A new species of Chimarra Stephens 1829 (Trichoptera: Philopotamidae) and new caddisfly records from Rio Grande do Norte State, Brazil.

Trichoptera is the largest order of exclusively aquatic insects, comprising more than 16,000 described species with cosmopolitan distribution. There are about 800 species recorded from Brazil so far, mostly from the North, Southeast, and South regions. In Northeastern Brazil, the state of Rio Grande do Norte has only one Trichoptera species recorded so far (Oecetis excisa).

Two new species of the genus Centromacronema Ulmer 1905 (Hydropsychidae: Macronematinae) from Brazil.

Centromacronema is an endemic genus from the Neotropics, with distribution ranging from Mexico to southern Brazil. The genus comprises 15 described species, but only two of them have been recorded in Brazil: Centromacronema               auripenne (Rambur 1842) and C. obscurum (Ulmer 1905).

A new species of Neoathripsodes Holzenthal, 1989 (Trichoptera: Leptoceridae) with new generic and species records in Bahia State, Brazil.

Trichoptera is the most species-rich clade of exclusively aquatic insects. In Brazil, 645 species have been recorded, distributed in 70 genera and 16 families. In the Northeast Region of Brazil, 85 species have been recorded, including 56 in Bahia State.