Trichomyia hileiana Araújo & Bravo sp. nov.

(Figs. 27A –H)

Diagnosis. M2 not reaching M1; bifurcated basal expansion on gonocoxite; two pairs of arms of gonocoxite, the dorsal larger and broader than the ventral, both with bristles; ejaculatory apodeme 0.8 times the length of gonostylus; cercus with an elongated projection with two apical bristles.

Description. Male. Head subcircular in frontal view. Antenna with 13 flagellomeres; cylindrical scape; subquadrangular pedicel; basal flagellomeres pyriform and eccentric (Fig. 27A); ascoids 1.2 times as long as a flagellomere; 13th flagellomere subcylindrical with terminal apiculus separated by a suture (Fig. 27F). Palpus three segmented; first segment with sensilla in depressed pit on medial surface; palpus formula 1.0:0.6:0.5 (Fig. 27B). Wing. M2 not reaching M1; R4+5 incomplete at base; r-m and m-cu absent (Fig. 27C). Male terminalia: Hypandrium and gonocoxites fused with bifurcated basal expansion and lateroposterior bristles. Two pairs of arms of gonocoxites, the dorsal larger and broader than the ventral and both with bristles (Figs. 27D, 27 H). Gonostylus slightly sclerotized, articulated ventrally to gonocoxite, bare, truncated. Aedeagal complex with one pair of Hshaped fused projections. Aedeagus ending at midline of projections in the aedeagal complex (Fig. 27 H). Ejaculatory apodeme 0.8 times the length of gonostylus. Epandrium longer than wide, subcircular. Cercus digitiform with an elongated projection with two apical bristles (Figs. 27D, 27E, 27G). Hypoproct with apical setulae (Fig. 27G).

Female. Unknown.

Material examined. Brazil, Amazonas, Presidente Figueiredo, Pitinga, 04.XII.1998, holotype ♂, RQ, LMC leg. (MZFS); 37 paratypes: 1 ♂, same locality as holotype, 15.XII.1998, RR, LMS leg. (INPA); 2 ♂, same locality as holotype, 06.X.1998, without name of collector (MZFS); 3 ♂, same locality as holotype, Km 75, 25– 27.VII.1997, without name of collector (INPA); 22 ♂, same locality, date and colectors as holotype (MZFS); 3 ♂, Amazonas, Manacapuru, Cajatuba, Km 69/3, 9.X.1998, without name of collector (INPA); 1 ♂, Pará, Santarém, Km13, N.S. Nazaré, Com. Santa Maria, 27.XI.1998, FF, RDN cols (MZFS); 3 ♂, Pará, Santarém, Estrada para Alter do Chão, Jurupari, Km 1315, 25.XI.1998, RF, RAN, FLS cols (MZFS); 1 ♂, Roraima, Pitinga, 13– 15.XII.1997, RQ, RN, PE cols (MZFS); 1 ♂, Amazonas, Manacapuru, Estrada do Cajatuba, Sitio do Sr. Simplicio, 24–25.IV.1998, without name of collector (INPA);

Etymology. The epithet hileiana refers to the erudite term, given by Alexander Humboldt to the old province which included the forests of the Amazon.

Distribution. Brazil—Amazonas, Pará, Roraima.