Thaumasiochaeta variegata ( Stein, 1911 )

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 : 48

Thaumasiochaeta variegata ( Stein, 1911)

Figs 209–212

Paralectotypes. 2 males, 2 females. Lectotype in SMT, designated by Pont (2001: 487). Peru .

Diagnosis. Length of body. 3.5–4.0 mm (male), 4.5–5.0 mm mm (female). Head. Male frons about one-third of head-width, brown. Fronto-orbital plate, parafacial, face and gena strongly golden pruinose. Ocellar triangle reaching halfway to lunule. Ocellar setae very long.Antenna dark brown. Arista dark brown, bare. Palpus dark brown, long, enlarged and flat. Oral margin only slightly projecting forwards. Thorax. Scutum dark brown. Dorsocentrals 2+3. Katepisternals 1:1. Haltere brown. Calypters white. Legs. Brown. Fore tibia with 1 long dorsal seta in apical third, its apex flat and triangular in shape. Mid tibia with 3–4 anterodorsal and posterodorsal setae on middle third and 2 submedian anteroventrals. Hind femur bowed on basal third. Hind tibia with 1 anterodorsal seta; without anteroventral and posterodorsal; middle third of ventral surface with short and fine setae. Arolium and pulvillus short. Wing. Smoky brown from base as far as cross veins r-m and m-m and at apex between costa and vein R 4+5. Costal spines distinct, extending as far as tip of vein R

2+3

. Abdomen. Brown, broadly grey pollinose.

Remarks. The male can be recognized by the chaetotaxy of the legs and the markings on the wing. It was keyed by Couri (1999) and by Couri and Carvalho (2002). The morphological features and the male and female terminalia were illustrated by Couri (1999, figs 14–27).