Trichomyia atlantica Araújo & Bravo, 2012

Araújo, Maíra Xavier & Bravo, Freddy, 2012, Taxonomy of Neotropical Trichomyia (Septemtrichomyia) Bravo (Diptera, Psychodidae, Trichomyiinae) with descriptions of five new species, Zootaxa 3547, pp. 24-34 : 27-28

Trichomyia atlantica Araújo & Bravo sp. nov.

( Figs. 1–8 )

Diagnosis. Elongate bristles on tergum 7 with straight apices. Gonocoxite with posterior arm curved to the midline, apically pilose with row of 12–13 small rode-like sensilla. One pair of parameres, in dorsal view digitiform, sclerotized, ending in a point. Ejaculatory apodeme 1.2 times the length of the paramere.

Description. Male. Head subcircular. Antenna incomplete in the specimens studied; scape longer than pedicel; basal flagellomeres pyriform and eccentric; ascoid 1.3 times the length of flagellomere ( Fig. 1 ). Palpus formula 1.0:0.7:0.7 ( Fig. 2 ). Wing ( Fig. 3 ): Sc complete; R5 complete at base; r-m and m-cu absent. Elongate bristles of tergum 7 with curved apices ( Fig. 4 ). Male terminalia: Hypandrium fused with gonocoxite ( Fig. 5 ). Gonocoxite with posterior arm curved to the midline, apex acute, apically pilose with row of 12–13 small, rod-like setae ( Figs. 5, 6 ). Gonostylus digitiform with apex curved upward ( Figs. 5, 7 ). One pair of parameres present, in dorsal view thin, digitiform, sclerotized, with acute apex ( Figs. 5, 7 ); arrow-shaped in lateral view ( Fig. 7 ). Aedeagus short, approximately 0.75 times the length of parameres ( Fig. 5 ). Aedeagal apodeme 1.2 times the length of parameres. ( Figs. 5, 7 ). Epandrium wider than long ( Fig. 8 ). Cercus pilose, elliptical in ventral view ( Figs. 8 ). Epipropoct shorter than hypropoct, both with apical micropilosity ( Fig. 8 ).

Material examined. Holotype 3, BRAZIL, Bahia, Ituberá, 12.VI.2002, F. Bravo leg. ( MZFS); 13 paratypes: 1 3, same locality, date and collector as holotype ( MZFS); 6 3, same locality and collector as holotype, 01.VII.2003 ( MZFS); 4 3, Bahia, Cachoeira, Fazenda Villa Rial, 20.VII.2004, F. Bravo leg. ( MZFS); 1 3, Bahia, Cachoeira, 24.V.2004, F. Bravo leg. ( MZFS); 1 3, Bahia, Porto Seguro, Estação Vera Cruz, 05.XII. 2002, F. Bravo leg. ( MZFS).

Distribution. Known from Cachoeira and Ituberá in Bahia, Brazil.

Etymology. atlantica was based on the Atlantic forest; the Brazilian biome where this species was collected.

Comments. The male terminalia of T. atlantica and T. bou have similar posterior gonocoxite arms with acute apices. This character is not present in any of the other species of Trichomyia . T. atlantica and T. bou can be differentiated by comparison of the ejaculatory apodeme which is shorter in T. atlantica , and by the shape of paramere, with a short arm in T. atlantica and a long arm in T. bou .

Figures

FIGURES 1 – 8. Trichomyia atlantica sp. nov. 1. Scape, pedicel and basal flagellomeres; 2. Palpus; 3. Right wing; 4. Elongate bristles on tergum 7 (paratype); 5. Male terminalia, dorsal; 6. Arm of gonocoxite 7. Male terminalia, lateral; 8. Cerci, epandrium, hypropoct.