines Godman, 1901 (Hesperiidae: Hesperiinae: Moncini) with the description of nine new species. Zootaxa 4614(1):1-49., 2020MEDEIROS A.D., DOLIBAINA D.R., CARNEIRO E. & MIELKE, O.H.H., CASAGRANDE M.M. 2019. Taxonomic revision of Panca Evans, 1955 (Hesperiidae: Hesperiinae: Moncini) with the description of two new species. Zootaxa 4830(3):501-543., Zhang et al. 2019bZHANG J., CONG Q., SHEN J., BROCKMANN E. & GRISHIN, N.V. 2019b. Genomes reveal drastic and recurrent phenotypic divergence in firetip skipper butterflies (Hesperiidae: Pyrrhopyginae). Proc. R. Soc. B: Biol. Sci. 286(1903):20190609., cZHANG J., CONG Q., SHEN J., OPLER P.A. & GRISHIN, N.V. 2019c. Changes to North American butterfly names. Tax. Report Int. Lep. Surv. 8(2):1-11., 2022ZHANG J., CONG Q., SHEN J. & GRISHIN, N.V. 2022. Taxonomic changes suggested by the genomic analysis of Hesperiidae (Lepidoptera). Insecta Mundi. 921:1-135., Siewert et al. 2020SIEWERT, R.R., MIELKE O.H.H. & CASAGRANDE, M.M. 2020. Taxonomic revision of the Neotropical genus Telemiades Hübner, [1819] (Lepidoptera: Hesperiidae: Eudaminae), with descriptions of fourteen new species. Zootaxa 4721(1):1-111., 2022SIEWERT, R.R., LEMES, J.R.A., MIELKE O.H.H. & CASAGRANDE, M.M. 2022. Taxonomic revision of the Neotropical Augiades Hübner, [1819] (Lepidoptera: Hesperiidae). Zootaxa 5105(2):237-252.).

5. Species richness estimates

Beccaloni & Gaston (1995)BECCALONI, G.W. & GASTON, K.J. 1995. Predicting the species richness of Neotropical forest butterflies: Ithomiinae (Lepidoptera: Nymphalidae) as indicators. Biol. Conserv. 71(1):77-86. suggest that the nymphalid tribe Ithomiini is a good surrogate of the total butterfly fauna of neotropical forests, since this group is easy to sample and represent 4.3–4.6% of the butterfly species. Brown & Freitas (2000)BROWN JR, K.S. & FREITAS, A.V.L. 2000. Atlantic Forest butterflies: indicators for landscape conservation. Biotropica 32(4b):934-956. indicates that the Nymphalidae fauna of a well sampled site represents 25–29% of the total butterfly community. Therefore, the numbers of recorded species of Nymphalidae and Ithomiini were both used to estimate the total butterfly species richness of Cristalino Lodge.

Results

We collected approximately 2500 specimens and searched for new records among thousands of images, whose number cannot be quantified because of our searching methods and the presence of many images that were repeated in more than one source and frequently cropped, inverted or with different identifications. As an example, the search for “butterfly” plus “Cristalino” at Flickr resulted in 782 images, and there were 157 images of butterflies among 4290 images tagged with “#cristalinolodge” at Instagram. About two years and a half after being created, the project “butterflies of Cristalino Lodge” in iNaturalist reported in its statistics a total of 3398 observations (specimens recorded), 839 species, 168 identifiers, and 59 observers (photographers). These numbers have continued to grow. Although not all images were labeled with correct species names or even could lead to a precise identification, these numbers give a good estimate of the scope of the project.

Combining information from collected specimens and photographic records, a total of 1010 species (1012 taxa, including subspecies), including Hedylidae and all butterfly families, were recorded at Cristalino Lodge (Table 1). The most represented family was Hesperiidae with 314 species, followed by Nymphalidae (301), Riodinidae (221), Lycaenidae (123), Papilionidae (24), Pieridae (23) and Hedylidae (4). The two species that had more than one recorded subspecies were the nymphalids Heliconius numata (Cramer, 1780) and Memphis acidalia (Hübner, [1819]).

Table 1.
List of the butterflies and moth-butterflies (Papilionoidea) of Cristalino Lodge. Total number: 1010 species. The number of species of each major taxa is provided within parenthesis. * Species recorded only through live specimen photographs; ** including or restricted to images made by the 5 photographers with the most records.

A total of 351 species, representing 34.7% of all species, were recorded only through photographs (examples in Figure 2 E-K). Such records contributed with at least one quarter of each family. They were particularly important to the Lycaenidae, representing more than half of its species (52,8%) and to the Hesperiidae (41,1% of the species). A total of 318 of the species with photographic records only were recorded by 5 photographers (but not necessarily only them), who are either expert butterfly watchers and/or expedition guides: SMD (155), RCH (109), GC (74), SJB (57) and WC (50).

The total richness of butterflies in the region was estimated to be from 1038 to 1204 species when the number of recorded Nymphalidae was used as a predictor, and from 652 to 698 species when the group used was Ithomiini.

Discussion

This study is one of the few to provide an extensive list of the butterflies of a Brazilian Amazon Forest locality, and the first in Brazil to surpass 1000 species. This results from the combined efforts of many researchers and citizen scientists, over more than two decades, to document the butterfly fauna of a diverse region. The 1010 recorded species and the estimates for the total number of species present in the area (see below) represent between one quarter and one third of the 3522 butterfly species (including 23 Hedylidae) known to occur in Brazil (Casagrande 2022CASAGRANDE, M.M. 2022. Lepidoptera. In Catálogo Taxonômico da Fauna do Brasil. PNUD. Available at http://fauna.jbrj.gov.br/fauna/faunadobrasil/84 (last access on 21/01/2022)
http://fauna.jbrj.gov.br/fauna/faunadobr...
), a proportion similar to that of the well-known avifauna of the region (Lees et al. 2013LEES, A.C., ZIMMER, K.J., MARANTZ, C.A., WHITTAKER, A., DAVIS, B.J.W. & WHITNEY, B.M. 2013. Alta Floresta revisited: an updated review of the avifauna of the most intensively surveyed locality in south-central Amazonia. Bull. Br. Ornithol. Club 133(3):178-239.). The species recorded also surpass the total diversity of butterflies of the State of Mato Grosso in the thorough assessment by Queiroz-Santos et al. (2016)QUEIROZ-SANTOS, L., DIAS, F.M.S., DELL’ERBA, R., CASAGRANDE, M.M. & MIELKE, O.H.H. 2016. Assessment of the current state of biodiversity data for butterflies and skippers in the state of Mato Grosso, Brazil (Lepidoptera, Papilionoidea and Hesperioidea). ZooKeys 595:147-161., which found a total of 901 species recorded in the State, and confirms their suggestion of the need for intensive inventories of its northernmost, Amazonian portion. For two families, Hesperiidae and Lycaenidae, we recorded more species than were represented in the previous list from the whole of Mato Grosso, with a remarkable 314 species at Cristalino compared with 148 species from Mato Grosso for Hesperiidae, and 123 versus 77 for Lycaenidae. These two families were precisely the ones that Queiroz-Santos et al. (2016)QUEIROZ-SANTOS, L., DIAS, F.M.S., DELL’ERBA, R., CASAGRANDE, M.M. & MIELKE, O.H.H. 2016. Assessment of the current state of biodiversity data for butterflies and skippers in the state of Mato Grosso, Brazil (Lepidoptera, Papilionoidea and Hesperioidea). ZooKeys 595:147-161. expected to be the most underrepresented in their study. A quick and conservative look through their database, considering unknown subspecies or other ambiguities in both lists as representing the same taxa, reveals that the Cristalino Lodge list adds more than 360 species to the previously reported State total. As expected, the present list is responsible for an important extension in the known distribution of several species (examples in Figure 3).

Figure 3.
Distribution map for some butterfly species with notable range extensions documented at Cristalino Lodge (arrows).

Amazonian butterfly communities are known to have high turnover rates and a high proportion of species that are rare and hard to detect; therefore, high sampling effort and long-term sampling, spanning several years, are required to produce representative inventories (Brown & Hutchings 1997BROWN JR, K.S. & HUTCHINGS, R.W. 1997. Disturbance, Fragmentation, and the Dynamics of Diversity in Amazonian Forest Butterflies. In Tropical Forest Remnants. Ecology, Management, and Conservation of Fragmented Communities (W.F. Laurance & R.O. Bierregaard, Jr., eds). The University of Chicago Press, Chicago, p.91-110., Mielke et al. 2010MIELKE, O.H.H., CARNEIRO, E. & CASAGRANDE, M.M. 2010. Lepidopterofauna (Papilionoidea e Hesperioidea) do Parque Estadual do Chandless e arredores, Acre, Brasil. Biota Neotrop. 10(4):285-299. https://doi.org/10.1590/S1676-06032010000400033
https://doi.org/10.1590/S1676-0603201000...
, Lamas et al. 2021LAMAS, G., McINNIS, M.L., BUSBY, R.C. & ROBBINS, R.K. 2021. The lycaenid butterfly fauna (Lepidoptera) of Cosñipata, Peru: annotated checklist, elevational patterns, and rarity. Insecta Mundi 0861:1-34.). Considering that the sampling effort at Cristalino Lodge has been relatively high and includes not only collected specimens but also images made through more than fifteen years by several citizen scientists, covering different trails, vegetation types and in both dry and wet seasons, this list can be regarded as relatively complete for an Amazonian butterfly fauna. However, for the reasons already mentioned, we still expect many future additions to the list, especially among the Hesperiidae, Riodinidae and Lycaenidae, and that is supported by the fact that several new photographic species records have been made after the first assessment through the iNaturalist project, mostly of rare, small riodinids and lycaenids. Also, in Neotropical forests, the family Hesperiidae is typically found to be the richest at every site with nearly complete lists, while the Nymphalidae is usually the richest in sites with less complete lists because the latter are easier to collect and identify (Brown & Freitas 2002BROWN JR, K.S. & FREITAS, A.V.L. 2002. Diversidade Biológica no Alto Juruá: avaliação, causas e manutenção. In Enciclopedia da Floresta – O Alto Juruá: práticas e conhecimento das populações (M.M.C. Cunha & M.B. Almeida, org.). Companhia das Letras, São Paulo, p.33-42., Francini et al. 2011FRANCINI, R.B., DUARTE, M., MIELKE, O.H.H., CALDAS, A. & FREITAS, A.V.L. 2011. Butterflies (Lepidoptera, Papilionoidea and Hesperioidea) of the “Baixada Santista” region, coastal São Paulo, southeastern Brazil. Rev. Bras. Entomol. 55(1):55-68.). In our study, these two families have a rather equivalent richness, which indicates that there are still likely a number of Hesperiidae species in the region that have gone undetected, probably mostly among the fast-flying canopy species. Future collecting in the region should therefore focus on Hesperiidae and the use of the Ahrenholz method.

The total species richness estimates were substantially different according to the taxonomic group used as a predictor. The number of recorded Nymphalidae suggested that there are from 1038 to 1204 butterfly species at Cristalino Lodge, and that we should still expect something between 30 to 200 additional species. However, using the number of Ithomiini, the total species richness would be from 652 to 698 species, which is considerably lower than the actual number of species already recorded. This result does not seem to be linked to undersampling of this group, which is well-known for being locally abundant and easy to detect, collect and photograph. As an example, with a lower sampling effort, (Mielke et al. (2010)MIELKE, O.H.H., CARNEIRO, E. & CASAGRANDE, M.M. 2010. Lepidopterofauna (Papilionoidea e Hesperioidea) do Parque Estadual do Chandless e arredores, Acre, Brasil. Biota Neotrop. 10(4):285-299. https://doi.org/10.1590/S1676-06032010000400033
https://doi.org/10.1590/S1676-0603201000...
found 35 Ithomiini species at Chandless State Park, Acre, Brazil and KSB and AVLF recorded more than 70 species of Ithomiini in a two day census in a locality in the upper Juruá river, Acre, Brazil (unpublished data). Instead, the Cristalino fauna seems to be particularly poor in its proportion of ithomiines, with only 30 species known, a mere 3% of the total recorded butterfly richness. This is in accordance with Brown & Freitas (2000)BROWN JR, K.S. & FREITAS, A.V.L. 2000. Atlantic Forest butterflies: indicators for landscape conservation. Biotropica 32(4b):934-956., who indicated that the proportion of Ithomiini presents a great variance, ranging from 2% to 6% of the total butterfly species richness in the Atlantic Forest, and reaching a maximum of 8% in the east Andean slopes. This result suggests that the tribe Ithomiini is not necessarily a good surrogate of butterfly species richness in neotropical forests, and calls attention to the importance of considering the characteristics of each region’s fauna in terms of using a taxon or guild for this kind of estimate. Since the Ithomiini is a tribe of Nymphalidae it is possible that other nymphalid groups are under-represented in comparison with other regions, but it seems clear that using Nymphalidae to estimate overall diversity is likely to be more precise. It may thus be assumed that we have recorded at least 80% of the butterfly species of Cristalino. Although this estimate should be used carefully, we believe it is safe to consider this list as a good illustration of the diversity and distribution patterns of this region (the small representation of Ithomiini being an example), and to compare it to other areas.

Relative to the other tropical forest biome in Brazil, the Atlantic Forest, Cristalino Lodge presents a higher number of species than the richest localities (Brown & Freitas 2000BROWN JR, K.S. & FREITAS, A.V.L. 2000. Atlantic Forest butterflies: indicators for landscape conservation. Biotropica 32(4b):934-956., Dolibaina et al. 2010, Francini et al. 2011FRANCINI, R.B., DUARTE, M., MIELKE, O.H.H., CALDAS, A. & FREITAS, A.V.L. 2011. Butterflies (Lepidoptera, Papilionoidea and Hesperioidea) of the “Baixada Santista” region, coastal São Paulo, southeastern Brazil. Rev. Bras. Entomol. 55(1):55-68.). As for the Amazon Forest, it is not as rich as areas in western Amazonia, such as Tambopata and Pakitza in Peru or Cacaulândia and Marechal Thaumaturgo in the Brazilian states of Rondônia and Acre (Lamas 1985LAMAS, G. 1985. Los Papilionoidea (Lepidoptera) de la zona reservada de Tambopata, Madre de Dios, Perú. I. Papilionidae, Pieridae y Nymphalidae (en parte). Rev. Per. Ent. 27:59-73., Robbins et al. 1996ROBBINS, R.K., LAMAS, G., MIELKE, O.H.H., HARVEY, D.J. & CASAGRANDE, M.M. 1996. Taxonomic composition and ecological structure of the species-rich butterfly community at Pakitza, Parque Nacional del Manu, Perú. In Manu. The Biodiversity of Southeastern Peru. La Biodiversidad del Sureste del Perú (D.E. Wilson & A. Sandoval, eds). Editorial Horizonte, Lima. p.217-252., Brown & Freitas 2002BROWN JR, K.S. & FREITAS, A.V.L. 2002. Diversidade Biológica no Alto Juruá: avaliação, causas e manutenção. In Enciclopedia da Floresta – O Alto Juruá: práticas e conhecimento das populações (M.M.C. Cunha & M.B. Almeida, org.). Companhia das Letras, São Paulo, p.33-42., respectively, see also Brown 2005BROWN JR, K.S. 2005. Geologic, evolutionary, and ecological bases of the diversification of neotropical butterflies: implications for conservation. In Tropical rainforests: past, present and future (E. Bermingham, C.W. Dick & C. Moritz, eds). The University of Chicago Press, Chicago, p.166-201. for other equally rich localities in western Amazonia). Therefore, although the present butterfly inventory is currently the richest for a locality in Brazil, it is expected that it will be surpassed when lists of sufficiently sampled regions in the Brazilian western Amazonia are published. At the same time, the region of Manaus, in central Amazonia, is known to be less rich, with about 800 estimated species (Brown 1984BROWN JR, K.S. 1984. Species diversity and abundance in Jaru, Rondonia (Brazil). News Lepid. Soc. 3:45-47.). Factors such as soil richness, proximity to the Andes and environmental heterogeneity have been proposed as important to determine the butterfly richness of Amazonian localities (Brown 1984BROWN JR, K.S. 1984. Species diversity and abundance in Jaru, Rondonia (Brazil). News Lepid. Soc. 3:45-47.). The Cristalino region has poorer soils than rich areas in Acre and Rondônia, and is much more distant to the Andes than Tambopata and even the aforementioned Brazilian states, thus being less under the influence of the diverse Andean fauna. The latter factor could be especially important for the Ithomiini, since the Andes is the area where this tribe is the richest and many of its groups originated and diversified (Chazot et al. 2016CHAZOT, N., WILLMOTT, K.R., FREITAS, A.V.L., DE-SILVA, D.L., PELLENS, R. & ELIAS, M. 2016. Patterns of species, phylogenetic and mimicry diversity of clearwing butterflies in the Neotropics. In Biodiversity Conservation and Phylogenetic Systematics (R. Pellens & P. Grandcolas, eds). Springer, Cham, p.333-354., 2018CHAZOT, N., DE‐SILVA, D.L., WILLMOTT, K.R., FREITAS, A.V.L., LAMAS, G., MALLET, J., GIRALDO, C.E., URIBE, S. & ELIAS, M. 2018. Contrasting patterns of Andean diversification among three diverse clades of Neotropical clearwing butterflies. Ecol. Evol. 8(8):3965-3982.). Such an influence, however, is not completely absent: interestingly, the Andean Morpho zephyritis A. Butler, 1873, cited by Brown (1984)BROWN JR, K.S. 1984. Species diversity and abundance in Jaru, Rondonia (Brazil). News Lepid. Soc. 3:45-47. as an occasional visitor in Jaru, Rondônia, has also been recorded at Cristalino. At the same time, the great environmental heterogeneity and different vegetation types found in Cristalino could explain in part why it is a richer site than Manaus for butterflies.

The butterfly fauna found in Cristalino is mostly composed of species widely distributed in the lowland Amazon Forest, with some notable absences: for example, the widespread Amazonian genera Asterope Hübner, [1819], Panacea Godman & Salvin, 1883 and Batesia C. Felder & R. Felder, 1862 (Nymphalidae) have never been observed in the region. Conversely, the Cristalino region also harbors several species that are typical of southern biomes such as the Cerrado and the Atlantic Forest. That is the case with Arawacus tarania (Hewitson, 1868) (Lycaenidae), a species of open Cerrado vegetation, and of the newly described Splendeuptychia tupinamba Freitas, Huertas & Rosa, 2021 (Nymphalidae), found primarily in the Cerrado but also in the Atlantic Forest and some localities in southwest Amazonia (Rosa et al. 2021ROSA, A.H.B., HUERTAS, B., WILLMOTT, K.R., BARBOSA, E.P., MACHADO, P.A., MIELKE, O.H.H., CANAAN, C.H.P. & FREITAS, A.V.L. 2021. Fifty years without a name: a new species of Splendeuptychia Forster (Lepidoptera: Nymphalidae: Satyrinae). Zootaxa. 5061(1):95-114.). Another good example is the presence of Ortilia ithra (W. F. Kirby, 1900) (Nymphalidae); this species is widespread through the Atlantic Forest and in riparian forest in the Cerrado domain and the present record is the northernmost and the first in the Amazon Forest (Figure 3). In addition, the Hesperiidae Pythonides homer Evans, 1953 and Lento apta Evans, 1955 were both considered endemics of the Cerrado, usually found in riparian forests (Mielke et al. 2008MIELKE, O.H.H., EMERY, E.D.O. & PINHEIRO, C.E.G. 2008. As borboletas Hesperiidae (Lepidoptera, Hesperioidea) do Distrito Federal, Brasil. Rev. Bras. Entomol. 52(2):283-288.). However, it is unknown if these elements from the southern biomes are part of an original mixed fauna or recent invaders following the open areas created with the advance of agriculture and cattle ranching. It is likely that the presence of these species is due to the region being relatively close to the southern border of Amazonia and having patches of deciduous and semi-deciduous vegetation with influence from the Cerrado flora (Zappi et al. 2011ZAPPI, D.C., SASAKI, D., MILLIKEN, W., IVA, J., HENICKA, G.S., BIGGS, N. & FRISBY, S. 2011. Plantas vasculares da região do Parque Estadual Cristalino, norte de Mato Grosso, Brasil. Acta Amazon. 41(1):29-38.). Several other butterflies from open vegetation are widely distributed species, such as Junonia sp. and Euptoieta hegesia (Cramer, 1779), both found in the deciduous forest fragments, while many common Neotropical pierids follow the river margins, where they puddle (figure 1c). The bamboo forests have an important community of Euptychiina associated with them, probably due the use of bamboo as hostplants by many species (See et al. 2018SEE, J., NAKAHARA, S. & GALLICE, G. 2018. Immature stages of Splendeuptychia quadrina (Butler, 1869) (Lepidoptera: Nymphalidae: Satyrinae). Trop. Lepid. Res. 28(2):49-53., Freitas et al. 2019FREITAS, A.V.L., MOTA, L.L., ZACCA, T. & BARBOSA, E.P. 2019. Description of a new and highly distinctive genus and species of Euptychiina (Lepidoptera: Nymphalidae: Satyrinae) from the Brazilian southern Amazon. Rev. Bras. Entomol. 63:254-261.). The Ithomiini and their mimics reveal that the region is heavily influenced by the Tapajós center of endemism and a little by the Rondônia center, with some undescribed subspecies (Brown 1979BROWN JR, K.S. 1979. Ecologia geográfica e evolução nas florestas neotropicais. Tese de Livre Docência, Universidade Estadual de Campinas, Campinas., 1982). The list presents two cases of species with more than one recorded subspecies, the nymphalids Heliconius numata and Memphis acidalia. The first is a polymorphic species that participates in several mimicry rings and is known to have as many as seven forms in a single locality (Brown & Benson 1974BROWN JR, K.S. & BENSON, W.W. 1974. Adaptive polymorphism associated with multiple Müllerian mimicry in Heliconius numata (Lepid. Nymph.). Biotropica 6(4):205-228.). Therefore, even though the forms found at Cristalino Lodge are currently treated as subspecies, they represent the expected polymorphism found in H. numata. In contrast, the reason why two subspecies of M. acidalia have been recorded is not known, but it is possible, for instance, that the region is close to the distribution limits between them.

None of the butterflies recorded at the site is listed as endangered, which is unsurprising since the only butterfly species in the Brazilian Amazon Forest considered to be threatened is Parides klagesi (Ehrmann, 1904), which is found in a small area very distant to Cristalino (Freitas et al. 2018FREITAS, A.V.L., MARINI-FILHO, O.J., MIELKE, O.H.H., CASAGRANDE, M.M., BROWN JR, K.S., KAMINSKI, L.A., ISERHARD, C.A., RIBEIRO, D.B., DIAS, F.M., DOLIBAINA, D.R., CARNEIRO, E., UEHARA-PRADO, M., ROMANOWSKI, H.P., EMERY, E.O., ACCACIO, G.M., ROSA, A.H.B., BIZARRO, J.M.S., SILVA, A.R.M., GUIMARÃES, M.P., SILVA, N.A.P., BRAGA, L. & ALMEIDA, G. 2018. Parides klagesi (Ehrmann, 1904) In Livro Vermelho da Fauna Brasileira Ameaçada de Extinção. Volume VII – Invertebrados. ICMBio, Brasília, p.100-102.). However, it is important to emphasize that, as noted by Freitas & Marini-Filho (2011)FREITAS, A.V.L. & MARINI-FILHO, O.J. 2011. Plano de ação nacional para a conservação dos Lepidópteros. Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio), Brasília., the low numbers of Amazonian butterfly species regarded as threatened could partly result from poor knowledge about the distribution of Amazonian species. In particular, the degree to which rarer species, such as Splendeuptychia tupinamba, occupy sites within their extent of occurrence, is critical for estimating global range and population size and threat status. In addition, (Silva et al. (2005)SILVA, J.M.C., RYLANDS, A.B. & DA FONSECA, G.A.B. 2005. The fate of the Amazonian areas of endemism. Conserv. Biol. 19(3):689-694. showed that habitat loss is not homogeneous among terrestrial vertebrate centers of endemism, which somewhat correspond to those of butterflies (Brown 1979BROWN JR, K.S. 1979. Ecologia geográfica e evolução nas florestas neotropicais. Tese de Livre Docência, Universidade Estadual de Campinas, Campinas., Tyler et al. 1994TYLER, H.A., BROWN JR., K.S. & WILSON, K.H. 1994. Swallowtail butterflies of the Americas: a study in biological dynamics, ecological diversity, biosystematics, and conservation. Scientific Publishers, Gainesville., Hall & Harvey 2002HALL, J.P. & HARVEY, D.J. 2002. The phylogeography of Amazonia revisited: new evidence from riodinid butterflies. Evolution 56(7):1489-1497.). This fact, combined with the large total area of long-term degraded forests (Matricardi et al. 2020MATRICARDI, E.A.T., SKOLE, D.L., COSTA, O.B., PEDLOWSKI, M.A., SAMEK, J.H. & MIGUEL, E.P. 2020. Long-term forest degradation surpasses deforestation in the Brazilian Amazon. Science 369(6509):1378-1382.), the recent increase in deforestation of the Amazon Forest in Brazil (INPE, 2020INPE. http://www.inpe.br (last access on 15/06/2020)
http://www.inpe.br...
), and the perspective of future savannization of forest areas if certain temperature and deforestation “tipping-points” are achieved (Nobre etal. 2016NOBRE, C.A., SAMPAIO, G., BORMA, L.S., CASTILLA-RUBIO, J.C., SILVA, J.S. & CARDOSO, M. 2016. Land-use and climate change risks in the Amazon and the need of a novel sustainable development paradigm. Proc. Natl. Acad. Sci. U.S.A. 113(39):10759-10768., Sales et al. 2020SALES, L.P., GALETTI, M. & PIRES, M.M. 2020. Climate and land‐use change will lead to a faunal ‘savannization’ on tropical rainforests. Glob. Change Biol. 26(12):7036-7044.), means that Amazonian butterfly species and subspecies could already be or become endangered in the future. This is especially true if there are any butterflies endemic to the region of the arch of deforestation, which encompasses the southern Amazon border. It is clear that more inventories and distribution data on the Amazonian butterfly fauna are needed not only to better understand its diversity patterns and the factors that determine them, but also how it is responding and will respond to anthropogenic changes in the region.

Images of live butterflies available on the internet contributed an impressive proportion of the present species list (virtually one third), and were especially important for a representative inventory of Hesperiidae and Lycaenidae. Photographic records include rare and undescribed taxa, which reinforces the value of photographic data for tropical butterflies (Mesaglio et al. 2021MESAGLIO, T., SOH, A., KURNIAWIDJAJA, S. & SEXTON, C. 2021. ‘First Known Photographs of Living Specimens’: the power of iNaturalist for recording rare tropical butterflies. J. Insect. Conserv. 25:905-911.). It is important to note that the use of photographic records for butterfly species lists has limitations, since not all species can be identified based on images only, and, even for those that can, a precise identification depends also on the image quality and aspects such as the butterfly’s position. Such limitations and the necessities for the identification of each taxon are often unknown to the general public, which is probably the reason behind the presence of a great number of images labeled with wrong or uncertain identifications on the internet. It also seems possible that the identification of some key pictures (i.e., shared in many sources or in a few relevant ones) is frequently copied for records of similar looking specimens, leading to a cascade of misidentified images that could be confusing for citizen scientists. However, as noticed by Mesaglio et al. (2021)MESAGLIO, T., SOH, A., KURNIAWIDJAJA, S. & SEXTON, C. 2021. ‘First Known Photographs of Living Specimens’: the power of iNaturalist for recording rare tropical butterflies. J. Insect. Conserv. 25:905-911., the iNaturalist platform is used by many knowledgeable, professional and amateur taxonomists, who contribute with hundreds or even thousands of identifications on their groups of interest. Therefore, identifications of images available on this platform are often corrected, justified, discussed, or have comments regarding their uncertainty. For these reasons, it is extremely important that the use of photographic records for butterfly inventories, as well as other areas of research, is made with caution and the aid of specialists (which might include the ones that use iNaturalist), and that the identification methods are made clear to readers. The source of the images used should also be explicit, so identifications can be disputed or corrected in the future, in the same way as with collected specimens deposited in collections. Overall, our study shows that images can be invaluable for butterfly species lists, and, even if many of them are not identified to species-level, they at least give an idea of the characteristics of the fauna found in a certain region, and even serve as a guideline for what researchers should look for in further visits to the location. Future studies should help clarify the extent to which live-specimen images are informative for different taxonomic groups and localities.

Although ecotourists not focusing on butterfly watching generated hundreds of pictures of butterflies at Cristalino, providing important data that can be used in future studies in fields such as ecology and behavior, this huge amount of information contributed few new records (not present among the collected specimens) of butterfly species for the region. One possible reason is that tourists typically focus on big, colorful, and easy-to-photograph specimens, thus tending to record the same common or flashy species. We found that the majority of new records come from expert butterfly watchers and tour guides, who together contributed more than 300 species for the total list. This is similar to what was found by (Mesaglio et al. (2021)MESAGLIO, T., SOH, A., KURNIAWIDJAJA, S. & SEXTON, C. 2021. ‘First Known Photographs of Living Specimens’: the power of iNaturalist for recording rare tropical butterflies. J. Insect. Conserv. 25:905-911., and many of the iNaturalist users (including both photographers and identifiers) cited there also participated in the project “Butterflies of Cristalino Lodge” in this platform. Butterfly watchers and tour guides: a) are interested in high numbers of records, with an emphasis on the new and rare species; b) are familiar with specific scientific knowledge, searching for information about behavior and taxonomy in the literature, and often (but not necessarily) having a degree in environment-related areas; c) are enthusiastic about sharing their records and knowledge, including in online platforms, and communicating with researchers and other interested people; and d) accumulate thousands of hours of field experience in either one or several localities. We believe that there is huge potential for greater communication between scientists and taxon-oriented ecotourists (such as butterfly watchers) and tour guides, with their knowledge and experience being both backed up by and supporting research in creative ways. In particular, photographers are able to visit and document butterflies in many areas that are not open to researchers wishing to collect specimens because of the time or complexities in obtaining the necessary research permits, and potentially the expense to access field sites. Fortunately, butterfly taxonomy is sufficiently advanced in most groups for many images to be identified, and photographic contributions have extended even to the discovery of new species (e.g., Willmott et al. 2020WILLMOTT, K.R., LAMAS, G., HALL, J.P., MOTA, L.L. & KELL, T. 2020. The common, the rare, and the lost: Descriptions of twelve new species and three new subspecies of equatorial Ithomiini (Lepidoptera, Nymphalidae, Danainae). Trop. Lepid. Res. 30(1):1-49.).

Finally, this study lists the butterflies known from the private reserves associated with an ecolodge and an environmental foundation. Without the existence of these institutions, it is unlikely that the butterfly fauna of this region would have been the subject of so many photographers and visiting researchers. Ecotourism facilities thus can provide access to and infrastructure in areas that would be otherwise remote, giving support for citizen scientists (and, in cases such as that presented here, formal scientific researchers) to reach these areas. Responsible ecotourism initiatives therefore can link themes such as environmental education, conservation, and science, and become a basis for unusually complete and long-term occurrence data, especially for charismatic groups such as butterflies.

Acknowledgments

We thank Cristalino Lodge, Fundação Ecológica Cristalino, Vitoria da Riva, Alex da Riva and the lodge’s staff for logistical support and the excellent conservation efforts. We thank everyone who has shared pictures of butterflies of Cristalino Lodge in public platforms or published them in books. Diego Ferreira da Silva and Julia Leme Pablos helped in fieldwork. We thank the invaluable help of many researchers who provided identifications: Carla Penz (Eryphanis), Cristophe Faynel (Oenomaus), Fernando Dias (Charaxinae), James Mallet (Heliconius), Jason Hall (Riodinidae), Jorge Bizarro (Doxocopa linda), Lucas Kaminski (Riodinidae), Mario Marín (Pareuptychia), Mirna Casagrande (Narope), Neil Rosser (Heliconius), Noemy Seraphim Pereira (Riodinidae and also fieldwork), Renato Ramos (Heliconiini), Simeão Moraes (Hedylidae) and Thamara Zacca (Satyrinae). Lucas Kaminski also shared important information about his personal records. Blanca Huertas kindly shared data on the distribution of Ortilia ithra from the Tropical Andean Butterfly Diversity Project and the Natural History Museum. LLM thanks CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil) for a PhD scholarship (Finance Code 001) and Santander for a mobility scholarship (DERI nº 031/2018). DRD thanks CNPq (process 152362/2020-7) for post-doctoral fellowship. AVLF thanks CNPq (process 304291/2020-0), National Science Foundation (DEB-1256742), and USAID/U.S. National Academy of Sciences (NAS) (grant number AID-OAA-A-11-00012). This publication is part of the RedeLep ’Rede Nacional de Pesquisa e Conservação de Lepidópteros’ SISBIOTABrasil/ CNPq (563332/2010-7), and of the BIOTA-FAPESP Program (grants 2011/50225-3 and 2012/50260-6). The present study is registered at the SISGEN (ADF9450).

Supplementary Material

The following online material is available for this article:

Table S1 - Butterflies and moth-butterflies (Papilionoidea) of Cristalino Lodge recorded only through pictures. Indicates the photographers, picture sources (including links, when available), and species identifiers.

  • Ethics
    This study did not involve human beings and/or clinical trials that should be approved by one Institutional Committee.
  • Data Availability
    A MS Excel file containing information on the species recorded only through pictures including each species’ photographers, picture sources and links is available at: https://doi.org/10.48331/scielodata.SDBURK.

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Edited by

Associate Editor
Gustavo Graciolli

Publication Dates

  • Publication in this collection
    04 Nov 2022
  • Date of issue
    2022

History

  • Received
    17 May 2022
  • Accepted
    26 Sept 2022
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