Taxonomia de Plecoptera (insecta) de Taquaruçu, Tocantins

Abstract

Plecoptera is a small order of aquatic insects with about 3,700 described species distributed worldwide in 16 families. In Brazil only two families, Gripopterygidae and Perlidae, are registered, both with four genera each and 184 species. These insects play a great ecological role and are largely used as stream bioindicators. In the present work, we studied the plecopterofauna from the district of Taquaruçú do Porto, in Palmas – TO, aiming to contribute to the knowledge of stoneflies for Tocantins State, since there is no formal record for the order in this region. The examined material was collected between August and November in 2017, and in March 2018; the material already deposited in the Coleção de Entomologia da UFT (CEUFT) was also studied. The adults were captured with light traps in vegetation from the banks of streams and we collected nymphs inside the streams with the aid of D-nets. As result, three genera of Perlidae, Anacroneuria, Macrogynoplax and Kempnyia, were reported. Furthermore, we described a new species of Anacroneuria and two nymphs of Macrogynoplax matogrossensis and Kempnyia goiana.