Xenomyia osculata Pont and Werner, 2003

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 : 53

Xenomyia osculata Pont and Werner, 2003

Figs 217–220

Paratypes. 1 male, 1 female. South Africa .

Diagnosis. Length of body. 4.0 mm (male), 4.5 mm (female). Head. Both male and female have a very characteristic head, with fronto-orbital plates enlarged and touching for almost their entire length and covered with small dense setulae. Frons broad, about one-third of head-width. Ocellar setae absent. Eyes small, with sparse hairs. Antenna dark brown, with postpedicel broad and long, reaching oral margin. Arista short, short pubescent. Palpus long, yellow on basal two-thirds and brown on apical third. Gena deep, about 2 times the width of the broad postpedicel. Thorax. Scutum shiny brown with two white dusted presutural lateral areas between the 2 rows of dorsocentral setae. Prosternum bare. Dorsocentrals 2+3. Haltere with knob white. Calypters white. Legs. Brown. Fore tibia without median setae. Mid tibia with 1 submedian posterior seta. Hind tibia with 1 anterodorsal and 1 posterodorsal setae. Arolium and pulvillus not enlarged. Wing. With a dark cloud formed by dense, elongated microtrichia ( Pont and Werner 2003, fig. 5). Costal spine indistinct. Veins bare. Abdomen. Sternite 1 bare.

Remarks. Flies of the genus Xenomyia Malloch, 1921 have many characters that are abnormal for muscids and are restricted to the Afrotropical region. Of the 16 described species, 7 are from South Africa and were keyed by Pont and Werner (2003), where X. osculata can be identified. The male aedeagus and female ovipositor were first illustrated for Xenomyia by Pont and Werner (2003, figs 7–11).