Trichomyia rondonensis Araújo & Bravo sp. nov.

(Figs. 5A–E)

Diagnosis. Apex of Sc unsclerotized; inflated sclerotized gonostylus; two pairs of subtriangular projections in the aedeagal complex, which together form a sheath covering the other two. Aedeagus bifid, divergent; ejaculatory apodeme 1.5 times the length of gonostylus.

Description. Male. Head subcircular in frontal view. Antenna incomplete in the studied specimens; scape subcylindrical and pedicel subspherical; flagellomeres pyriform; ascoids 1.2 times the length of flagellomere (Fig. 5A). Palpus formula 1.0:0.6:0.7 (Fig. 5B). Wing. Apex of Sc unsclerotized, R4+5 complete at base; M2 not reaching M1, M3 with base unsclerotized, r-m and m-cu absent (Fig. 5C). Male terminalia: Hypandrium fused with gonocoxites, with medial posterior expansion. Arm of gonocoxite pilose with bristles along the medial margin. Gonostylus inflated, slightly trifurcate, sclerotized, articulated ventrally at gonocoxite. Two pairs of projections in the aedeagal complex, the dorsal subtriangular, fused, membranous, covering the aedeagus and the other projections in the aedeagal complex, divergent. Aedeagus bifid, divergent. Ejaculatory apodeme 1.5 times the length of gonostylus (Fig. 5D). Epandrium pilose, apically wider. Cercus pilose, subtriangular in ventral view. Hypoproct with apical micropilosity (Fig. 5E).

Female. Unknown.

Material examined. Brazil, Rondônia, Caucalândia, 200km SSE of Porto Velho, 25.V–06.VI.98, holotype ♂, L.W. Quate leg. (MZFS); 1 paratype ♂, same locality, date and colector as holotype (MZFS).

Etymology. The epithet rondonensis is based on the type locality.

Distribution. Brazil—Rondônia