Taxonomia de Elmidae (Insecta, Coleoptera) do Município de Presidente Figueiredo, Amazonas, Brasil

Abstract

The Municipality of Presidente Figueiredo is known by its exuberant streams, that are an important touristical attractive and home of a rich fauna of aquatic insects. Elmidae (Insecta: Coleoptera) is an abundant family in Presidente Figueiredo streams, due to their need to inhabit lotic and non-impacted environments. Despite of that, until now, any study concerning the Elmidae community from Presidente Figueiredo had been done. The aim of this study was to inventory the taxa, describe new species and prepare taxonomic keys for genus level of Presidente Figueiredo’s Elmidae. The study was based upon material collected from eight localities. Were foud 17 genera and 38 species, 10 of them were new species (Heterelmis browni sp. nov., Hexacylloepus hintoni sp. nov., Neoelmis variecarinata sp. nov., Pilielmis figueirensis sp. nov., Portelmis paulicruzi sp. nov., Stegoelmis figueirensis sp. nov., Stenhelmoides longifibulus sp. nov., Stenhelmoides pilitarsus sp. nov., Stenhelmoides spangleri sp. nov. and Stenhelmoides spinipenis sp. nov.). Separete taxonomic keys were made for larvae and adults. The genus Portelmis Sanderson, 1953 was registered for the first time for Brazil. Hexacylloepus Hinton, 1940 was registered for the first time for the Amazonas. Six of the 28 known species were registered for the first time for Brasil (Gyrelmis obesa Hinton, 1940, Hexacylloepus heterelmoides Hinton, 1939, Hintonelmis delevei Hinton, 1971, Neoelmis opis Hinton, 1972, Stegoelmis stictoides Spangler, 1990 and Stenhelmoides bebei Spangler e Perkins, 1989) and five registered for the first time for the Amazonas (Gyrelmis maculata Hinton, 1940, Gyrelmis nublia Hinton, 1940, Neoelmis thyas Hinton, 1972, Pilielmis halia Hinton, 1971 and Xenelmis granata (Grouvelle, 1888). Also, the male of Neoelmis thyas Hinton, 1972 was described for the first time.