Gerromorpha (Insecta, Hemiptera, Heteroptera) from eastern Maranhão state, northeastern Brazil

Abstract

The infraorder Gerromorpha (Insecta, Hemiptera, Heteroptera) comprises semiaquatic bugs, most of which live on the water surface, among floating plants or at the margins of water bodies. We made collections of these insects in the Itapecuru and Parnaíba hydrographical basins in eastern Maranhão state, northeastern Brazil, from January to December 2019. Based on the material obtained, we present new records for 23 species, 20 of which are recorded for the first time from Maranhão state.

Dipsas indica (Laurenti, 1768) (Serpentes, Colubridae, Dipsandinae): additional country record, list of voucher specimens, and discussion on distribution in Bolivia

“…Halobatopsis platensis is much more widespread than the previous species, ranging from northeastern Brazil (Rodrigues et al 2012(Rodrigues et al , 2021bMoreira et al 2016;Franco et al 2020Franco et al , 2021 westward to Peru (Floriano et al 2017), and southward to Argentina and Uruguay (Berg 1879;Ruffinelli and Pirán 1959). It is herein recorded from Ouro Preto for the first time, which narrows a gap on the southeastern region of the state.…”

Heterópteros aquáticos e semiaquáticos no sudoeste amazônico e o seu papel no biomonitoramento aquático

“…Um dos grandes desafios para o biomonitoramento aquático é seleção de bons bioindicadores. Em geral, as pesquisas com insetos aquáticos apresentam muitas espécies, mas nem sempre é possível identificá-las até o nível de espécie, em virtude de limitações relacionadas à descrição de formas imaturas ou mesmo pela carência de taxonomistas na Amazônia Sul-ocidental (3,8,9,14,32,35,39,(41)(42)(43).…”

Semiaquatic bugs (Hemiptera, Heteroptera, Gerromorpha) from Rio Grande do Sul, southern Brazil

“…So far, 238 species of Gerromorpha have been recorded from Brazil belonging to the families Gerridae (57 species), Hebridae (9), Hydrometridae (14), Mesoveliidae (7), and Veliidae (151) (Moreira 2021a(Moreira , 2021b(Moreira , 2021c(Moreira , 2021d. Historically, the northern and southeastern regions of the country were the best explored (Moreira et al 2011a), but this has been changing in recent years due to surveys performed by local researchers, especially in the northeastern region (e.g., Franco et al 2020Franco et al , 2021Rodrigues et al 2021).…”