Taxonomia de Trichoptera Kirby, 1813 (Insecta) da Floresta Nacional do Tapajós e adjacências no Pará, Brasil

Abstract

Trichoptera is an order of aquatic insects, holometabolous, present in most aquatic environments, has a high diversity due to the ecological specializations that they present. The growth of studies on the diversity of the group has been increasing over the years, however, in places and places more farther from access the study is scarce as the case of the Conservation Unit, FLONA of Tapajós, that despite the 30 years of creation, few researches were carried out few research in the area of ecology and distribution of fauna and when it comes to insects the number is even smaller. The study was done with the objective of knowing the fauna of Trichoptera in the FLONA region and its surroundings. Material from 20 collection points was used in 2014 and 2016. There were 1,912 adult individuals of Trichoptera, 51 species were registered, distributed in 6 genera and 10 families. Before this work, 77 species were known for the state of Pará, that number was increased to 106 the registration number for the region. Six new species were described Cernotina cornicula sp. nov., Cernotina mocoronga sp. nov., Cernotina falciforme sp. nov., Cernotina nissimiani sp. nov., Cernotina spinosa sp. nov. (Polycentropodidae) e Xiphocentron paraense sp. nov. (Xiphocentronidae). The most representative families in the Tapajós FLONA and adjacencies were, Hydropsychidae, with 5 genera and 21 species, followed by Polycentropodity, with 4 genera and 10 species and Philopotamidae, with only one genus, but with 7 species found also presenting a high abundance in the study area.