Spilogona biseriata ( Stein, 1916 )

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 : 36

Spilogona biseriata ( Stein, 1916)

Holotype. Male. Germany.

Diagnosis. Length of body. 4.5 mm (male). Head. Male frons intermediate, about one-fourth of head-width. Fronto-orbital plate, ocellar triangle, face, parafacial and gena brown. Ocellar triangle dark brown, very short. Ocellar setae very short. Eye without hairs. Antenna dark brown. Arista dark brown, short pubescent. Palpus dark brown. Gena at lowest eye margin less than width of postpedicel. Oral margin not projecting forwards. Thorax. Scutum and pleura brown, grey dusted, with 2 broad brown vittae. Acrostichals in 2 rows. Dorsocentrals 2+4. Notopleuron without setulae. Anepisternum without interspatial seta. Haltere yellow. Calypters white. Legs. Brown. Fore tibia without a posterior seta. Mid tibia with 2 posterior setae on middle third; without anteroventral and anterodorsal. Hind tibia with 4 anterodorsal setae; 2 submedian anteroventrals; 3 posterodorsals. Arolium and pulvillus enlarged. Wing. Smoky brown. Costal spine indistinct. Abdomen. Sternite 1 bare.

Remarks. The species can be identified with the key by Hennig (1959) who also illustrated the male terminalia (Hennig 1959, plate 11 fig. 218, plate 14 fig. 293).