Revisão taxonômica das espécies amazônicas do gênero Elaphropeza Macquart, 1827(Diptera: Hybotidae, Tachydromiinae)

Abstract

The genus Elaphropeza Macquart (Diptera: Hybotidae, Tachydromiinae) is compound of small flies, usually yellow, with 148 species described distributed circumtropically. It can be separated from the other Drapetini by the gena not developed, conical flagellum, anepisternum lacking hairs and bm cell longer than br. In Brazil they are recorded just for the regions South, Southeast and Northeast. In Amazonia there are three species described from British Guiana, one from Peru and another one from Bolivia, the latter two records relating to adjacent areas of biome. The genus Elaphropeza is revised by the means of external and terminalia morphologies, especially from the male. The specimens from various museums were first separated by external morphology, some specimens from each set had the terminalia of male and female dissected and illustrated, as well as the wings. An identification key to Amazonian species is provided, with updated analysis of the genus and of seven species recorded in this region: E. bergonzoi Raffone, 2000, E. biseticauda (Smith, 1963), E. ciliatocosta (Bezzi, 1904), E. flavida (Williston, 1896), E. mazaruni (Smith, 1963), E. monochaeta (Bezzi, 1909) comb.n. and E. similis (Smith, 1963). Eleven new species are described: E. digitata sp.nov., E. fortifemorata sp.nov., E. nigrescens sp.nov., E. palpina sp.nov., E. procera sp.nov., E. rubens sp.nov., E. serrulata sp.nov., E. tenebrosa sp.nov., E. tomentosa sp.nov., E. trisetulata sp.nov. and E. uncilobata sp.nov.. The female of E. biseticauda was described and illustrated for the first time as well as female terminalia of E. bergonzoi. For each species is provided a list of synonyms, diagnosis, geographic register, intraspecific variation, terminalia illustration of male and when it was possible, female. A discussion of occurrence and some interesting morphological similarities is included, as well as a list of Amazonian species of Elaphropeza. Herewith, the species number of Elaphropeza was elevated to 16 in Amazonia and 48 in the Neotropical region.