In the current study we add new records of 29 species of Caddisflies (Trichoptera) from eight different Brazilian states and report Leptonema sancticaroli Flint, McAlpine and Ross, 1987, Flintiella pizotensis Harris, Flint and Holzenthal, 2002, and Oecetis connata Flint, 1974 for the first time in Brazil.

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which it shares segment IX ventrally with a posteromesal projection, unique to these species. With the exception of C. meloi, these species also share the paired elongate, curved, ventrally directed dorsomedian processes on segment IX. The new species can be distinguished by the long posterior lobes and dorsomedian processes of segment IX diverging on apical third. The well-developed phallotremal sclerite of C. sana, with its rather conspicuous shape, is also unique.

Three new species of Hydroptilidae are herein described and illustrated from specimens collected with light traps in the states of Pará and Rio de Janeiro, Brazil. Flintiella carajas sp. nov., from Floresta Nacional de Carajás, shares with F. panamensis Harris, Flint & Holzenthal, 2002, F. tamaulipasa Harris, Flint & Holzenthal, 2002, F. yanamona Harris, Flint & Holzenthal, 2002, and F. manauara Santos & Nessimian, 2009 a deeply incised phallic apex. However, males can be distinguished by a ventromesal process on segment VII, by lacking dorsal hooked processes on segment IX, by the elongate subgenital plate, and by the lateral lobes of the phallic apex slightly curved laterad. Rhyacopsyche diacantha sp. nov. is closely related to R. yatay Angrisano, 1989 and R. garuhape Angrisano & Sganga, 2009. All three species have complex inferior appendages with ventral and dorsal lobes. The new species is distinguished by the male genitalia with segment X two times longer than broad, inferior appendages with the apices obliquely truncate, and a bilobed dorsal lobe on the inferior appendages. Features of the male genitalia of Rhyacopsyche angra sp. nov., R. hagenii and R. dikrosa are similar, but the first species can be distinguished by the inferior appendages truncate apically and produced laterad, and a phallus with the internal tubule hooked subapically and apically

Philopotamidae is a large caddisfly family with 20 extant genera comprising about 1 000 described species worldwide. Alterosa contains 22 described species distributed in South and Southeastern Brazil. Adults of the genus are very similar in general structure, but are remarkable for their wide variation in male genitalic morphology. The specimens were collected with Pennsylvania light traps and preserved in 80% ethanol. Alterosa nessimiani sp. nov. is described and figured from male specimens collected in streams of Rio de Janeiro state, Southeastern Brazil. The new species is closely related to A. jordaensis Blahnik 2005, from which it can be distinguished by the presence of two spines on the intermediate appendages and by the shape of tergum x. Rev. Biol. Trop. 60 (2): 577-580. Epub 2012 June 01.