Hesperinus Walker, 1848, a member of Bibionidae (Diptera), is a Holarctic and Oriental genus. The genus has been reported from the Neotropical Region twice: i) Hesperinus conjungens Schiner, 1868, transferred to Plecia Wiedemann, 1828 by Hardy in 1967, and ii) additional specimens identified as Hesperinus sp. by Messias Carrera in 1944. In this study, we revisited the Carrera’s specimens, identifying them as Plecia sp. Additionally, we discussed the taxonomy of Plecia conjungens and compiled a list of articles that consider the species as Hesperinus.

Prosierola is characterized by having a pair of conspicuous anteromedial metapostnotal foveae on the metapectal-propodeal disc. Little is known about this genus because it is rarely sampled in collections. Therefore, the main goal of this contribution is to expand the knowledge of intraspecific morphological variations and geographical distribution of its species that occur in Brazil. We sorted material from the main collections and obtained 69 specimens of Prosierola nasalis (Westwood) recorded for the first time from Maranhão, Minas Gerais, Pará, Rio Grande do Norte and Rio Grande do Sul; one of Prosierola obliqua Evans recorded for the first time from Distrito Federal; five of Prosierola rotunda Schiffler & Azevedo recorded for the first time from Pará; and 13 of Prosierola rufescens Evans recorded for the first time from Brazil (Amazonas, Bahia, Espírito Santo, Minas Gerais). The mesoscuto-scutellar foveae placed on the dorsal surface of the mesoscutellum shown to be highly variable in size, distance, and shape at both the intra- and interspecific levels.

Lonomia Walker, 1855 is a genus of Lepidoptera belonging to the Saturniidae whose caterpillars have a defense system based on scoli connected to venom glands, which can cause medical accidents of envenomation, thereby making this genus medically important. In this work, Lonomia camox Lemaire, 1971, is recorded for the first time in Brazil, more specifically in the state of Amazonas. Photographs of male and female genitalia and an updated map with new occurrence records are presented.

A new species of Paratropis is herein described and illustrated, namely: Paratropis minusculus n. sp. based on males, females and immatures from Potaro-Siparuni, Guyana. Male e female of P. minusculus differ from those of all other species of the genus by having six eyes and by spinneret apical segment domed. In addition, we presented the first record of paratropidid species from Guyana, contribute to the knowledge of local biodiversity.

Two new species of the genus Omyomymar Schauff (Hymenoptera: Mymaridae), Omyomymar sudhiri sp. nov. Anwar & Zeya and Omyomymar supremus sp. nov. Anwar & Zeya are described from the Indian Himalayan regions. An identification key to Indian species is provided. All the previously recorded and described species of the genus are analyzed and discussed.

Abstract. The aim of this work is to present new records and distributional notes of Ephemeroptera species on Roraima states. Farrodes maculatus Domínguez, Molineri & Peters, 1996, Hermanellopsis incertans (Spieth, 1943) and Thraulodes marreroi Chacón, Segnini & Domínguez, 1999 are recorded for the first time in Brazil. Family Coryphoridae,  Callibaetis cruentus Cruz, Salles & Hamada, 2014, Callibaetis gelidus Cruz, Salles & Hamada, 2014, Campylocia demoulini Gonçalves & Salles, 2017, Coryphorus aquilus Peters, 1981, Fittkaulus cururuensis Savage, 1986, Fittkaulus maculatus Savage & Peters, 1978, Miroculis fittkaui Savage & Peters, 1983, and Simothraulopsis sabalo Kluge, 2007 are recorded for the first time in Roraima. The number of known species of Ephemeroptera in Roraima, after our study, has increased from 64 to 75. Novos registros de Ephemeroptera (Insecta) do Estado de Roraima, norte do Brasil Resumo. O objetivo deste trabalho é apresentar novos registros de espécies e notas sobre a distribuição geográfica de Ephemeroptera no Estado de Roraima. As espécies Farrodes maculatus Domínguez, Molineri & Peters, 1996, Hermanellopsis incertans (Spieth, 1943) e Thraulodes marreroi Chacón, Segnini & Domínguez, 1999 são registradas pela primeira vez no Brasil. A família Coryphoridae e as espécies Callibaetis cruentus Cruz, Salles & Hamada, 2014, Callibaetis gelidus Cruz, Salles & Hamada, 2014, Campylocia demoulini Gonçalves & Salles, 2017, Coryphorus aquilus Peters, 1981, Fittkaulus cururuensis Savage, 1986, Fittkaulus maculatus Savage & Peters, 1978, Miroculis fittkaui Savage & Peters, 1983 and Simothraulopsis sabalo Kluge, 2007 são registradas pela primeira vez no estado de Roraima. O número de espécies de Ephemeroptera com registros de ocorrência em Roraima é elevado de 64 a 75.

Abstract. A key to the species of Megaspilidae occurring in Neotropical Region is given, and information on the 20 species in four genera is provided, including data on their distribution and host associations. The Megaspilidae fauna is still poorly known in the Neotropical region and more studies are necessary. Chaves de identificação para as espécies de Megaspilidae (Hymenoptera: Ceraphronoidea) na Região Neotropical Resumo. É fornecida chave de identificação para os quatro gêneros e 20 espécies de Megaspilidae que ocorrem na Região Neotropical assim como dados sobre as suas distribuições e associações. A fauna de Megaspilidae da Região Neotropical é pouco conhecida e mais estudos são necessários.

The aim of this study was to provide an updated checklist of the species of Ophioninae reported for Brazil. Were catalogued 86 nominal species of Ophioninae, of which 61 of Enicospilus, nine of Thyreodon, five of Stauropoctonus, three of Ophiogastrella and of Ophion, two of Alophophion and of Rhynchophion and one of Prethophion. Enicospilus, to occur in 19 states and, is the most widely distributed genus. The present study reveals that knowledge of the fauna of Ophioninae is incipient in Brazil, much of the country remains subsampled and should have priority in future studies. Lista Anotada dos Ophioninae (Hymenoptera: Ichneumonidae) Brasileiros Resumo. O objetivo deste estudo foi apresentar uma lista atualizada das espécies de Ophioninae (Hymenoptera: Ichneumonidae) relatadas para o Brasil. Foram catalogadas 86 espécies, dentre as quais 61 de Enicospilus, nove de Thyreodon, cinco de Stauropoctonus, três de Ophiogastrella e de Ophion, duas de Alophophion e de Rhynchophion e uma de Prethophion. Enicospilus, por ocorrer em 19 estados, é o gênero com maior distribuição geográfica. O presente estudo revela que o conhecimento da fauna de Ophioninae no Brasil é incipiente, que grande parte do país continua subamostrada e deve ter prioridade em estudos futuros.

A Coleção Costa Lima do Instituto Oswaldo Cruz não recebe material novo para depósito, mas é extremamente diversificada e historicamente importante. Ela reúne um total de sessenta e seis holótipos, setenta e nove parátipos e nove síntipos da subordem Heteroptera, representando as famílias Cimicidae, Miridae, Polyctenidae, Reduviidae e Tingidae. Este relevante material é aqui compilado e apresentado pela primeira vez. List of the Type-Specimens of Heteroptera (Insecta: Hemiptera) in the Costa Lima Collection, Oswaldo Cruz Institute, Rio de Janeiro, Brazil Abstract. The Costa Lima Collection of the Oswaldo Cruz Institute does not receive new material to be deposited, but is extremely diversified and historically important. It gathers a total of sixty-six holotypes, seventy-nine paratypes and nine syntypes of the suborder Heteroptera, representing the families Cimicidae, Miridae, Polyctenidae, Reduviidae, and Tingidae. This relevant material is herein compiled and presented for the first time.

The aim of this study was to provide an updated checklist of the species of Ophioninae reported for Brazil. Were catalogued 86 nominal species of Ophioninae, of which 61 of Enicospilus, nine of Thyreodon, five of Stauropoctonus, three of Ophiogastrella and of Ophion, two of Alophophion and of Rhynchophion and one of Prethophion. Enicospilus, to occur in 19 states and, is the most widely distributed genus. The present study reveals that knowledge of the fauna of Ophioninae is incipient in Brazil, much of the country remains subsampled and should have priority in future studies. Lista Anotada dos Ophioninae (Hymenoptera: Ichneumonidae) Brasileiros Resumo. O objetivo deste estudo foi apresentar uma lista atualizada das espécies de Ophioninae (Hymenoptera: Ichneumonidae) relatadas para o Brasil. Foram catalogadas 86 espécies, dentre as quais 61 de Enicospilus, nove de Thyreodon, cinco de Stauropoctonus, três de Ophiogastrella e de Ophion, duas de Alophophion e de Rhynchophion e uma de Prethophion. Enicospilus, por ocorrer em 19 estados, é o gênero com maior distribuição geográfica. O presente estudo revela que o conhecimento da fauna de Ophioninae no Brasil é incipiente, que grande parte do país continua subamostrada e deve ter prioridade em estudos futuros.