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Revista de Biología Tropical
On-line version ISSN 0034-7744Print version ISSN 0034-7744
Abstract
ABRANTES JARDIM, Gabriela and LOURENCO DUMAS, Leandro. A new species of the genus Alterosa (Trichoptera: Philopotaminae) from Southeastern Brazil. Rev. biol. trop [online]. 2012, vol.60, n.2, pp.577-580. ISSN 0034-7744.
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.
Keywords : Alterosa nessimiani; Atlantic Forest; caddisfly; Neotropical region; taxonomy.