Spilogona leucogaster ( Zetterstedt, 1838 )

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 : 38

Spilogona leucogaster ( Zetterstedt, 1838)

Figs 141–144

Syntypes. 2 females of Limnophora nitidifrons Stein, 1920b , junior synonym of S. leucogaster . U.S.A.

Diagnosis. Length of body. 4.5 mm (female). Head. Frons broad, about one-third of head-width. Fronto-orbital plate brown. Face, parafacial and gena silver pollinose. Ocellar triangle shiny dark brown, broad and long, reaching lunule. Ocellar setae long. 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 uniformly shiny dark brown. Acrostichal setulae fine, in irregular rows. Dorsocentrals 2+4. Notopleuron with setulae. Anepisternum with 1 interspatial seta. Haltere yellow. Calypters white. Legs. Brown. Fore tibia without a posterior seta. Mid tibia with 2 posterior setae on middle third; 1 anterodorsal; without anteroventral. Hind tibia with 2 anterodorsal setae; 3–4 anteroventrals on apical third; 1–2 posterodorsals. Arolium and pulvillus enlarged. Wing. Smoky brown. Costal spine indistinct. Abdomen. Uniformly shiny brown. Sternite 1 bare.

Remarks. The female is easily recognized by the shiny dark brown body and the broad and glossy ocellar triangle. It can be identified with the keys to Spilogona species by Huckett (1932) (as subgenus of Limnophora ), by Huckett (1965), and by Hennig (1959). The male and female terminalia were illustrated by Hennig (1959, text-fig. 58e, plate 12 fig. 236, plate 16 fig. 320).