Spilogona acrostichalis ( 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 : 34-35

Spilogona acrostichalis ( Stein, 1916)

Holotype. Male. Estonia.

Diagnosis. Length of body. 4.0 mm (male). Head.Male holoptic. Fronto-orbital plate, ocellar triangle, face, parafacial and gena brown-silver pruinose from certain angles; fronto-orbital plate reddish brown close to lunule. Ocellar triangle 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 about 1.5 times width of postpedicel. Oral margin not projecting forwards. Thorax. Scutum uniformly brown. Postpronotun and notopleuron grey dusted. Notopleuron not haired. Acrostichals developed, in 2 rows. Dorsocentrals 2+4. Anepisternum without interspatial setae. Haltere yellow. Calypters white. Legs. Brown. Fore tibia with 2 posterior setae on middle third. Mid tibia with 2 posterior setae on middle third; without anteroventral and anterodorsal. Hind tibia with 4 anterodorsal setae; 2 anteroventrals and 1 posterodorsal. Arolium and pulvillus enlarged. Wing. Costal spine indistinct. Abdomen. Sternite 1 bare.

Remarks. This species can be recognized by the rather long acrostichal setulae and can be identified with the key by Hennig (1959). The male terminalia were illustrated by (Hennig 1959, plate 11 fig. 223, plate 14 fig. 285).