Two new species of Flintiella Angrisano 1995 (Trichoptera: Hydroptilidae: Stactobiini) from northern Brazil.

Two new species of Flintiella Angrisano 1995 are described and illustrated from specimens collected with light traps in the states of Pará and Roraima, northern Brazil. Flintiella serrana sp. nov. can be distinguished from all other species in the genus by the subgenital plate with incised apex, and two pairs of ventral processes. Flintiella triaena sp. nov. is distinctive with no clearly similar congeners and can be distinguished from all known species in the genus by the trident-like subgenital plate in ventral view. Additionally, we record the genus Flintiella for the first time in Roraima State.

The genus Neotrichia Morton 1905 (Insecta: Trichoptera: Hydroptilidae) in Roraima state, Brazil: New records and description of seven new species.

Seven new species of Neotrichia Morton 1905 from Brazil are described: Neotrichia caboca sp. nov., Neotrichia capitiana sp. nov., Neotrichia cruviana sp. nov., Neotrichia damurida sp. nov., Neotrichia macuxi sp. nov., Neotrichia makunaima sp. nov., and Neotrichia matula sp. nov. Illustrations of male genitalia are provided with each description. New country records for Brazil of two additional species, Neotrichia tauricornis Malicky 1980 and Neotrichia parabullata Harris Armitage 2015 are also provided.

Two new species of Hydroptilidae (Insecta: Trichoptera) from the Serra dos Carajás, Pará state, northern Brazil.

Two new species of Hydroptilidae from Pará, Brazil, are described and illustrated: Costatrichia inaequalis sp. nov. is a distinctive species characterized principally by the lateral processes on tergum IX rounded and each bearing a long dorsal seta. Oxyethira carajas sp. nov. is characterized by the inferior appendages fused, incised mesally, narrowing posterolaterally, and each bearing a stout apical seta and having its ventral process blade-like. New distributional records are given for a species of Neotrichia for which the name is unpublished.