Syllimnophora compressifrons ( Stein, 1904 )

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 : 44

Syllimnophora compressifrons ( Stein, 1904)

Figs 173–176; 254

Syntype. Male. Peru .

Diagnosis. Length of body. 5. 0 mm (male). Head. Male frons about one-fourth of head-width. Frons brown. Fronto-orbital plate, parafacial, face and gena brown, silver pruinose from certain angles. Ocellar triangle silver puinose, reaching lunule. Ocellar setae very long.Antenna dark brown. Arista dark brown, bare. Palpus dark brown. Oral margin strongly projecting forwards, and with a few black setae besides the vibrissa. Thorax. Scutum dark brown, silver pruinose, with 3 brown vittae, all broad and reaching tip of scutellum. Postpronotum and notopleuron silver pruinose. Dorsocentrals 2+3. Haltere yellow. Calypters white. Legs. Brown. Fore tibia without a posterior seta. Mid tibia with 2 posterior setae. Hind femur with an anteroventral row of setae on apical half. Hind tibia with 3 anterodorsal setae on middle third; 1 submedian anteroventral; without posterodorsal. Arolium and pulvillus enlarged. Wing. Smoky brown along costa. Costal spine distinct. M slightly curved forward close to apex. Abdomen. Dark brown, with a median silver pruinose vitta and 2 lateral stripes on all tergites.

Remarks. The species can be recognized by the slightly narrower male frons; the yellow haltere; the oral margin strongly projecting forwards; the smoky brown wing along costa. It can be identified with the key by Stein (1911, as Limnophora compressifrons ). Aedeagus as in Fig. 254.