Lispe palposa ( Walker, 1849 )

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 : 26

Lispe palposa ( Walker, 1849)

Syntypes. 1 male, 5 females of Lispa nigromaculata Stein, 1898 , junior synonym of L. palposa . U.S.A.

Diagnosis. Length of body. 5.0 mm (male), 6.0– 6.5 mm (female). Head. Male dichoptic, frons broad, more than one-third of head-width. Frons and fronto-orbital plate dark brown. Face, parafacial and gena silver pruinose. Ocellar triangle almost indistinct. Male fronto-orbital plate with few setulae. Antenna and arista brown; bare on apical third. Palpus brown; abruptly enlarged towards apex. Vibrissa absent. Thorax. Scutum dark brown, a little shiny, with 2 grey dusted lateral areas close to suture and a transverse band before scutellum. Postpronotum and notopleuron grey dusted. Dorsocentrals 2+3. Haltere yellow. Calypters white. Legs. Brown, grey dusted, tip of femora yellow. Fore tibia without a posterior median seta. Mid femur with 2 posterior preapical setae. Mid tibia with 1 anterodorsal and 1 posterodorsal setae, both median; without anteroventral. Hind tibia with 1 median anterodorsal; without anteroventral and posterodorsal; 1 dorsal preapical. Arolium and pulvillus not enlarged. Wing. Costal spine indistinct. Vein M straight. Abdomen. Sternite 1 setulose.

Remarks. The Nearctic species were revised by Snyder (1954), who also gave an identification key with which this species can be identified. It belongs to the palposa -group of Lispe (Hennig 1960) (see comments on the group under L. elkantarae ). The male and female terminalia were illustrated by Snyder (1954, figs 31, 49, 63, 75).