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Illustrated catalogue of type specimens of Megalopodidae (Coleoptera) deposited at the Museu de Zoologia da Universidade de São Paulo

Abstract

The Museu de Zoologia da Universidade de São Paulo (MZUSP) houses an important Megalopodidae collection representing 144 species, especially from Brazil and the Neotropical fauna. The type specimens of some species have never been accessed since their original descriptions, and are thus unknown to a major part of the Megalopodidae researchers. Presented here is an illustrated catalogue of the megalopodid type specimens of 32 species deposited at MZUSP, featuring photos of habitus and labels, and complete label data of all the specimens, which originally belonged to Jacintho Guérin’s personal collection. Conflicting and inconsistent data provided in the literature and in the specimens’ labels are addressed. Taxa originally proposed as species varieties are here reaffirmed as valid, with subspecific rank. Agathomerus variansMonrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155. and Plesioagathomerus vittatusMonrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155., originally described as junior synonyms, are considered unavailable names. The subspecific epithet ngriapex is emended into Agathomerus bifasciatus nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236.. An overview of the MZUSP Megalopodidae collection is presented with a history of the arrival of Guérin’s specimens.

Keywords.
Holotype; Jacintho Guérin; Megalopodinae; Taxonomy

INTRODUCTION

Megalopodidae is a small family of Chrysome-loidea comprising over 580 species distributed worldwide, but with most of the diversity occurring in the Neotropical region (Lawrence & Ślipiński, 2014Lawrence, J.F. & Ślipiński A. 2014. 2.5 Megalopodidae Latreille, 1802, In: Leschen, R.A.B. & Beutel, R.G. (Eds.). Handbook of zoology. Coleoptera, Beetles. Volume 3: Morphology and systematics (Phytophaga). Berlin, Walter de Gruyter. p. 178-183.). Brazil is by far the most diverse country with about 150 species in 10 genera (Seeno & Wilcox, 1982Seeno, T.N. & Wilcox, J.A. 1982. Leaf beetle genera (Coleoptera: Chrysomelidae). Entomography, 1: 1-221.; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.). Despite the high diversity of species in Brazil, these numbers are expected to be underestimated due to the long-time absence of studies of the South American megalopodid fauna. After the contributions from Guérin (1943-1952Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.), Monrós (1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155., 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.) and Pic (e.g., 1948Pic, M. 1948. Sur divers Col. Phyt. de la République Argentine. Revista de la Sociedad Entomológica Argentina, 14(1-2): 51-55., 1955Pic, M. 1955. Descriptions et notes. Diversités Entomologiques, 15: 9-16.) in the decades of 1940 and 1950, no other taxonomic paper has been published about this family for the region. In addition, most of the Neotropical species are known only from their type-localities or from unclear or extensive localities (like Bolivia, Amazonia and South America) (e.g.,Pic, 1955Pic, M. 1955. Descriptions et notes. Diversités Entomologiques, 15: 9-16.). Further studies in species distribution might show broader occurrence records and provide more accurate data on species richness and diversity.

The Megalopodidae collection from the Museu de Zoologia da Universidade de São Paulo (MZUSP, São Paulo, Brazil) stands out as one the most representative of the Neotropical region, especially from Brazil and neighbouring countries. It holds about 1,200 specimens in 144 species and seven genera, and other ca. 800 specimens still pending identification to species level. Besides, the MZUSP collection includes many type specimens and the totality or parts of important private collections, comprising specimens studied by several specialists in Chrysomeloidea (Campaner, 2014Campaner, C. 2014. Lista dos tipos da tribo Fulcidacini (Coleoptera, Chrysomelidae, Cryptocephalinae) depositados no Museu de Zoologia da Universidade de São Paulo. Papéis Avulsos de Zoologia, 54(17): 209-215. http://doi.org/10.1590/0031-1049.2014.54.17
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). For these reasons, the study of the MZUSP collection proves opportune for anyone assessing the Neotropical Megalopodidae fauna.

During a re-curation of the megalopodid collection, we came across specimens labelled as types of 30 taxa, some of which whose names do not figure in the recent world or local species lists (Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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, whereas others are cited only in the list of taxa from Brazil (Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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). These absences and conflicting data prompted us to investigate the validity of such names.

Some of these taxa were published in obscure journals with limited global reach, which are often unknown or overlooked by the coleopterist community. We therefore present an illustrated and commented catalogue of the type specimens of Megalopodidae housed in the MZUSP in order to re-introduce these barely known species to science. The inconsistencies in the data provided in the literature and in the specimens’ labels are commented and elucidated. Moreover, we address nomenclatural issues concerning the validity of taxa described as varieties and the availability of others originally described as synonyms. Finally, a brief account on the history of Monrós’ and Guérin’s collections and their arrival at the MZUSP.

MATERIAL & METHODS

All the specimens listed and illustrated are deposited in the Coleoptera collection of the Museu de Zoologia da Universidade de São Paulo (MZUSP). Information about complementary type series deposited in other collections is given when available.

The species are listed in alphabetical order in their original combination. A chronological list of citations is given for each entry and for their subsequent combinations and synonyms. The category of types (if holotype, paratype or syntype) is informed followed by a verbatim copy of labels’ data. Data on different label rows are separated by a single slash (“/”), and data on different labels are separated by double slashes (“//”). When appropriate, conflicting data, corrections, justifications and further information on type series are commented.

Photographs of type specimens and their labels are provided for all the species, preferably the holotypes. Photographs were taken on a Zeiss AxioCamlMRc 5 video camera attached to a Carl Zeiss Discovery stereomicroscope and edited on Adobe Photoshop CS6.

RESULTS

The arrival of the type specimens to the MZUSP

The major bulk of the MZUSP’s Megalopodidae collection was formed in 1987 with the acquisition of the massive personal Coleoptera collection from Ricardo von Diringshofen (“Dirings”) (1900-1986). Ferreira et al. (2016Ferreira, V.S.; Prado, L.P. & Seripierri, D. 2016. The Entomological Collection of Ricardo von Diringshofen (1900-1986) and its incorporation to the Museu de Zoologia da Universidade de São Paulo. Revista Brasileira de Entomologia, 60(2): 117-122. http://doi.org/10.1016/j.rbe.2016.01.005
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) presented biographical accounts and reported the processes of acquisition and incorporation of Dirings’ entomological collection to the MZUSP. His collection was one of the most relevant of Brazil and the Neotropical Region especially in terms of the number of specimens, but also for comprising numerous other smaller collections purchased entirely or in part from Coleoptera specialists, such as J. Guérin, G.H. Nick, J. Bechyně, B. Pohl and F. Plaumann (Costa et al., 2000Costa, C.; Ide, S.; Rosado-Neto, G.H.; Galileo, M.H.M.; Fonseca, C.R.V.; Valente, R.M. & Monné, M.A. 2000. Diagnóstico del Conocimiento de las Principales Colecciones Brasileñas de Coleoptera, In: Martín-Piera, F.; Morrone, J.J. & Melic, A. (Orgs.). Hacia un Proyecto CYTED para el Inventario y Estimación de la Diversidad Entomológica en Iberoamérica: PrIBES 2000. Vol. 1. Zaragoza, Sociedad Entomológica Aragonesa. p. 115-136.; Campaner, 2014Campaner, C. 2014. Lista dos tipos da tribo Fulcidacini (Coleoptera, Chrysomelidae, Cryptocephalinae) depositados no Museu de Zoologia da Universidade de São Paulo. Papéis Avulsos de Zoologia, 54(17): 209-215. http://doi.org/10.1590/0031-1049.2014.54.17
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; Campaner et al., 2008Campaner, C.; Lopes, P.L. & Santos, G.I.M. 2008. List of types of Erotylidae (Insecta, Coleoptera) of the Museu de Zoologia, Universidade de São Paulo, Brazil. Papéis Avulsos de Zoologia, 48(21): 237-245.; Ferreira et al., 2016Ferreira, V.S.; Prado, L.P. & Seripierri, D. 2016. The Entomological Collection of Ricardo von Diringshofen (1900-1986) and its incorporation to the Museu de Zoologia da Universidade de São Paulo. Revista Brasileira de Entomologia, 60(2): 117-122. http://doi.org/10.1016/j.rbe.2016.01.005
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).

In the occasion of the arrival of Dirings collection to the MZUSP, Martins et al. (1991Martins, U.R.; Campaner, C. & Vasques, A.M. 1991. Report of the chrysomelid collection of the Museu de Zoologia da Universidade de São Paulo. Chrysomela, 27: 7.) presented a brief overview of the whole collection, then estimated in around 2.5 million specimens, and detailed the newcomer chrysomeloid collection in each subfamily, including the number of types, total number of specimens, and those identified by Chrysomeloidea specialists, such as J. and S. Bechyně, W. Bokermann, J. Guérin and E. Uhmann.

The incorporation of Dirings’ collection to the MZUSP brought not only a great number of specimens of Megalopodidae originally assembled by him and his collaborators, but also parts of the excellent collection previously acquired from Jacintho Guérin. Dirings’ megalopodid holdings comprised 776 specimens, 617 of which determined by specialists, notably F. Monrós and J. Guérin (Martins et al., 1991Martins, U.R.; Campaner, C. & Vasques, A.M. 1991. Report of the chrysomelid collection of the Museu de Zoologia da Universidade de São Paulo. Chrysomela, 27: 7.).

Jacintho Guérin (1898-1960) was an Italian engineer who lived most of his life in Brazil, where he worked for an electricity distribution company (Nomura, 1995Nomura, H. 1995. Vultos da zoologia brasileira. Mossoró, Fundação Vingt-un-Rosado. v. 6, p. 29-30. (Coleção Mossoroense, Série C, n. 861)). He started to form his entomological collection in 1922 with butterflies, but soon after gave priority to beetles.

His collection comprising around 30,000 specimens is now deposited in the Instituto Biológico de São Paulo (IBSP, São Paulo, Brazil), except for those from the families Erotylidae, Megalopodidae and Chrysomelidae: Cryptocephalinae, which had previously been acquired by Dirings (Nomura, 1995Nomura, H. 1995. Vultos da zoologia brasileira. Mossoró, Fundação Vingt-un-Rosado. v. 6, p. 29-30. (Coleção Mossoroense, Série C, n. 861); Campaner et al., 2008Campaner, C.; Lopes, P.L. & Santos, G.I.M. 2008. List of types of Erotylidae (Insecta, Coleoptera) of the Museu de Zoologia, Universidade de São Paulo, Brazil. Papéis Avulsos de Zoologia, 48(21): 237-245.). Every specimen in his collection received an accession number that would be mentioned in his papers. Such numbers enable a reliable recognition of the specimens when these are mislabelled in the collection. We could not retrieve his record book, which might possibly be held by the IBSP. Originally, within each drawer, the species were organised according to the colour patterns and similarities, thus enabling their easy recognition and identification. Once arrived at the MZUSP, his collection was disassembled and the species scattered along with the MZUSP’s megalopodid collection and displayed in alphabetic order.

Guérin’s collection included types and other specimens originally from Francisco Monrós, an author with whom he was in constant contact and eventually exchanged material. Francisco Monrós (1922-1958) was a prolific Spanish taxonomist working in Argentina specialized in the smaller Chrysomeloidea families and subfamilies. During his short career, he assembled a substantial collection that included specimens exchanged with many eminent colleagues of his time. Upon his death, the collection was acquired by the United States National Museum (Washington, D.C., USA). Biographies and detailed information about his work and collection can be found in Blake (1958Blake, D.H. 1958. Francisco de Asis Monrós. Proceedings of the Entomological Society of Washington, 60(4): 188-189., 1961Blake, D.H. 1961. A note on the Monrós collection. Proceedings of the Entomological Society of Washington, 63(3): 207-208.) and Staines (1995Staines, C.L. 1995. Francisco de Asis Monrós: a perspective. Proceedings of the Entomological Society of Washington, 97(4): 865-865.).

Catalogue of type specimens at the MZUSP

The MZUSP houses 49 type specimens, therein comprising 27 primary types, representing 32 species and subspecies of Megalopodidae. Some of these taxa do not figure amongst the valid species in recently published Brazilian and world species list (e.g.,Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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). Some species were probably overlooked by those authors (like Agathomerus almeidaiGuérin, 1946Guérin, J. 1946. Novo Megalopodideo (Col.) do Brasil. In: Livro de Homenagem a Romualdo Ferreira d’Almeida. São Paulo, Imprensa Oficial. p. 205-210., Mastostethus columbianusGuérin, 1951Guérin, J. 1951. Megalopodides Américains des collections du Musée Frey (Col. Phytophaga). Entomologischen Arbeiten aus den Museum G. Frey, 2(2): 576-578. and Megalopus bicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.), whereas others might have been considered as invalid infra-subspecific rank (like Agathomerus bifasciatus var. nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., Mastostethus haematomelas var. unicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312. and Megalopus jacobyi var. apicalisMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.).

The taxa Agathomerus bifasciatus nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., Agathomerus elegans humerinotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., Mastostethus haematomelas unicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., Agathomerus nobilis cyaneonotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., Megalopus jacobyi apicalisMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217., and Megalopus jacobyi testaceusMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217. turned out to be valid names with subspecific rank, according to Article 45.6.4 of the Code (ICZN, 1999International Commission on Zoological Nomenclature (ICZN). 1999. International Code of Zoological Nomenclature. London, The International Trust for Zoological Nomenclature. 4.ed. xxix+306p.). In contrast, Agathomerus varians and Plesioagathomerus vittatus, from Monrós (1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.), were originally described as synonyms of other species. These names are thus unavailable (ICZN, 1999International Commission on Zoological Nomenclature (ICZN). 1999. International Code of Zoological Nomenclature. London, The International Trust for Zoological Nomenclature. 4.ed. xxix+306p., Article 11.6).

We call the attention to the fact that some type specimens from Guérin’s collection might not be labelled accordingly. Specimens of Agathomerus nickiGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72. and Nickimerus setosusGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72., labelled as allotypes, are actually the holotypes. One specimen labelled as cotype (= syntype) of Plesioagathomerus canusMonrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155. actually does not belong to the type series, since it has been collected after the species description. Other mislabelled specimens are herein corrected and commented on. Furthermore, the species that were recognized by Guérin as junior synonyms (either published or not) received a new identification label, had their red type labels removed, and were organized under the name of the senior synonym. For example, the holotype of Agathomerus nobilis cyaneonotatus was displayed amongst specimens of their senior synonym A. basalisPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20., without a red type label. Moreover, the types of Mastostethus semirufusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312. and Megalopus vittatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312. were found amongst specimens of Mastostethus angustalisiPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20. and Megalopus unifasciatusPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20., respectively, albeit these species have not been formally synonymized. A similar organisation fashion is expected to be found in other parts of Guérin’s collection, in which the putative “lost” types might be retrieved after a scrutiny throughout the collection, and they can be recognized by the matching data and accession numbers given in the original description and the specimens’ labels.

Agathomerus almeidai Guérin, 1946Guérin, J. 1946. Novo Megalopodideo (Col.) do Brasil. In: Livro de Homenagem a Romualdo Ferreira d’Almeida. São Paulo, Imprensa Oficial. p. 205-210.

(Fig. 1A-C)

Figure 1
Megalopodidae type specimens, habitus and labels. (A-C) Agathomerus almeidaiGuérin, 1946Guérin, J. 1946. Novo Megalopodideo (Col.) do Brasil. In: Livro de Homenagem a Romualdo Ferreira d’Almeida. São Paulo, Imprensa Oficial. p. 205-210., holotype; (D-F) Agathomerus bifasciatus nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., holotype; (G-I) Agathomerus elegans humerinotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype.

Agathomerus almeidaiGuérin, 1946Guérin, J. 1946. Novo Megalopodideo (Col.) do Brasil. In: Livro de Homenagem a Romualdo Ferreira d’Almeida. São Paulo, Imprensa Oficial. p. 205-210.: 205, fig. 1; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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.

Holotype: ♀ “HOLOTIPO // Lambary. / Minas. ♀ / 11.924 // Coll. J. Guerin. / S. Paulo. Brasil. / 15980 // Agathomerus / almeidai / J. Guér. / J. Guerin. det. 1944”.

Agathomerus bifasciatus nigrapex Guérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236.

(Fig. 1D-F)

Agathomerus bifasciatus ngriapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236.: 232 (incorrect original spelling).

Agathomerus bifasciatus nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., nomem emendatum.

Holotype: “HOLOTIPO // B. Horizonte. / Minas. / 1.947 // Coll. J Guerin. / S. Paulo. Brasil. / 17515 // Agathomerus / bifasciatus / v. nigrapex J. Guér / J. Guerin. det. 1949”.

Comments: The original description clearly mentions the black spots in the apex of elytra as a diagnostic character for the subspecies. Thus, the spelling “ngriapex” is here considered a lapsus, and “nigrapex” is accepted as the intended correct name. The taxon name is therefore corrected to Agathomerus bifasciatus nigrapexGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., nomem emendatum (ICZN, 1999International Commission on Zoological Nomenclature (ICZN). 1999. International Code of Zoological Nomenclature. London, The International Trust for Zoological Nomenclature. 4.ed. xxix+306p., Art. 32.5.1).

Agathomerus elegans humerinotatus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 1G-I)

Agathomerus elegans humerinotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 308, fig. 7.

Agathomerus (Euagathomerus) elegans humerinotatus,Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 194.

Holotype: “HOLOTIPO // Jabaquara. / S. Paulo. / 11.937 // Coll. J. Guerin. / S. Paulo. Brasil. / 1435 // Agathomerus / elegans. J. Guér / v. humerinotatus / J. Guerin. det. 1943”. Paratype: “PARATIPO // Cidade. / S. Paulo. / 3.938 // Coll. J. Guerin. / S. Paulo. Brasil. / 15439 // Agathomerus / elegans. / v. humerinotatus / J. Guér / J. Guerin. det. 1943”.

Other type material: 2 paratypes. 1 paratype is deposited at Instituto Biológico de São Paulo (IBSP); 1 paratype was originally deposited in the private collection of H. Zellibor, which was later incorporated in the collection of C.A. Campos Seabra and, finally, split through Brazilian entomological collections. The major part of it, however, was deposited in the Museu Nacional do Rio de Janeiro (MNRJ, Rio de Janeiro, Brazil) (Costa et al., 2000Costa, C.; Ide, S.; Rosado-Neto, G.H.; Galileo, M.H.M.; Fonseca, C.R.V.; Valente, R.M. & Monné, M.A. 2000. Diagnóstico del Conocimiento de las Principales Colecciones Brasileñas de Coleoptera, In: Martín-Piera, F.; Morrone, J.J. & Melic, A. (Orgs.). Hacia un Proyecto CYTED para el Inventario y Estimación de la Diversidad Entomológica en Iberoamérica: PrIBES 2000. Vol. 1. Zaragoza, Sociedad Entomológica Aragonesa. p. 115-136.). The current location of this paratype is unknown.

Agathomerus hieroglyphicus Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.

(Fig. 2A-C)

Figure 2
Megalopodidae type specimens, habitus and labels. (A-C) Agathomerus hieroglyphicusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261., holotype; (D-F) Agathomerus nobilis cyaneonotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312. (= Agathomerus basalisPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20.), holotype. (G-I) Agathomerus nickiGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72., holotype (not “allotype”);

Agathomerus hieroglyphicusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.: 256, fig. 3; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: “HOLOTIPO // M. Anhangara / Paraná. / 11.943 // Paraná XI/43 / M. Anhangara / Hatschbach-Leg / Coll. J. Guerin. / S. Paulo. Brasil. / 16478 // Agathomerus / hieroglyphicus / J. Guér. / J. Guerin. det. 1944”.

Agathomerus nobilis cyaneonotatus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 2D-F)

Agathomerus nobilis cyaneonotatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 309.

Agathomerus basalisPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20.: 20; Guérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.: 70 (syn.); Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Agathomerus (Agathomerus) basalis, Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 272.

Holotype: “Cantareira. / S. Paulo. / 3.937 // Coll. J. Guérin / S. Paulo Brasil. / 6513 // Agathomerus / nobilis / v. cyaneonotatus / J. Guer. / J. Guerin. det. 1943 // Agathomerus / basalis Pic. / J. Guerin. det. 1946”.

Agathomerus nicki Guérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.

(Fig. 2G-I)

Agathomerus nickiGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.: 70, fig. 2; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Agathomerus (Agathomerus) nicki,Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 272.

Holotype: “ALOTIPO // Taipas / S. Paulo. / 11.945 // Taipas / São Paulo - Capital / Dr. Nick. 11.11.45 // Coll. J. Guérin / S. Paulo Brasil. / 17813 // Agathomerus / Nicki J. Guer. / J. Guérin. det. 1947”.

Comments: The specimen labelled as “alotipo” (allotype) from the MZUSP is actually the holotype of Agathomerus nicki. All the locality data, dates and accession number given in the labels match with the data provided in the original description for the single holotype specimen.

Agathomerus quadrimaculatus Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.

(Fig. 3A-C)

Figure 3
Megalopodidae type specimens, habitus and labels. (A-C) Agathomerus quadrimaculatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261., holotype; (D-F) Agathomerus vittatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261. (currently Plesioagathomerus vittatus (Guérin)), holotype; (G-I) Mastostethus columbianusGuérin, 1951Guérin, J. 1951. Megalopodides Américains des collections du Musée Frey (Col. Phytophaga). Entomologischen Arbeiten aus den Museum G. Frey, 2(2): 576-578., paratype.

Agathomerus quadrimaculatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.: 259, fig. 5; Monrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.: 155.

Agathomerus (Mesagathomerus) quadrimaculatus,Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 183; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 273; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Agathomerus varians Monrós [unavailable], Monrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.: 146, 155, fig. 3 (syn.).

Holotype: ♀ “HOLOTIPO // Cordoba / Villa Dolores / Argentina / 2.940 // Cordoba / Villa Dolores / II-1940 // Coll. J. Guerin. / S. Paulo. Brasil. / 16562 // Agathomerus / quadrimaculatus / J. Guér. / J. Guerin. det. 1944”. Paratype: “PARATIPO // Tucuman / S. Cayteno / Argentina / 12.934 // Coll. J. Guerin. / S. Paulo. Brasil. / 16714 // XII-1934 / HOGAR AGRICOLA / S. CAYETANO / TUCUMAN // Agathomerus / quadrimaculatus / J. Guér. / J. Guerin. det. 1944”.

Comments:Monrós (1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.: 146) described Agathomerus varians as a new species, but later on, in an addendum in the last page of the same work (p. 155), he informed that A. varians is actually a synonym of A. quadrimaculatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261., which had been published a few months earlier. The name Agathomerus varians Monrós is therefore unavailable, according to Article 11.6 of the Code (ICZN, 1999International Commission on Zoological Nomenclature (ICZN). 1999. International Code of Zoological Nomenclature. London, The International Trust for Zoological Nomenclature. 4.ed. xxix+306p.), and thus cannot be considered as a junior synonym A. quadrimaculatus Guérin.

Agathomerus vittatus Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.

(Fig. 3D-F)

Agathomerus vittatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.: 258, fig. 4.

Plesioagathomerus vittatus (Guérin) [not Monrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.], Monrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.: 155; Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 199, pl. 4, fig. 3 [villatus, sic].

Plesioagathomerus vittatus Monrós [not Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.) [unavailable], Monrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.: 150, 155 (syn), fig. 4; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 285.

Holotype: ♂ “HOLOTIPO // Pindapoy / Missiones ♂ / Argentina / 10.935 // Misiones / Pindapoy / X-1955 // Coll. J. Guérin. / S. Paulo. Brasil. / 16853 // Agathomerus / vittatus. / J. Guér. / J. Guérin. det. 1944”. Paratype: ♀: “PARATIPO // Isla Martim / Garcia ♀ / Argentina / 10.921 // Isla. Martim / Garcia / 1.X.1921 // Coll. J. Guérin. / S. Paulo. Brasil. / 16769 // Agathomerus / vittatus. ♀ / J. Guér. / J. Guérin. det. 1944”. Paratype: ♂: “PARATIPO // Nove de Julio / Buenos Aires ♂ / Argentina / 11.1929 // 9 de Julio B.A. / 21/XI/29 No. 713 // Coll. J. Guérin. / S. Paulo. Brasil. / 16645 // Agathomerus / vittatus. ♂ / J. Guér. / J. Guérin. det. 1944”.

Comments:Guérin (1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.) described Agathomerus vittatus in a work issued in August. Simultaneously, in a paper issued in December, Monrós (1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155.) described the same species with a similar specific epithet but in a new genus, Plesioagathomerus vittatus. However, before his work was published, Monrós was already aware of Guérin’s paper, so that in the last page (p. 155), he included corrections for his present work, stating that Agathomerus vittatus Guérin should be transferred to Plesioagathomerus as a synonym of Plesioagathomerus vittatus Monrós. The name Plesioagathomerus vittatus Monrós was originally described as a synonym of Plesioagathomerus vittatus (Guérin) and is therefore unavailable, according to Article 11.6 of the Code (ICZN, 1999International Commission on Zoological Nomenclature (ICZN). 1999. International Code of Zoological Nomenclature. London, The International Trust for Zoological Nomenclature. 4.ed. xxix+306p.), and thus can be considered neither as a junior synonym nor as a junior homonym of P. vittatus (Guérin). Accordingly, the type species of PlesioagathomerusMonrós, 1945Monrós, F. 1945. A propósito de algunos Chrysomeloidea neotropicales (Coleoptera). Notas del Museo de La Plata, 10(86): 143-155. is Agathomerus vittatus Guérin by monotypy.

Mastostethus columbianus Guérin, 1951Guérin, J. 1951. Megalopodides Américains des collections du Musée Frey (Col. Phytophaga). Entomologischen Arbeiten aus den Museum G. Frey, 2(2): 576-578.

(Fig. 3G-I)

Mastosthethus columbianusGuérin, 1951Guérin, J. 1951. Megalopodides Américains des collections du Musée Frey (Col. Phytophaga). Entomologischen Arbeiten aus den Museum G. Frey, 2(2): 576-578.: 577; fig. 2.

Paratype: “PARATIPO // Vila Elvira / Cauca / Colombia / 1.932 // Villa Elvira / Cauca //Coll. J. Guérin. / S. Paulo. Brasil. / 18589 // Mastosthethus columbianus / J. Guér. / J. Guerin det. 1950”. Paratype: “PARATIPO // Vila Elvira / Cauca / Colombia / 1.932 // Villa Elvira / Cauca // Coll. J. Guérin. / S. Paulo. Brasil. / 18514 // Mastosthethus columbianus / J. Guér. / J. Guerin det. 1950”.

Other type material: The original description lists the holotype from “Columbia: S. Antonio” and 2 paratypes from “Columbia: Aguatal” and “Rio Vitaco” in the collection of the “Museum Georg Frey”, currently at the Naturhistorisches Museum Basel (NHMB, Basel, Switzerland). The paratype from “Aguatal” was not found in that collection (M. Geiser, personal communication).

Mastostethus cordatus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 4A-C)

Figure 4
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus cordatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (D-F) Mastostethus costaricensisGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72., holotype; (G-I) Mastostethus decoratusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549., holotype.

Mastosthethus cordatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 304; fig. 4; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: “HOLOTIPO // S. Amaro. / S. Paulo. / 2.938 // Coll. J. Guérin. / S. Paulo. Brasil. / 4872 // Mastosthethus / Cordatus / J. Guér. / J. Guerin. det. 1943”.

Mastostethus costaricensis Guérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.

(Fig. 4D-F)

Mastosthethus costaricensisGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.: 69, fig. 1.

Mastostethus costaricensis, Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 279.

Holotype: “HOLOTIPO // Guápiles / Costa Rica / 2.946 // Coll. J. Guerin. / S. Paulo. Brasil. / 17630 // Mastosthethus / costaricensis / J. Guer. / J. Guérin. det. 1947”. Paratype: “PARATIPO // Guápiles / Costa Rica / 2.946 // Coll. J. Guerin. / S. Paulo. Brasil. / 17596 // Mastosthethus / costaricensis / J. Guer. / J. Guérin. det. 1947”.

Mastostethus decoratus Guérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.

(Fig. 4G-I)

Mastosthethus decoratusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.: 547, fig. 3; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 279; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: “HOLOTIPO // Passa Quatro / Minas. / 1.923 // Passa Quatro / 915 / S. Minas. Ger. / 15.-1.-1923 / Serra / dos / cochos / 1460 m / J. Zikán // no. 278 / J.F. Zikán // Coll. J. Guerin. / S. Paulo Brasil. / 16253 // Mastosthethus / decoratus / J. Guér. / J. Guerin. det. 1944”.

Mastostethus duodecimpunctatus Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.

(Fig. 5A-C)

Figure 5
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus duodecimpunctatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261., holotype; (D-F) Mastostethus elongatusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549., holotype; (G-I) Mastostethus haematomelas unicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype.

Mastosthethus duodecimpunctatusGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.: 255, fig. 2; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: ♀ “HOLOTIPO // Curitiba. / Paraná. / 12.944 // Curitiba / Paraná / (S. Inacio / XII 944/ Hatschbach-Leg // Coll. J. Guerin. / S. Paulo. Brasil. / 17127 // Mastosthethus / duodecimpunctatus / J. Guér. ♀ / J. Guerin. det. 1945”. Paratype: “PARATIPO // Apiai / S. Paulo. / 1.945 // Coll. J. Guerin. / S. Paulo. Brasil. / 17189 // Mastosthethus / duodecimpunctatus / J. Guér. ♀ / J. Guerin. det. 1945”.

Mastostethus elongatus Guérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.

(Fig. 5D-F)

Mastosthethus elongatusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.: 548, fig. 4; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Mastostethus elongatus,Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 280.

Holotype: “HOLOTIPO // Cantareira. / S. Paulo. / 1.940 // Coll. J. Guerin. / S. Paulo Brasil. / 0274 // Mastosthethus / elongatus / J. Guér. / J. Guerin. det. 1944”.

Mastostethus haematomelas unicolor Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 5G-I)

Mastosthethus haematomelas unicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 302.

Holotype: ♂ “HOLOTIPO // Campinas. / S. Paulo. / 1937 // Coll. J. Guerin. / S. Paulo. Brasil. / 11456 // Mastosthethus / haematomelas / v. unicolor J. Guér / J. Guerin. det. 1943”. Paratype: “PARATIPO / Campinas. / S. Paulo. / 1.937 // Coll. J. Guerin. / S. Paulo. Brasil. / 11729 / Mastosthethus / haematomelas / v. unicolor J. Guér / J. Guerin. det. 1943”. Paratype: “PARATIPO / B. Horizonte. / Minas. / 10.940 // Coll. J. Guerin. / S. Paulo. Brasil. / 4245 / Mastosthethus / haematomelas / v. unicolor J. Guér / J. Guerin. det. 1943”.

Comments: In the original publication, Guérin (1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 302) defined the holotype (specimen number 11.456) as from Belo Horizonte (Minas Gerais state), and two paratypes (numbers 4,245 and 11,729) from Campinas (São Paulo state). Actually, the holotype (11.456) is from Campinas and the paratypes are from Campinas and Belo Horizonte.

Mastostethus jabaquarensis Guérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.

(Fig. 6A-C)

Figure 6
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus jabaquarensisGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549., holotype; (D-F) Mastostethus latefasciatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (G-I) Mastostethus lateripunctatusGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236., holotype.

Mastosthethus jabaquarensisGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.: 546, fig. 2; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 280; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: “HOLOTIPO // Jabaquara / S. Paulo / 11.943 // Jabaquara / S. Paulo 7.XI.43 / Coll. H. Zellibor // Coll. J. Guerin. / S. Paulo. Brasil. / 16205. // Mastosthethus / jabaquarensis / J. Guér. / J. Guerin. det. 1944”.

Mastostethus latefasciatus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 6D-F)

Mastosthethus latefasciatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 305; fig. 5; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
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Holotype: “HOLOTIPO// Leop. Bulhões. / Goiaz. // 12.937 // LEOPOLDO BULHOES / Est. Goyaz. Dez.37 / Dr. Nick. // Coll. J. Guerin. / S. Paulo. Brasil. / 15436 // Masthosthethus / latefasciatus / J. Guér. / J. Guerin. det. 1943”. Paratype: “PARATIPO // Leop. Bulhões. / Goiaz. // 12.937 // Coll. J. Guerin. / S. Paulo. Brasil. / 15407 // LEOPOLDO BULHOES / Est. Goyaz. Dez.37 / Dr. Nick. // Masthosthethus / latefasciatus / J. Guér. / J. Guerin. det. 1943”.

Mastostethus lateripunctatus Guérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236.

(Fig. 6G-I)

Mastosthethus lateripunctatusGuérin, 1949Guérin, J. 1949. Descrição de novas espécies neotropicais das famílias Crytridae, Megalopidae e Erotylidae (Col.). Revista de Entomologia, Rio de Janeiro, 20(1-3): 229-236.: 230, fig. 3.

Holotype: “HOLOTIPO // Chaparé / Bolivia / 2.948 // BOLIVIA / Chapare / 400 M. / Zischka // Coll. J Guerin. / S. Paulo Brasil. / 18218 // Mastosthethus / lateripunctatus / J. Guér / J. Guerin. det. 1949”.

Mastostethus megalopoides Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 7A-C)

Figure 7
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus megalopoidesGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (D-F) Mastostethus melanopterusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549., holotype; (G-I) Mastostesthus mirabilisGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype.

Mastosthethus megalopoidesGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 305; fig. 6; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “HOLOTIPO // Curitiba. / Paraná. / 10.934 // Coll. J. Guerin. / S. Paulo. Brasil. / 11094 // Mastosthethus / megalopoides / J. Guér. / J. Guerin. det. 1943”.

Mastostetus melanopterus Guérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.

(Fig. 7D-F)

Mastosthethus melanopterusGuérin, 1944Guérin, J. 1944. “Megalopodidae” Neotropicais (Coleoptera). Revista Brasileira de Biologia, 4(4): 545-549.: 545, fig. 1; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 281.

Holotype: ♂ “HOLOTIPO // Satipo / Huancayo / Perú / 12.939 // Satipo / Huancayo - PERU / 16-XII.1937 / Paprzycki // Coll. J. Guerin. / S. Paulo. Brasil. / 16379 // Mastosthethus / melanopterus / J. Guér. / J. Guerin. det. 1944”.

Mastostethus mirabilis Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 7G-I)

Mastosthesthus mirabilisGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 301, fig. 1; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: ♂ “HOLOTIPO // Indiana. / S. Paulo. / 5.935 // Coll. J. Guérin. / S. Paulo Brasil. / 11562 // Mastosthethus / mirabilis. / ♂ / J. Guér / J. Guerin. det. 1943”. Paratype: ♀ “ALOTIPO // Jabaquara. / S. Paulo. / 3.939 // JABAQUARA / S. Paulo 26. 3. 39 / Dr. Nick. // Coll. J. Guérin. / S. Paulo Brasil. / 15438 // Mastosthethus / mirabilis. / ♀ / J. Guér / J. Guerin. det. 1943”.

Other type material: 1 paratype ♀ was originally deposited in the private collection of H. Zellibor, which was later incorporated in the collection of C.A. Campos Seabra and, finally, split through Brazilian entomological collections. The major part, however, was deposited in the Museu Nacional do Rio de Janeiro (MNRJ, Rio de Janeiro, Brazil). The current location of this paratype is unknown.

Mastostethus nigripes Guérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.

(Fig. 8A-C)

Figure 8
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus nigripesGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261., holotype; (D-F) Mastostethus pallidusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (G-I) Mastostethus punctatusGuérin, 1952Guérin, J. 1952. Description de quatre nouvelles espèces de Megalopodidae de la “Zoologische Sammlung des Bayerischen Staates” München. Dusenia, 3(6) 435-442., paratype.

Mastosthethus nigripesGuérin, 1945Guérin, J. 1945. Novos Megalopodidae (Col.) Neotropicais. Revista de Entomologia, Rio de Janeiro, 16(1-2): 254-261.: 254, fig. 1; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: ♀ “HOLOTIPO // Barigui / Paraná. / 9.944 // Paraná. X. 944 / Barigui / R. Lange - Leg // Coll. J. Guerin. / S. Paulo. Brasil. / 16702 // Mastosthethus / nigripes ♀ / J. Guér. / J. Guerin. det. 1945”.

Mastostethus pallidus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 8D-F)

Mastosthethus pallidusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 303, fig. 2; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: ♂ “HOLOTIPO // Mafra. / S. Catarina. / 12.941 // Coll. J. Guerin. / S. Paulo. Brasil. / 11055 // Mastosthethus / pallidus / J. Guér. ♂ / J. Guérin. det. 1943”. Paratype: ♀ “ALOTIPO // Mafra. / S. Catarina. / 12.942 // Coll. J. Guerin. / S. Paulo. Brasil. / 11573 // Mastosthethus / pallidus / J. Guér. ♀ / J. Guérin. det. 1943”. Paratype: ♂ “PARATIPO // Mafra. / S. Catarina. / 3.942 // Coll. J. Guerin. / S. Paulo. Brasil. / 11698 // Mastosthethus / pallidus / J. Guér. ♂ / J. Guérin. det. 1943”. Paratype: ♀ “PARATIPO // Mafra. / S. Catarina. / 2.942 // Coll. J. Guerin. / S. Paulo. Brasil. / 10853 // Mastosthethus / pallidus / J. Guér. ♀ / J. Guérin. det. 1943”.

Mastostethus punctatus Guérin, 1952Guérin, J. 1952. Description de quatre nouvelles espèces de Megalopodidae de la “Zoologische Sammlung des Bayerischen Staates” München. Dusenia, 3(6) 435-442.

(Fig. 8G-I)

Mastosthethus punctatusGuérin, 1952Guérin, J. 1952. Description de quatre nouvelles espèces de Megalopodidae de la “Zoologische Sammlung des Bayerischen Staates” München. Dusenia, 3(6) 435-442.: 435, fig. 1.

Paratype: “PARATIPO // Maracay / Venezuela / 1918 // Venezuela / Maracay / coll. P. Vogl // Coll. J. Guerin. / S. Paulo. Brasil. / 18809 // Mastosthethus / punctatus / mihi / J. Guérin. det. 1952”.

Other type material: Holotype deposited in the “Zoologische Sammlung des Bayerischen Staates”, currently “Zoologische Staatssammlung München” (SNSB, Munich, Germany).

Mastostethus semirufus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 9A-C)

Figure 9
Megalopodidae type specimens, habitus and labels. (A-C) Mastostethus semirufusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (D-F) Megalopus bicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (G-I) Megalopus jacobyi var. apicalisMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217., syntype.

Mastosthethus semirufusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 303; fig. 3; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “Lambary. / Minas / 11.924 // Coll. J. Guerin. / S. Paulo Brasil. / 10679 // Mastosthethus / semirufus ♂ / J. Guér / J. Guerin. det. 1943 // Mastosthethus / angustalisi Pic // J. Guerin. det. 1949”. Paratype: “Jabaquara. / S. Paulo / 10.938 // JABAQUARA / S. Paulo / Dr. Nick. 30.10.38. // Coll. J. Guerin. / S. Paulo Brasil. / 15473 // Mastosthethus / semirufus ♂ / J. Guér / J. Guerin. det. 1943 // Mastosthethus / angustalisi Pic // J. Guerin. det. 1949”. Paratype: “Jabaquara. / S. Paulo / 2.933 // Coll. J. Guerin. / S. Paulo Brasil. / 4140 // Mastosthethus / semirufus ♀ / J. Guér / J. Guerin. det. 1943 // Mastosthethus / angustalisi Pic // J. Guerin. det. 1949”. Paratype: “Casa Grande. / S. Paulo / 2.936 // Coll. J. Guerin. / S. Paulo Brasil. / 4203 // Mastosthethus / semirufus ♀ / J. Guér / J. Guerin. det. 1943 // Mastosthethus / angustalisi Pic // J. Guerin. det. 1949”.

Comments: The holotype of Mastostethus semirufus was identified and labelled by Guérin as a synonym of Mastostethus angustalisiPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20.. However, that synonymy has not been published.

Megalopus bicolor Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 9D-F)

Megalopus bicolorGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 310, fig. 9; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “HOLOTIPO // Rio Paraguary. / Amazonas. / 3.937 // RIO PARAUARY / Amaz. 15.3.37. / Coll. Zellibor-Hauff // Coll. J. Guerin. / S. Paulo Brasil. / 10349 // Megalopus / bicolor / ♀ / J. Guér / J. Guerin. det. 1943”.

Megalopus (Mucromegalopus) jacobyi apicalis Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.

(Fig. 9G-I)

Megalopus (Mucromegalopus) jacobyi var. apicalis Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 214, fig. 51c.

Syntype: “PARATIPO // Salta / Rosario de la / Frontera / Argentina / 2.944 // Arg. Salta / Rosario de la / Frontera 2.44 / El Naranjo / Monrós // Coll. J. Guerin. / S. Paulo. Brasil. / 18393 // Meg. (Mucrom.) / jacobyi var. / apicalis mihi / F. Monrós det. 1946 // Paratipo”.

Comments:Monrós (1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.) did not fix holotypes for the so-called varieties (i.e., subspecies) of M. jacobyi. Thus, the type specimens labelled as “paratype” or “cotype” are here considered as syntypes.

Megalopus (Mucromegalopus) jacobyi testaceus Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.

(Fig. 10A-C)

Figure 10
Megalopodidae type specimens, habitus and labels. (A-C) Megalopus jacobyi var. testaceusMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217. syntype; (D-F) Megalopus olivenciusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (G-I) Megalopus (Mucromegalopus) vespa var. vespaMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217., paratype.

Megalopus (Mucromegalopus) jacobyi var. testaceusMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 213, fig. 51a.

Syntype: “COTIPO // Salta. Oran / Tablillas / Argentina / 1.946 // Argentina / Salta / Oran. tabli- / llas Martinez // Coll. J. Guerin. / S. Paulo. Brasil. / 18419 // Cotipo // Meg. (Mucrom.) / jacobyi var. / testaceus mihi / F. Monrós det. 1946”.

Comments: see comment above for Megalopus jacobyi apicalis.

Megalopus olivencius Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 10D-F)

Megalopus olivenciusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 309, fig. 8; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “HOLOTIPO // S.P. Olivença / Amazonas / 7.935 // Coll. J. Guerin. / S. Paulo. Brasil. / 11990 // Megalopus / olivencius ♀ / J. Guér / J. Guerin. det. 1943”.

Megalopus (Mucromegalopus) vespa vespa Monrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.

(Fig. 10G-I)

Megalopus (Mucromegalopus) vespa var. vespaMonrós, 1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 208, fig. 49; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 284.

Paratype: “COTIPO // Salta / C. Moldes la Ollada / Argentina / 1946 // Arg.- Salta / C. Moldes / La Ollada / Monrós // Coll. J. Guerin. / S. Paulo. Brasil. / 18385 // Megalopus / (Mucromegal.) / vespa s. str. / mihi / F. Monrós det. 1946 // Cotipo”.

Comments: It is not clear whether this specimen is indeed a type or not, due to conflicting collecting year in the specimen’s labels (1946) and in the publication (1945). Although the specimen is labelled as “cotipo”, it might actually be a paratype, as originally defined by Monrós (1947Monrós, F. 1947. Revision de los Megalopodidae Argentinos (Col. Chrysomeloidea). Revista de la Sociedad Entomológica Argentina, 13: 150-217.: 210).

Megalopus vittatus Guérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.

(Fig. 11A-C)

Figure 11
Megalopodidae type specimens, habitus and labels. (A-C) Megalopus vittatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312., holotype; (D-F) Nickimerus setosusGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72., holotype (not “allotype”).

Megalopus vittatusGuérin, 1943Guérin, J. 1943. Novos Megalopodidae (Col.) do Brasil. Revista Brasileira de Biologia, 3(3): 301-312.: 311; fig. 10; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “Jabaquara / S. Paulo. / 3.934 // Coll. J. Guerin / S. Paulo Brasil. / 4146 // Megalopus / vittatus ♂ / J. Guér / J. Guerin. det. 1943 // Megalopus / unifasciatus / Pic / J. Guerin. det. 1949”.

Comments: The holotype of Megalopus vittatus had the type label removed and was identified and labelled by Guérin as a synonym of Megalopus unifasciatusPic, 1916Pic, M. 1916. Espèces et variétés nouvelles. Mélanges exotico-entomologiques, 19: 6-20.. However, that synonymy has not been published. The specimen can be reliably recognised as the holotype by the labels’ data and accession number.

Nickimerus setosus Guérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.

(Fig. 11D-F)

Nickimerus setosusGuérin, 1948Guérin, J. 1948. “Megalopodidae” neotropicais. Descrição de um novo gênero e novas espécies (Col.). Revista Brasileira de Biologia, 8(1): 69-72.: 71, fig. 3; Rodríguez-Mirón, 2018Rodríguez-Mirón, G.M. 2018. Checklist of the family Megalopodidae Latreille (Coleoptera: Chrysomeloidea); a synthesis of its diversity and distribution. Zootaxa, 4434(2): 265-302.: 285; Botero, 2020Botero, J.P. 2020. Megalopodidae. In: Catálogo Taxonômico da Fauna do Brasil. PNUD. Available: Available: http://fauna.jbrj.gov.br/fauna/faunadobrasil/124837 . Access: 01/04/2020.
http://fauna.jbrj.gov.br/fauna/faunadobr...
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Holotype: “ALOTIPO // S. Amaro. / S. Paulo. / 1.944 // Coll. J. Guerin / S. Paulo Brasil. / 17203 // Morumbi / São Paulo Capital / Dr. Nick. 21.1.44. // Nickimerus / setosus. J. Guér / J. Guerin. det. 1947”.

Comments: The specimen labelled as “alotipo” (allotype) from the MZUSP is actually the holotype of Nickimerus setosus. All the locality data, dates and accession number given in the labels match with the data provided in the original description for the single holotype specimen.

ACKNOWLEDGEMENTS

We are thankful to Guilherme Ide M. dos Santos for taking most of the photographs used in this work, to Sônia A. Casari and Juan Pablo Botero (MZUSP) for comments and suggestions in the early version of this manuscript, to Michael Geiser for looking for the paratype of Mastostethus columbianus in the Naturhistorisches Museum Basel, Switzerland,, and to two anonymous reviewers for their valuable suggestions and corrections.

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  • Published with the financial support of the "Programa de Apoio às Publicações Científicas Periódicas da USP"

Edited by

Edited by: Simone Policena Rosa

Publication Dates

  • Publication in this collection
    12 Feb 2021
  • Date of issue
    2021

History

  • Received
    17 Oct 2020
  • Accepted
    16 Dec 2020
  • Published
    29 Jan 2021
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