Trichomyia dentata Araújo & Bravo sp. nov.

(Figs. 8A–G)

Diagnosis. Expansion medial of gonocoxite slowly bifurcated; one pair of parameres with apical margin dentiform; one pair of projections in the aedeagal complex curved, with two medial expansions; ejaculatory apodeme short, 0.7 times the length of gonostylus; hypoproct with apical micropilosity and setulae in the medial and basal surface.

Description. Male. Head subcircular in frontal view. Antenna incomplete in the studied specimens; scape subtriangular; pedicel subcylindrical; flagellomeres pyriform (Fig. 8A); ascoids 1.1 times as long as the length of flagellomere (Fig. 8B). Palpus three segmented; first segment with sensilla in depressed pit on medial surface; palpus formula 1.0:0.5:0.5 (Fig. 8C). Wing. R4+5 with base unsclerotized; r-m unsclerotized and m-cu absent (Fig. 8D). Male terminalia: Hypandrium and gonocoxites fused with an expansion medial slowly bifurcated; one pair of lateral parameres with apical sinuous margin (Fig. 8E). Arm of gonocoxite curved with apicolateral bristles. Gonostylus slightly sclerotized, articulated ventrally to gonocoxite, bare, curved and truncated. Presence of one pair of curved projections in the aedeagal complex with two medial expansions. Aedeagus ending at base of projections in the aedeagal complex. Ejaculatory apodeme short, 0.7 times the length of gonostylus (Fig. 8G). Epandrium longer than wide. Cercus piriform and pilose. Hypoproct with apical micropilosity and setulae in the medial and basal surface (Fig. 8F).

Female. Unknown.

Material examined. Brazil, Pará, Novo Repartimento, Vic. Bandeirante, Ramal dos sem terra, 22.VIII.1998, holotype ♂, without name of collector (MZFS); 4 paratypes: 3 ♂, Amazonas, Manacapuru, Km75, 25– 27.VII.1997, without name of collector (MZFS); 1 ♂, Amazonas, Manacapuru, Cajatuba, Km 69/3, 9.X.1998, without name of collector (INPA).

Etymology. The epithet refers to the dentate appearance of parameres.

Distribution. Brazil—Amazonas, Pará.