Rhaphium srilankensis, Naglis, Stefan & Grootaert, Patrick, 2011

Naglis, Stefan & Grootaert, Patrick, 2011, A remarkable new species of Rhaphium Meigen (Diptera, Dolichopodidae) from Sri Lanka, Zootaxa 2991, pp. 44-48 : 45

Rhaphium srilankensis species-group

Included species: Rhaphium srilankensis sp. nov.

Diagnosis. Arista absent in males (MSSC) ( Fig. 1 A); first flagellomere with dense pubescence, 7 times as long as basal width, with acute apex; in females the arista is subapical and the first flagellomere is twice as long as basal width ( Fig. 1 B); mesonotum with purplish longitudinal stripe between dc rows in both sexes; ac small and biseriate; 6 strong dc present; 2 strong marginal scutellars present, without lateral setae or hairs; hind coxa with a strong lateral seta; mid femur with an anterior and a posterior preapical seta, fore and hind femora without preapicals; veins R4+5 and M subparallel in distal section. Male hypopygium partially exposed and visible under postabdomen (see species description for detailed description of the hypopygium).

Figures

FIGURE 1. Rhaphium srilankensis sp. nov.: first flagellomere. A. male. B. female (scale bar = 0.1 mm).