This paper describes the composition and distribution of Anisoptera and Zygoptera (Odonata) species of the upper Rio das Velhas in the municipality of Ouro Preto, Minas Gerais State, Brazil. A total of 727 specimens of 40 species were collected near water bodies over a period of 23 months between 2015 and 2017. The families with greatest species richness were Libellulidae (13 species), Coenagrionidae (12 species) and Heteragrionidae and Aeshnidae (4 species each). Notable among the species collected were Perilestes fragilis Hagen in Selys, 1862, inhabiting well-preserved forests, Minagrion waltheri Santos, 1965, pertaining a endemic genus of Brazil and the recently described Heteragrion cauei Ávila-Júnior et al., 2017, and three species recorded for the first time for the state: Elasmothemis alcebiadesi (Santos, 1945); Erythrodiplax melanica Borror, 1942 and Erythrodiplax acantha Borror, 1942, the latter is considered Critically Endangered (CR) by the International Union for Conservation of Nature's (IUCN) Red List.
Microvelia joceliae Magalhães & Moreira, sp. nov. is described and illustrated based on material from Parque Natural Municipal das Andorinhas, Minas Gerais State, in southeastern Brazil. The new species can be distinguished from congeners occurring in the region by the pronotum of the apterous form covering almost the entire thorax dorsally, proepisternum with black denticles, male abdominal segments V–VII ventrally depressed, shape of the asymmetrical parameres, and female abdominal laterotergites reflected over the mediotergites and almost touching over segments V–VII.
We present a survey of the semiaquatic bugs (Insecta, Hemiptera, Heteroptera, Gerromorpha) from Parque Natural Municipal das Andorinhas, Ouro Preto, Minas Gerais State, southeastern Brazil. Thirteen species are recorded from the area based on regular collection events, namely Brachymetra albinervus (Amyot & Serville, 1843); Cylindrostethus palmaris Drake & Harris, 1934; Halobatopsis delectus Drake & Harris, 1941; Ha. platensis (Berg, 1879); Metrobates plaumanni genikos Nieser, 1993; Neogerris kontos Nieser, 1994 (Gerridae); Hydrometra fruhstorferi Hungerford & Evans, 1934 (Hydrometridae); Platyvelia brachialis (Stål, 1860); Rhagovelia macta Drake & Carvalho, 1955; R. robusta Gould, 1931; R. sbolos Nieser & Melo, 1997; R. triangula Drake, 1953; and R. trianguloides Nieser & Melo, 1997 (Veliidae).
We present a survey of the semiaquatic bugs (Insecta, Hemiptera, Heteroptera, Gerromorpha) from Parque Natural Municipal das Andorinhas, Ouro Preto, Minas Gerais State, southeastern Brazil. Thirteen species are recorded from the area based on regular collection events, namely Brachymetra albinervus (Amyot & Serville, 1843); Cylindrostethus palmaris Drake & Harris, 1934; Halobatopsis delectus Drake & Harris, 1941; Ha. platensis (Berg, 1879); Metrobates plaumanni genikos Nieser, 1993; Neogerris kontos Nieser, 1994 (Gerridae); Hydrometra fruhstorferi Hungerford & Evans, 1934 (Hydrometridae); Platyvelia brachialis (Stål, 1860); Rhagovelia macta Drake & Carvalho, 1955; R. robusta Gould, 1931; R. sbolos Nieser & Melo, 1997; R. triangula Drake, 1953; and R. trianguloides Nieser & Melo, 1997 (Veliidae).
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