Lispe bengalensis ( Robineau-Desvoidy, 1830 )

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 : 18

Lispe bengalensis ( Robineau-Desvoidy, 1830)

Syntypes. 6 males, 4 females and 1 male, 2 females, respectively of Lispa armipes Becker, 1903 and Lispa determinata Becker, 1914 , both junior synonyms of L. bengalensis . Egypt ( L. armipes ) and Taiwan ( L. determinata ).

Diagnosis. Length of body. 6.5–8.0 mm (male, female). Head. Male dichoptic, frons about one-third of head-width. Frons brown; fronto-orbital plate, face, parafacial and gena silver pruinose. Ocellar triangle silver pruinose, reaching lunule. Male fronto-orbital plate with few setulae. Antenna and arista dark brown; bare on apical third. Palpus dark brown, abruptly dilated at apex. Vibrissa long; 1–2 long setae above vibrissa. Thorax. Scutum dark brown, with 2 lateral grey dusted areas on suture and before scutellum. Postpronotum and notopleuron grey dusted. Dorsocentrals 2+4. Haltere yellow. Calypters white. Legs. Dark brown, with coxae grey dusted. Fore tibia without a median posterior seta. Mid femur with 2 posterior preapical setae. Mid tibia with 1 median posterior to posterodorsal seta; without submedian anterodorsal and anteroventral setae. Hind tibia with 1 median anterodorsal and 1 submedian anteroventral setae; without posterodorsal; 1 long dorsal in apical fourth; 1 preapical anterodorsal. Arolium and pulvillus enlarged. Wing. Costal spine indistinct. Vein M straight. Abdomen. Sternite 1 setulose.

Remarks. The species can be easily identified in the key by Hennig (1960) to Palaearctic Lispe , as L. tetrastigma Schiner , junior synonym of L. bengalensis . The male and female terminalia were illustrated by Hennig (1960, text-figs 93, 123, 143, plate 19 fig. 381, plate 20 fig. 401). Hennig (1960: 413) did not group this species. Pont (1991) and Couri et al. (2006) also keyed the species. In a more recent revision of the Australian species of Lispe by Pont (2019), the species was keyed and fully redescribed, and some external characters and the male and female terminalia were illustrated ( Pont 2019, figs 448–459).