gracillis Williston, 1888: 249 . Type locality: Brazil, Mato Grosso, Chapada. Distr.— Brazil (Mato Grosso, Minas Gerais, Roraima, Santa Catarina, São Paulo), Colombia (Rio Raposo), Ecuador (Pastaza (Napo River), (Napo (Coca, Napo River)), Peru (Madre de Dios (Avispas), Cuzco (Quincemil), (Monson Valley, Tingo Maria)), Venezuela (Caracas). HT F [AMNH]. Ref.— James & McFadden, 1971: 27 (rev. of genus, desc of new species, key to species); Rafael, 1991: 331 (checklist); Iide & Pujol-Luz, 1999: 1–7 (redescription); Fontenelle et al., 2012.

Material examined. COLOMBIA: Rio Raposo, v.1964, V.H. Lee. 1 M [USNM].