Lispe albitarsis Stein, 1898

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 : 15

Lispe albitarsis Stein, 1898

Lectotype. Male. Paralectotypes. 7 males, 9 females. Lectotype designated by Fogaça and Carvalho (2018: 2154). U.S.A.

Diagnosis. Length of body. 5.5–5.8 mm (male, female). Head. Male dichoptic, frons about one-third of head-width.Frons, fronto-orbital plate, face, parafacial and gena golden-silver pruinose. Male fronto-orbital plate and parafacial setulose. Antenna and arista dark brown; postpedicel with tip rounded. Palpus dark brown, gradually enlarged to apex. Vibrissa long. Thorax. Scutum dark brown. Postpronotum and notopleuron very faintly grey dusted. Dorsocentrals 2+3. Lower katepisternal strong, forming an equilateral triangle with the other two setae. Haltere yellow. Calypters white. Legs. Brown with coxae grey dusted. Tarsomeres 1–3 of fore leg yellow. Fore tibia with 1 posterior seta. Fore tarsus in male with tarsomeres 1–3 slender and mostly yellow; tarsomeres 4–5 broadened and infuscated.Mid femur with 2 posterior preapical setae. Mid tibia with 1 median posterior and 1 submedian anterodorsal setae; without an anteroventral. Hind tibia with 1 long median anterodorsal seta and 3–4 shorter supramedian; 1 median anteroventral seta and 1 dorsal preapical. Arolium and pulvillus not enlarged. Wing. Costal spine distinct.Vein M straight at apex. Abdomen. Sternite 1 setulose.

Remarks. The species can be recognised by the differentiated shape and colour of the tarsomeres of fore leg. The Nearctic species were revised by Snyder (1954), who also presented a key to identification with which this species can be identified. It belongs to the uliginosa -group of Lispe , with a characteristic median basal plate on sternite 5 (Hennig 1960: text-fig. 120). Cercal plate (dorsal and lateral), sternite 5, aedeagal complex and ovipositor (lateral view) illustrated by Snyder (1954, figs 25, 40, 54, 68). Keyed by Vikhrev (2015) and more recently keyed, redescribed and illustrated by Fogaça and Carvalho (2018: figs 6a, 7a, 8a, 12a–f).