Limnophora narona (Walker, 1849)

Syntypes.

5 males, 4 females of Limnophora cyrtoneurina Stein, 1898, junior synonym of L. narona. U. S. A.

Diagnosis.

Length of body. 5.0-6.0 mm (male), 5.0- 5.5 mm (female) Head. Male eye margins almost touching on middle line. Female with frons broad, about one-third of head-width. Fronto-orbital plate, parafacial and gena brown-grey dusted. Antenna and arista dark brown; postpedicel with tip rounded. Arista short pubescent on basal half and bare on apical half. Palpus dark brown. Thorax. Scutum with 3 brown vittae fused postsuturally as far as level of fourth dorsocentral setae. Postpronotum and notopleuron grey dusted. Scutellum dark brown. Dorsocentrals 2 + 4. Intraalars 1 + 1. Lower katepisternal short and fine, closer to posterior seta. Haltere yellow. Calypters white. Legs. Fore tibia without a posterior seta. Mid femur with 2 preapical setae. Mid tibia with 1 median posterior seta. Hind tibia with 1 short and fine median anterodorsal and anteroventral setae; without posterodorsal. Arolium and pulvillus not enlarged. Wing. Base smoky brown. Vein M slightly curved upwards. Costal spine indistinct. Abdomen. Sternite 1 bare.

Remarks.

The arista with short pubescence only on basal half, bare on apical half, and the vein M slightly curved forwards help in the recognition of this species. Keyed by Huckett (1932, in subgenus Limnophora) and more recently by Patittucci et al. (2013). The male and female terminalia were illustrated by Lopes and Couri (1987, figs 12-17).