Camptotarsopoda albibasis ( Stein, 1913 )

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 : 2

Camptotarsopoda albibasis ( Stein, 1913)

Figs 1–4

Syntypes. 2 males, 1 female. Tanzania and South Africa .

Diagnosis. Length of body. 5.0 mm (male), 4.5 mm (female). Head. Male holoptic with only one pair of frontal setae, close to lunule. Female with frons broad, about one-third of head-width at vertex. Frons and fronto-orbital plate dark brown. Parafacial, face and gena grey pollinose. Ocellar setae long. Eye enlarged; gena very narrow. Pedicel, postpedicel and arista dark brown. Postpedicel 2.5 times as long as wide, its tip rounded. Arista long, bare. Palpus dark brown, filiform. Thorax. Scutum brown, postpronotum and notopleuron partially grey pollinose. Dorsocentrals 2+4. 2 proepisternals.Katepisternum with only the posterior seta, which is preceded by many shorter setae, more numerous in male. Lower calypter about twice as long as the upper one. Haltere yellow. Calypters smoky brown with margins dark brown. Legs. Brown; coxae grey dusted; legs uniformly brown, fore and mid tibiae white on basal half; tarsomeres of fore leg uniformly brown. Fore femur with a complete row of setae on posterior and posterodorsal surfaces; ventral surface with setae in apical third. Fore tibia with 1 long posterior preapical seta. Mid femur with 2 anterior setae on middle third and 2 posterior preapicals; anterior surface with a submedian depression with a tuft of setae in male. Mid tibia with 1 dorsal and 1 ventral apical setae. First tarsomere of mid tarsus modified, with a ventral depression, with short stiff setae at apex. Hind leg long in male. Hind femur of male with anterodorsal and dorsal rows of setae, longer and more numerous on apical half. Hind tibia with 1 anterodorsal and 1 anteroventral row of setae, the ones on apical half longer. Arolium and pulvillus not enlarged. Wing. Uniformly smoky brown. Costal spine indistinct. Abdomen. Long, a little depressed dorsally. Grey pollinose with broad brown triangular lateral spots on tergites 1+2–4; tergite 5 with 2 brown round spots. Terminalia not enlarged.

Remarlks. Camptotarsopoda is restricted to the Afrotropical region, with five known species, all of them described by Stein (1913) in Camptotarsus . Usually they have 4 postsutural dorsocentrals (except Camptotarsopoda nitida ) and at least the fore tibia is often partly creamy-white (except in Camptotarsoposa pallipes ). The males of all species have the first tarsomere of mid tarsus modified, as a ventral depression, with short stiff setae at apex ( Emden 1951, fig. 12). Malloch (1929) and Emden (1951) keyed the five species.