Nephochaetopteryx cyaneiventris Lopes, 1936

Nephochaetopterix cyaneiventris Lopes, 1936b: 86 .

Sarcohelicobia elegans Blanchard, 1939: 795 . Syn. nov.

Distribution: Neotropical – Argentina (Buenos Aires, Misiones), Brazil (São Paulo).

Type material examined: Holotype Ψof Sarcohelicobia elegans Blanchard, Misiones, 1936, Bosq leg.

Other material studied: Buenos Aires: 1 ɗ, 2 Ψ Reserva Ecológica Costanera Sur, Ciud. Aut. Buenos Aires, III.2004 on faeces, Mulieri leg. (ANLIS); 3 ɗ Reserva Ecológica Costanera Sur, Ciud. Aut. Buenos Aires, III.2004, Mariluis leg. (ANLIS); 1 Ψ Reserva Ecológica Costanera Sur, Ciud. Aut. Buenos Aires, 24.V.2007 on faeces, Patitucci leg. (ANLIS).

Remarks: The identity of this species was determined in two ways. Male specimens obtained by authors were dissected. In all cases the adeagal morphology agrees with that of N. cyaneiventris (Lopes 1936b) . In addition, the examination of the terminalia of females captured by authors and the female holotype of Sarcohelicobia elegans Blanchard deposited in MACN, showed similar morphology of sternites 6, 7, and 8 with descriptions made by Mello-Patiu & Santos (2001) for N. cyaneiventris .

Biology: Mulieri et al. (2008) commented on the strong association of this species with woodlands on the coastline of Río de la Plata, Buenos Aires. We captured this species on faeces.