Insects of the order Hemiptera (Heteroptera) are considered the largest group of insects with incomplete metamorphosis. Representatives of the Gerromorpha and Nepomorpha infraorders are found in the Brazilian Savanna (Cerrado Biome). This manuscript provides information about the occurrence and distribution of families and genera that occur in the states of the Cerrado Biome, deposited in the UnB Aquatic Invertebrate Collection (CIAq-UnB). The collection started in 1995 and have aquatic specimens of Cerrado Biome. An identification key is also presented for the families and genera that occur in this region.

The Brazilian legal Amazon occupies approximately 61% of its territory, covering a large part of Brazil's biodiversity. This large territorial dimension generates huge gaps in the animal diversity understanding, for example, the poor knowledge regarding the Odonata order. Worldwide, Odonata has almost 6,500 described species, with approximately 1,800 being recorded for the Neotropical region. Data on the Odonata order in the legal Amazon is still scarce, mainly due to its particularities, and little is known about the diversity of dragonflies in some of Brazilian states. Thus, the objective of this study is to present a list of species occurring in the states that make up the Brazilian legal Amazon. The list was made from the analysis of approximately 165 scientific papers, in addition to occurrence records contained in the SiBBr and GBIF databases. 641 species were found, which is equivalent to approximately 69% of the odonatofauna in Brazil. The states with the greatest diversity were Amazonas (n=364), Pará (n=310) and Mato Grosso (n=285). The study also indicated a low level of knowledge of the Odonata order in the states of Tocantins and Maranhão, in addition to the area of ​​the Guianas shields, especially in the states of Amapá and Roraima. Carrying out new inventories and building catalogs is essential for understanding the biodiversity in this region, especially in areas with greater need.

Arisemus atlanticus Vilarinho, Araújo, Bravo & dos Santos sp. nov. and Arisemus benignoi Vilarinho, Araújo & Bravo sp. nov. are described from the Central Corridor of the Atlantic Forest. Currently, thirty-three species of the genus has been described from the Neotropical Region and only one from Brazil.

Inventariou-se a fauna de Chironomidae presente no sul do estado do Tocantins, Brasil. Foram realizadas seis coletas bimestrais em 45 locais de coleta com características lóticas no ano de 2006. O material foi coletado manualmente em diversos ambientes, onde verificou-se a abundância e a constância de Chironomidae. A partir do material coletado identificou-se 511 espécimes, montados em lâminas permanentes. Registramos a ocorrência de 30 gêneros distribuídos em três subfamílias (Chironominae, Orthocladiinae e Tanypodinae). Orthocladiinae foi a mais abundante constituindo 55% do total das larvas identificadas. Cricotopus foi o gênero mais abundante, representando 35,20% das larvas totais identificadas, seguido de Thienemanniella 14,85%, Rheotanytarsus 13,65% e Polypedilum 11,90%. A subfamília que apresentou o maior número de gêneros foi Chironominae com 18. O local de coleta mais abundante foi ENP1 com 70 espécimes, seguido de ENPN15 com 65. Os locais ENPN14 e ENP1 foram os que apresentaram o maior número de gêneros, com 11 em cada, ENP1 apresentou o maior número de gêneros acessórios com seis, seguido de EN147 com três gêneros acessórios. Neste estudo não observamos nenhum gênero constante. Todos os gêneros encontrados constituem novas ocorrências para o estado do Tocantins, sendo que 12, até o momento não possuem espécies descritas para o Brasil.Chironomidae (Diptera) to State of Tocantins, Brazil Abstract. Inventoried to Chironomidae fauna in the southern state of Tocantins, Brazil. Were carried out six collections bimonthly on 45 collection sites with lotic characteristics in 2006. The material was collected manually, at manual sampling in the various environments, where we verified abundance and constancy of Chironomidae. From the collected material was identified 511 specimens mounted on permanent slides. We recorded the occurrence of 30 genera distributed in three subfamilies (Chironominae, Orthocladiinae and Tanypodinae). Orthocladiinae was the most abundant constituting 55% of total identified larvae. Cricotopus was the most abundant, representing 35.20% of the total identified larvae, followed by Thienemanniella 14.85%, Rheotanytarsus 13.65% and Polypedilum 11.90%. The subfamily with the highest number of genera, was Chironominae with 18. The most abundant collection site, was ENP1 with 70 specimens, followed by ENPN15 with 65. The collection sites ENPN14 and ENP1 were those with the greatest number of genera, with 11 genera each, ENP1 had the largest number of accessories genera with six, followed by EN147 with three accessories genera. In this study we did not observed any constant genera. All genera found are new records for the state of Tocantins, and 12, have not yet described species for Brazil.

A list of species of butterflies from Serra da Jibóia, a mountainous massif in the Recôncavo of Bahia State, is presented based on specimens deposited in the entomological collection Prof. Johann Becker of Museu de Zoologia da Universidade Estadual de Feira de Santana (MZUEFS), results that should contribute with the increment of biodiversity knowledge of the butterfly fauna of the State. The list includes 140 species, 86 of which are new records to Bahia and a new species of genus of Perophthalma Westwood (Riodinidae). Nymphalidae was the richest family with 60 species. Most of the species listed in the present work has a widely geographic distribution in Brazil and occur in open areas.Borboletas (Lepidoptera: Papilionoidea e Hesperioidea) da Serra da Jibóia, Bahia, BrasilResumo. Uma lista das espécies de borboletas da Serra da Jibóia, um maciço montanhoso no Recôncavo baiano, é apresentada com base no exame da coleção entomológica Prof. Johann Becker do Museu de Zoologia da Universidade Estadual de Feira de Santana (MZUEFS), visando contribuir para o conhecimento da fauna de borboletas do estado da Bahia. A lista inclui 140 espécies, das quais 86 espécies são novos registros para o estado da Bahia e uma nova espécie do gênero of Perophthalma Westwood (Riodinidae). Nymphalidae foi a família de maior riqueza com 60 espécies. A maioria das espécies listadas possui ampla distribuição geográfica no Brasil e ocorre em áreas abertas.

The larva of the last instar of Phyllocycla gladiata (Hagen in Selys) is described and illustrated based in only one exuviae, collected at Camorim River, Jacarepaguá, Rio de Janeiro State, Brazil. Exuviae is deposited in the Museu Nacional (UFRJ), Rio de Janeiro, Brazil.Descrição do Último Ínstar Larvar de Phyllocycla gladiata (Hagen in Selys) (Anisoptera: Gomphidae)Resumo. A larva do último ínstar de Phyllocycla gladiata (Hagen in Selys) é descrita e ilustrada com base em uma exúvia coletada no Rio Camorim, Jacarepaguá, Rio de Janeiro, Brasil. A exúvia foi depositada no Museu Nacional (UFRJ), Rio de Janeiro, Brasil.

The association between the assassin bug Zelus versicolor (Herrich-Schäffer) (Hemiptera, Reduviidae, Harpactorinae) and the plant Bidens rubifolia Kunth (Asterales, Asteraceae) is related.Associação entre Zelus versicolor (Herrich-Schäffer) (Hemiptera, Reduviidae, Harpactorinae) e Bidens rubifolia Kunth (Asterales, Asteraceae) Resumo. Relata-se a associação entre o percevejo predador Zelus versicolor (Herrich-Schäffer) (Hemiptera, Reduviidae, Harpactorinae) e a planta Bidens rubifolia Kunth (Asterales, Asteraceae).

Taxonomic identification is essential in the field of forensic entomology. Insects are important in the decomposition of cadavers. The flies are generally attracted to cadavers and one of the most important contributions is to estimate the postmortem interval. The scanning electron microscopy (SEM), which allows rapid and accurate identification of different species of forensics flies, has been highlighted as it allows better visualization of the external morphology of immature and some adults. The purpose of this study was to examine in details the morphological aspects of sensilla on the antennae of female and male of Xanthacrona bipustulata Wulp using SEM, since many of them could not be observed just by the use of light microscopy.

Abstract. Cooling and freezing experiments were carried out at Oswaldo Cruz Foundation (Fiocruz / RJ). Flies colonies were established from specimens collected at the campus using a baited trap, as described for the species: Chrysomya putoria (Wiedemann), Chrysomya megacephala (Fabricius), Lucilia cuprina (Wiedemann), Musca domestica Linnaeus, Peckia ruficornis (Fabricius) and Peckia chrysostoma (Wiedemann). Prolonged exposures at lethal low temperatures can produce deleterious effects (including death) even if the insect does not freeze; during long-term exposure to low temperatures, the organisms may finally die from the exhaustion of energy reserves.Efeitos do resfriamento e congelamento no desenvolvimento de moscas de importância forenseResumo. Experimentos de resfriamento e congelamento foram realizados na Fundação Oswaldo Cruz (Fiocruz / RJ). Colônias de moscas foram estabelecidas a partir de espécimes coletados no campus usando uma armadilha com isca, conforme descrito para as espécies: Chrysomya putoria (Wiedemann), Chrysomya megacephala (Fabricius), Lucilia cuprina (Wiedemann), Musca domestica Linnaeus, Peckia ruficornis (Fabricius) e Peckia chrysostoma (Wiedemann). Exposições prolongadas em baixas temperaturas podem produzir efeitos deletérios (incluindo morte) mesmo se o inseto não congelar; durante a exposição prolongada a baixas temperaturas, os organismos podem morrer pelo esgotamento das reservas de energia.

O presente trabalho é parte de um projeto desenvolvido pelo Laboratório de Simulídeos e Oncocercose (LSO) do Instituto Oswaldo Cruz (IOC) na área sob influência da construção da Usina Hidrelétrica Peixe Angical (Enerpeixe) localizada no sul do estado do Tocantins nos municípios de Peixe, Paranã, São Salvador do Tocantins e Palmeirópolis. Foram registradas as espécies Corydalus batesii MacLachlane Corydalus nubilus Erichson (Megaloptera: Corydalidae) apartir de 31 exemplares imaturos analisados. No Brasil, até o momento só haviam sido assinaladas para os estados do Amazonas, Roraima, Rondônia e Pará. Esta é a primeira ocorrência de espécies de Megaloptera no estado do Tocantins.First Record of Corydalus batesii MacLachlan and Corydalus nubilus Erichson (Megaloptera: Corydalidae) in the State of Tocantins, from Simuliid (Diptera: Simuliidae) Breeding Sites at an area Affected by the Peixe Angical Hydroelectric Power Plant (Brazil)Abstract. In this work was to hold the inventory of entomofauna found at breeding site of simulids (Diptera: Simuliidae) in the area of construction of hydroelectric power Peixe-Angical (Enerpeixe) in study developed by the Laboratory of Simulídeos and Onchocerciasis (LSO) Instituto Oswaldo Cruz (IOC), which was held in south of the State of Tocantins in the municipalities of Peixe, Palmas, São Salvador and Palmeirópolis. Between entomofauna collected, it was possible to identify species Corydalus batesii MacLachlan and Corydalus nubilus Erichson. Thirty one immature specimens were examined. These species in Brazil had been marked only in the Amazon in states, Rondonia, Roraima and Pará. This study reports the first occurrence of species of Megaloptera at Tocantins State.