Limnophora narona ( Walker, 1849 )

Couri, Márcia & Pont, Adrian, 2020, Type specimens of Limnophorini (Diptera: Muscidae) deposited in the Museum für Naturkunde, Humboldt-Universität zu Berlin (Berlin, Germany), Zoologia (e 46879) 37, pp. 1-57 : 11

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).