Iheringia. Série Zoologiahttps://www.scielo.br/feed/isz/2013.v103n2/2023-03-31T20:02:48.834000ZVol. 103 No. 2 - 2013WerkzeugTaxonomy, distribution and population structure of invasive Corbiculidae (Mollusca, Bivalvia) in the Suquía River basin, Córdoba, Argentina10.1590/S0073-472120130002000012023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZReyna, Paola B.Morán, Ariana G.Tatián, Marcos
<em>Reyna, Paola B.</em>;
<em>Morán, Ariana G.</em>;
<em>Tatián, Marcos</em>;
<br/><br/>
Invasive species are one of the most significant causes of biodiversity loss and changes in ecosystem services, which underlines the importance of their detection and their study. The Asian clams (Corbiculidae) are invasive organisms that accidentally entered the La Plata River, Argentina, presumably in the 1960s. The objectives of the present study were to identify the corbiculid species and to determine their distribution at several locations along the Suquía River basin, an extended area in central Argentina. In addition, population structure was evaluated monthly during one year, at a site in the city of Córdoba that is characterized by high human influence. The presence of Corbicula fluminea (Müller, 1774) and Corbicula largillierti (Philippi, 1844) in the Suquía River basin is reported for the first time. The former species was found only in a lentic environment (San Roque reservoir), while the latter was also found along the tributary rivers and brooks of the basin. Corbicula largillierti showed variations in average density between the different sites and also in biomass and size classes throughout the study period at the site at Córdoba city. The relative composition of the sediments, flow fluctuation and human pollution may be responsible for the observed differences.Bird communities in three forest types in the Pernambuco Centre of Endemism, Alagoas, Brazil10.1590/S0073-472120130002000022023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZLobo-Araújo, Lahert W.Toledo, Mário T. F.Efe, Márcio A.Malhado, Ana C. M.Vital, Marcos V. C.Toledo-Lima, Guilherme S.Macario, PhoeveSantos, Jhonatan G. dosLadle, Richard J.
<em>Lobo-Araújo, Lahert W.</em>;
<em>Toledo, Mário T. F.</em>;
<em>Efe, Márcio A.</em>;
<em>Malhado, Ana C. M.</em>;
<em>Vital, Marcos V. C.</em>;
<em>Toledo-Lima, Guilherme S.</em>;
<em>Macario, Phoeve</em>;
<em>Santos, Jhonatan G. Dos</em>;
<em>Ladle, Richard J.</em>;
<br/><br/>
The Pernambuco Center of Endemism (PCE) in northeastern Brazil is highly fragmented and degraded. Despite its potential conservation importance the bird fauna in this area is still relatively unknown and there are many remnant fragments that have not been systematically surveyed. Here, we report the results of bird surveys in five forest fragments (one pioneer, two ombrophilous and two seasonal). In total, 162 taxa were recorded, 12 of which are endemic to the PCE. The frequency of endangered species was lower than what has been reported in studies from the same area and most of the taxa considered to be at risk of extinction were sub-species of uncertain taxonomic validity. The comparatively low number of endemic/threatened species may be due to the small size of the fragments in the present study - a consequence of the high levels of habitat loss in this region. Analysis of species richness patterns indicates that ombrophilous forest fragments are acting as refuges for those bird species that are most sensitive to environmental degradation.Mollusks: how are they arranged in the rocky intertidal zone?10.1590/S0073-472120130002000032023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZVeras, Débora R. A.Martins, Inês X.Matthews-Cascon, Helena
<em>Veras, Débora R. A.</em>;
<em>Martins, Inês X.</em>;
<em>Matthews-Cascon, Helena</em>;
<br/><br/>
Mollusks occupy different kinds of environments, including the intertidal zone. The present study investigated the spatial distribution of mollusks on beach rocks of the intertidal zone of Pacheco Beach in the state of Ceará, Brazil. Sampling occurred from August 2006 to September 2007. Across two transects, six samples of 0.25 m² were collected monthly in gaps of 30 m (0 m, 30 m, 60 m, 90 m, 120 m and 150 m). The mollusks were counted in field, and samples of sediment and algae were taken for further analysis. A total of 74,515 individuals were found and classified into 67 species, 52 genera and 39 families. Gastropods were predominant, corresponding to 73.1% of the species, followed by bivalves (22.4%) and chitons (4.5%). Caecum ryssotitum de Folin, 1867 was the most abundant taxon, representing 68.8% of total specimen findings. In general, species were mostly found in Middle Littoral zone (samples 60 m and 90 m), suggesting that the greater number of microenvironments available in this area may contribute to establishment and survival.Resposta da assembleia de formigas na interface solo-serapilheira a um gradiente de alteração ambiental10.1590/S0073-472120130002000042023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZGomes, Diego S.Almeida, Fábio S.Vargas, André B.Queiroz, Jarbas M.
<em>Gomes, Diego S.</em>;
<em>Almeida, Fábio S.</em>;
<em>Vargas, André B.</em>;
<em>Queiroz, Jarbas M.</em>;
<br/><br/>
O estudo objetivou avaliar a resposta da assembleia de formigas que nidificam na interface solo-serapilheira a um gradiente de alteração ambiental. O estudo foi realizado em três ambientes com diferentes usos do solo: fragmento florestal, sistema agroflorestal (SAF) e pastagem situados em região de domínio da mata atlântica no sudeste do Brasil. Em cada ambiente foram demarcadas 10 parcelas de 1 m² e todos os ninhos de formigas encontrados foram registrados. Foram encontrados 215 ninhos (103 no fragmento florestal, 64 no sistema agroflorestal e 48 na pastagem), de 31 espécies. O número acumulado de espécies foi maior no fragmento florestal que na pastagem, mas não diferiu do SAF. A composição de espécies foi diferente entre o fragmento florestal e os outros dois ambientes. A riqueza média de espécies de formigas por parcela foi maior no fragmento florestal e menor na pastagem. A quantidade de serapilheira não foi um fator importante para as diferenças na riqueza de espécies. Atividades humanas que reduzam a heterogeneidade da vegetação alteram a composição e diminuem a riqueza de espécies das assembleias de formigas.Life history, biomass and production of Coronatella rectangula (Branchiopoda, Anomopoda, Chydoridae) from Minas Gerais10.1590/S0073-472120130002000052023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZViti, ThaisWisniewski, CélioOrlando, Tereza CristinaSantos-Wisniewski, Maria José dos
<em>Viti, Thais</em>;
<em>Wisniewski, Célio</em>;
<em>Orlando, Tereza Cristina</em>;
<em>Santos-Wisniewski, Maria José Dos</em>;
<br/><br/>
Species of Chydoridae provide the main diversity of the Cladocera. These organisms have been the subject of many studies; some dealing with their role in energy flow in aquatic ecosystems, since they inhabit the littoral region of water bodies which undergo the first impacts from anthropic activities. The aim of this study is to increase knowledge about the life cycle of Coronatella rectangula (Sars, 1861), a species found in several water bodies in the state of Minas Gerais, Brazil. The life cycle was determined by the culture of parthenogenetic females under controlled conditions in the laboratory. Experimental cultures were maintained in growth chambers at a constant temperature of 23.6(±0.5)ºC, through a 12 h light/12 h dark photoperiod. The organisms were fed on a suspension of Pseudokirchneriella subcapitata (Chlorophyceae) (10(5) cells.mL-1), and 0.02 mL of a mixed suspension of yeast and fish ration added per organism in equal proportions (1:1). Fifty parthenogenetic females with eggs were isolated and maintained until they produced neonates. Thirty of these neonates that had less than 24 hours were put in polypropylene bottles of 50 mL and kept in a germination chamber. These organisms were observed daily to obtain the parameters of the life cycle. Biomass and secondary production were also calculated. The embryonic development time of the specimens of C. rectangula was 1.68(±0.13) days and the time to reach primipara, was 2.48(±0.45) days. The mean fecundity of C. rectangula was two eggs/female/brood and the total number of eggs produced by the female during its life cycle was 27.8 eggs. During the whole life cycle, specimens of C. rectangula had a maximum of 14 seedlings, with two instars in the juvenile stage. Total biomass for C. rectangula was 36.66 µgDW.m-3(9.83 for the juvenile stage and 26.82 µgDW.m-3 for adults), and secondary production was 12.10 µgDW.m-3.day-1(8.34 µgDW.m-3.day-1 for egg production and 3.76 µgDW.m-3.day-1 for the juvenile stage).Ciclos de vida comparados de Aedes aegypti (Diptera, Culicidae) do semiárido da Paraíba10.1590/S0073-472120130002000062023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZCastro Jr., Francisco P. deMartins, Walter F. S.Lucena Filho, Mauricio L. deAlmeida, Raul P. deBeserra, Eduardo B.
<em>Castro Jr., Francisco P. De</em>;
<em>Martins, Walter F. S.</em>;
<em>Lucena Filho, Mauricio L. De</em>;
<em>Almeida, Raul P. De</em>;
<em>Beserra, Eduardo B.</em>;
<br/><br/>
O presente trabalho teve como objetivo comparar os ciclos de vida entre amostras de populações de Aedes aegypti (Linnaeus, 1762) coletadas em dez municípios localizados no semiárido paraibano. Os ciclos de vida foram estudados a uma temperatura de 26 ± 2ºC, umidade relativa de 60 ± 10% e fotofase de 12 horas. Diariamente foram avaliados os períodos de desenvolvimentos e as viabilidades das fases de ovo, larva e pupa, bem como a razão sexual, longevidade, tamanho e fecundidade dos adultos. Foi realizada uma análise de agrupamento, utilizando-se uma matriz de distância euclidiana através do método da média não-ponderada. As durações e viabilidades para as fases de ovo, larva e pupa apresentaram respectivamente, uma variação média de 3,7 a 4,7 dias e 82,8% a 97,7%, 9,1 a 10,8 dias e 91,2% a 99,2% e de 2,1 a 2,5 dias e 93,5% a 98,4%. O comprimento alar foi de 5,13 a 5,34 mm para as fêmeas e de 4,18 a 4,25 mm para os machos. A menor fecundidade (153,6 ovos/fêmea) ocorreu na população de A. aegypti oriunda de Pedra Lavrada, enquanto que a maior fecundidade (310,6 ovos/fêmea) foi constatada para A. aegypti de Campina Grande. A análise de agrupamento com base na similaridade dos dados biológicos revelou a formação de dois grandes grupos distintos, onde as populações de A. aegypti de Serra Branca e Cuité apresentam maior similaridade entre si. As diferenças de ciclos biológicos verificadas entre as populações de A. aegypti demonstra a capacidade dessa espécie de sofrer variações na sua biologia e se adaptar às diferentes condições ambientais, favorecendo a permanência deste inseto nessas áreas com aumento do risco de transmissão do vírus da dengue.Hatching and larval export of the intertidal crab Neohelice granulata in Mar Chiquita coastal lagoon, Argentina10.1590/S0073-472120130002000072023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZSánchez Vuichard, GuillerminaFarías, NahuelLuppi, Tomás
<em>Sánchez Vuichard, Guillermina</em>;
<em>Farías, Nahuel</em>;
<em>Luppi, Tomás</em>;
<br/><br/>
Synchronization in the events of the reproductive cycle in female Neohelice granulata Dana, 1851 were studied from samples taken weekly and biweekly from September to December 2006 in the Laguna Mar Chiquita. The timing and larval hatching and synchronicity were inferred from numbers of ovigerous females and observing the stages of embryonic development. Synchronization in larval hatching also was observed in females in experiments in dark for a period of 48 hours, at three different salinities (10, 23 and 33 ppm). In addition plankton sampling were performed in order to study larval exportation at the field and its link to the tidal and light/dark cycles. We found that ovigerous females of N. granulata have a marked synchronization in embryonic development which results in that most of berried females are close to hatching within a period of maximum tidal range (days). Within this period, there is a synchronization of hatching at a time scale of hours, governed by environmental conditions. The salinity range used in this study (10-32‰) did not affect hatching synchronicity neither time to hatch. Hatching was synchronized according to endogenous rhythms governed mainly by the tidal cycle and secondarily by the breadth of it. It is also conditioned by the light-dark cycle through an exogenous cycle, so that the hatchings would occur mostly at night high tides.New records, and the first description of a female, for Psychoda simillima (Diptera, Psychodidae) in southern South America10.1590/S0073-472120130002000082023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZCordeiro, DaniloOmad, GuillermoBravo, FreddyCarvalho, Claudio J. B. de
<em>Cordeiro, Danilo</em>;
<em>Omad, Guillermo</em>;
<em>Bravo, Freddy</em>;
<em>Carvalho, Claudio J. B. De</em>;
<br/><br/>
Based onmale and female, Psychoda simillima Tonnoir, 1929 is redescribed, with a discussion of generic and subgeneric classifications. This is the first record for Chile as well as the first description of a female for this species.Effects of both ecdysone and the acclimation to low temperature, on growth and metabolic rate of juvenile freshwater crayfish Cherax quadricarinatus (Decapoda, Parastacidae)10.1590/S0073-472120130002000092023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZChaulet, AnoukVatnick, ItzickRodríguez, Enrique M.
<em>Chaulet, Anouk</em>;
<em>Vatnick, Itzick</em>;
<em>Rodríguez, Enrique M.</em>;
<br/><br/>
Growth, metabolic rate, and energy reserves of Cherax quadricarinatus (von Martens, 1868) juveniles were evaluated in crayfish acclimated for 16 weeks to either 25ºC (temperature near optimum) or 20ºC (marginal for the species). Additionally, the modulating effect of ecdsyone on acclimation was studied. After 12 weeks of exposure, weight gain of both experimental groups acclimated to 25ºC (control: C25, and ecdysone treated: E25) was significantly higher than that of those groups acclimated to 20ºC (C20 and E20). A total compensation in metabolic rate was seen after acclimation from 25ºC to 20ºC; for both the control group and the group treated with ecdysone. A Q10value significantly higher was only observed in the group acclimated to 20ºC and treated with ecdysone. A reduction of glycogen reserves in both hepatopancreas and muscle, as well as a lower protein content in muscle, was seen in both groups acclimated to 20ºC. Correspondingly, glycemia was always higher in these groups. Increased lipid levels were seen in the hepatopancreas of animals acclimated to 20ºC, while a higher lipid level was also observed in muscle at 20ºC, but only in ecdysone-treated crayfish.The influence of temperature and humidity on abundance and richness of Calliphoridae (Diptera)10.1590/S0073-472120130002000102023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZAzevedo, Rodrigo R.Krüger, Rodrigo F.
<em>Azevedo, Rodrigo R.</em>;
<em>Krüger, Rodrigo F.</em>;
<br/><br/>
The blowfly species are important components in necrophagous communities of the Neotropics. Besides being involved in the degradation of animal organic matter, they may serve as vectors for pathogens and parasites, and also cause primary and secondary myiasis. The occurrence pattern of these species is well defined, yet it is still not very clear which of these environmental factors determine the structure of the assemblies. This paper was developed to evaluate the influence of mean temperature and relative humidity variation in the abundance and richness of blowflies in the Brazilian southernmost state, Rio Grande do Sul, where temperature variation is well marked throughout the year. To evaluate this objective, WOT (Wind Oriented Trap) were installed with beef liver as bait in three environments for 10 consecutive days in each month between July 2003 and June 2004. A total of 13,860 flies were collected distributed among 16 species with a higher frequency of Lucilia eximia (Wiedemann, 1819) and Chrysomya albiceps (Wiedemann, 1819). The mean temperature and relative humidity influence the richness of blowflies, with greater richness and abundance in late spring and early summer, whereas abundance was only influenced by temperature. Each species responded differently with respect to these variables, where L. eximia is not influenced by any of the two abiotic factors, despite the high abundance presented. This paper presents the results of the sensitivity for the presence or absence of species of Calliphoridae and on the variation of the abundance of these species under regime temperature changes and relative humidity with implications for public health and animal management.Morphological characterization and sex-related differences of the mandible of the armadillos Chaetophractus vellerosus and Zaedyus pichiy (Xenarthra, Dasypodidae), with consideration of dietary aspects10.1590/S0073-472120130002000112023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZSidorkewicj, Nora S.Casanave, Emma B.
<em>Sidorkewicj, Nora S.</em>;
<em>Casanave, Emma B.</em>;
<br/><br/>
The morphological characteristics of the mandible of adult Chaetophractus vellerosus (Gray, 1865) and Zaedyus pichiy (Desmarest, 1804) were studied to establish its generalized design and to identify inter- and intra- (sexual) specific differences. Morphological descriptions were complemented with the application of univariate and multivariate (analysis of correlation matrices, PCA, discriminant analysis) techniques. The mandible of both species is very similar, and is characterized by elevated condyle, well developed angular process, distinct coronoid process, tooth row which extends to the rear end of the angle between body and ramus, and unfused but firm symphysis. Although both armadillos are omnivorous, a more slender configuration of the jaw in Z. pichiy could be indicative of a better adaptation of its masticatory apparatus to insectivory. The PCA showed an almost total segregation of both species on PC1 (47.7% of the total variance), with C. vellerosus being associated to mandibles taller and with wider body and ramus. Zaedyus pichiy was characterized by heavy loadings of length parameters on PC2 (22.6% of the variance). A small degree of sexual dimorphism was found, with size-based differences in C. vellerosus (larger mandibles in females) and shape-based differences in Z. pichiy (taller mandibles in males, longer ones in females). Correlations between variables were higher in males of both species, indicating a more stable shape of the mandible than in females. The selected parameters to discriminate sexes were the body length of the mandible in C. vellerosus (correct classification: ca. 86% in males, 81% in females), and the height of the mandible at the level of the last tooth in Z. pichiy (near 85% of right assignment in both sexes). The inclusion of a new variable (body length) in the latter species improved the classification of the females to 100%. Teeth are typically 10 in C. vellerosus and 9 in Z. pichiy, but aberrancies in this basic number, such as unilateral or bilateral extra or fewer teeth, are common.Review of the breeding status of birds in Rio Grande do Sul, Brazil10.1590/S0073-472120130002000122023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZMaurício, Giovanni N.Bencke, Glayson ArielRepenning, MárcioMachado, Diogenes BorgesDias, Rafael A.Bugoni, Leandro
<em>Maurício, Giovanni N.</em>;
<em>Bencke, Glayson Ariel</em>;
<em>Repenning, Márcio</em>;
<em>Machado, Diogenes Borges</em>;
<em>Dias, Rafael A.</em>;
<em>Bugoni, Leandro</em>;
<br/><br/>
Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management and conservation actions for these organisms. Comprehensive reviews of this kind of information are lacking for most Neotropical regions, including Rio Grande do Sul, the southernmost Brazilian state. Aiming to update the knowledge on the reproductive status of birds in Rio Grande do Sul, we reviewed breeding records of all potential breeding species recorded in the state using a set of predefined, restrictive criteria for accepting breeding evidences as effective. Data satisfying our criteria were available for 165 species in the literature. We also collected novel breeding information obtained in the state for an additional 126 species, including observations for several species whose reproductive biology is poorly known. Among these are birds previously unknown to breed in Brazil. This new data and the critical review of the previous information resulted in a total of 291 species for which breeding evidences are accepted as effective. This corresponds to 54.7% of the 532 species considered either confirmed or potential breeders in the state. In addition to providing information on nesting dates, clutch size, nest architecture and breeding behavior of south Brazilian birds, our review serves as a benchmark for the adequate assessment of avian breeding records elsewhere. We hope to stimulate observers to rigorously document breeding events, especially for taxa for which basic information is lacking.On Munduruku, a new Theraphosid genus from Oriental Amazonia (Araneae, Mygalomorphae)10.1590/S0073-472120130002000132023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZMiglio, Laura T.Bonaldo, Alexandre B.Pérez-Miles, Fernando
<em>Miglio, Laura T.</em>;
<em>Bonaldo, Alexandre B.</em>;
<em>Pérez-Miles, Fernando</em>;
<br/><br/>
Munduruku gen. nov. is proposed for the type species Munduruku bicoloratum sp. nov., from Juruti and Santarém, Pará, Brazil. The main diagnostic character of Munduruku gen. nov. is the presence of a subapical, lanceolate keel on the male palpal bulb, which is unique among the basal taxa of Theraphosinae with type III-IV urticating setae. The female spermathecae consist of two spheroid receptacles with funnel-shaped necks, each of which bears a sclerotized area. In both sexes, the abdomen is remarkably patterned, an uncommon feature in adults of New World theraphosids. Both the bulbus lanceolate keel and the abdominal color pattern are hypothesized as synapomorphies of the genus.Morfohistología testicular de Ceratophrys ornata (Bell) (Amphibia, Anura, Ceratophryidae)10.1590/S0073-472120130002000142023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZCarezzano, FernandoUrquiza, SergioDorflinger, KarinaAlonso, Matías
<em>Carezzano, Fernando</em>;
<em>Urquiza, Sergio</em>;
<em>Dorflinger, Karina</em>;
<em>Alonso, Matías</em>;
<br/><br/>
En el presente trabajo se describen las características morfohistológicas del testículo de individuos adultos (n=5) de Ceratophrys ornata (Bell, 1843) provenientes de humedales del centro de Argentina. Los mismos se procesaron mediante técnicas histológicas de rutina, se cortaron a 8 µm y las láminas obtenidas se tiñeron con hematoxilina-eosina y tricrómico de Masson. Las gónadas son órganos pares, amarillentos, alargados y contorneados de 18,58 ± 0,23 mm de largo por 1,51 ± 0,13 mm de ancho. Histológicamente se observa una delgada túnica albugínea (6,29 ± 0,83 µm) rodeando a los testículos. En su interior se hallan lóculos seminíferos que miden 240,64 ± 38,52 µm de diámetro, en ellos se distinguen cistos con células espermatogénicas en distintas etapas de desarrollo. El tejido intersticial es escaso y en él se destacan las células de Leydig y vasos sanguíneos. Las espermatogonias I son las células más grandes de la serie germinal (20,03 ± 2,27 µm); poseen la cromatina granular y de aspecto multilobular, hallándose comúnmente una por cisto, estas originan a las espermatogonias II, más pequeñas (12,06 ± 1,14 µm). Los espermatocitos I presentan la cromatina levemente condensada y son un poco más chicos que sus precedentes (11,64 ± 0,36 µm). Los espermatocitos II miden 8,85 ± 0,54 µm. Las espermátidas I son esféricas, miden 5,95 ± 0,42 µm y se agrupan en cistos redondeados. Las espermátidas II, en cambio son alargadas y no se hallan dentro de cistos, pero siguen organizadas en paquetes asociadas a células de Sertoli. Los espermatozoides son células libres hacia el centro del lóculo, alargadas, flageladas y con una notable compactación nuclear. La morfohistología de los testículos analizados muestran características macroscópicas e histológicas similares a las observadas en otras especies de anfibios anuros neotropicales, presentando todas las células del linaje espermatogénico en un mismo lóculo, lo que indicaría que presentan ciclos espermatogénicos continuos.Compared nymphal development of Tingis americana (Hemiptera, Tingidae) in two Handroanthus species (Bignoniaceae) and reproductive parameters in seedlings of Handroanthus heptaphyllus10.1590/S0073-472120130002000152023-03-31T20:02:48.834000Z2020-08-09T06:48:36.060000ZMoreira, Daiane C.Redaelli, Luiza R.Guidoti, MarcusBarcellos, Aline
<em>Moreira, Daiane C.</em>;
<em>Redaelli, Luiza R.</em>;
<em>Guidoti, Marcus</em>;
<em>Barcellos, Aline</em>;
<br/><br/>
Nymphs and adults of Tingis americana Drake, 1922 were found feeding on leaves of Handroanthus heptaphyllus (Vell.) Mattos and Handroanthus chrysotrichus (Mart. ex A. DC.) Mattos in the Botanic Garden, Porto Alegre, state of Rio Grande do Sul, Brazil. This is the first record of T. americana on these host plants and in the southern Brazil. We aimed to compare the nymphal development on both hosts and to analyze the reproductive parameters on H. heptaphyllus (25 ± 1ºC; 60 ± 10% RH; 16 h photophase). The mean nymphal period (days) was shorter in individuals reared on H. heptaphyllus (12.69 ± 0.076) than on H. chrysotrichus (19.11 ± 0.208) (P < 0.0001), however, nymph viability was similar. On H. heptaphyllus, the mean embryonic period lasted 12.32 ± 0.274 days and the egg viability was 92%. The mean total and daily fecundity were 310.0 ± 19.40 eggs/female and 7.46 ± 0.302 eggs/female/day, respectively. Paired males and females showed similar longevity (P = 0.0691), while unpaired females lived longer than unpaired males (P = 0.0460).