Filling distribution gaps and honoring great taxonomist mentors: three new species of the microcaddisfly Ochrotrichia Mosely, 1934 (Trichoptera: Hydroptilidae) from the Brazilian Cerrado and a checklist from Brazil

ABSTRACT Sixteen species of the microcaddisfly Ochrotrichia Mosely, 1934 (Hydroptilidae) have been recorded so far in Brazil, mainly distributed in the Atlantic Forest of southeastern Brazil. In order to reduce the Linnean and Wallacean shortfalls for the Ochrotrichia Brazilian fauna, we diagnose, describe, and illustrate three new species based on adult males from three protected and preserved areas of the Cerrado biome of Federal District (Central-West region), Minas Gerais (Southeast region) and Tocantins (North region) states; all of them named in honor of three great Brazilian entomologists viz., Ochrotrichia froehlichi sp. nov., Ochrotrichia machadoi sp. nov. and Ochrotrichia nessimiani sp. nov. They can be recognized mainly by the morphology of the tergum X, number, and position of the spine-like setae of the inferior appendages. This contribution represents the first record of Ochrotrichia for the Central-West region, increasing the number of species of this genus in Cerrado biome from one to four, and is the first report of a microcaddisfly for the Federal District. In addition, the genus is reported for the first time from Paraná, São Francisco, and Tocantins hydrographic basins. Finally, we provide a checklist of the Ochrotrichia species from Brazil.

Larvas de Synoestropsis sp. (Trichoptera: Hydropsychidae) são predadoras? / Are Synoestropsis sp. larvae (Trichoptera: Hydropsychidae) predators?

Características morfológicas sugerem que larvas de Synoestropsis sp. (Trichoptera: Hydropsychidae) são predadoras. Examinamos o conteúdo estomacal de 48 larvas de Synoestropsis sp. coletadas na época de estiagem de quatro rios de cerrado (Arraia, Cauamé, Cotingo e Ereu) do estado de Roraima para avaliar o hábito alimentar de larvas desse gênero. A alta freqüência de itens animais no conteúdo estomacal das larvas corrobora a hipótese de que esta espécie é predadora.

Morphological characteristics of the Synoestropsis sp. larvae (Trichoptera: Hydropsychidae) suggests that this species is a predator. We examined the stomach contents of 48 Synoestropsis sp. larvae collected in four savannah rivers (Arraia, Cauamé, Cotingo and Ereu) in the state of Roraima during the dry season to evaluate their feeding habits. The high frequency of animal items in the stomach content confirmed the hypothesis that this specie is a predator.

Chaves de identificacão de larvas para famílias e gêneros de Trichoptera ( Insecta ) da Amazônia Central, Brasil / Identification key to families and genera of larvae of Trichoptera from Central Amazonia, Brazil

Chaves de identificacão de larvas aos níveis de família e gênero de Trichoptera da Amazônia Central são apresentadas.