Pterodontia Gray, 1832

Gillung, Jéssica Paula & Carvalho, Claudio José Barros De, 2009, Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera, Zootaxa 2175, pp. 29-41 : 39-40

Pterodontia Gray, 1832

( Figs. 18 , 20 )

Pterodontia Gray, 1832: 779 . Type-species: Pterodontia flavipes Gray, 1832 .

Diagnosis. Head extremely small compared to the thorax, almost completely occupied by the eyes. Eyes black, with dense pilosity, completely holoptic ( Fig. 18 ). Antenna very small, inserted on the lower part of the head, just above proboscis; scape cylindrical, pedicel rounded and flagellum varying in shape, with one or more apical seta and shorter than the other two joints ( Fig. 18 ). Proboscis short, in the lower part of the head ( Fig. 18 ). Wing hyaline; vein r-m absent; veins R1, R2+3 and R4+5 simple, without bifurcation, posterior cubital cell closed ( Fig. 20 ). Wing with a spur in the intersection between costal and subcostal veins in the male ( Fig. 20 ).

References. Cole (1919), Paramonov (1957).

Brazilian species. P. flavonigra (Carrera, 1947) [ Brazil, Santa Catarina, Rio Caçador (type-locality)], P. virmondii ( Erichson, 1840) [ Brazil].

Figures

FIGURE 20. Wing, dorsal view, Pterodontia sp. 2.

FIGURES 18, 19. 19. Head, lateral view, Pterodontia sp. 1; 19. Head, lateral view, Ocnaea sp. 1.