Bradysiopsis Tuomikoski, 1960

Mohrig, Werner & Kauschke, Ellen, 2016, New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part II. Genus Bradysiopsis Tuomikoski, 1960, Zootaxa 4154 (3), pp. 293-302 : 294

Genus Bradysiopsis Tuomikoski, 1960

Type species: Lycoriella (Bradysiopsis) leucotricha Tuomikoski, 1960: 74 , 45, 56, figs 9 h, 19 d [= Sciara vittata Meigen, 1830 ].

Literature: Menzel & Mohrig 1998: 359; Menzel & Mohrig 2000: 185–191.

Diagnose. A very short, fine and whitish hairiness of thorax and abdomen is typical for the genus. All species known so far are large (3–4 mm) and of dark body color. Palpus are three-segmented. The basal segment has 3–5 bristles but no deepened sensory area. Eye bridge is closed and 3–4 facets wide. Antennae are brown and rather long (l/w index 2–3.5). Scutum shows either three blackish strips or is centrally blackish. Prescutal and lateral parts are paler. Posterior pronotum is bare. Wings are large. Posterior veins are distinct and without macrotrichia as well as x/y. The tibial organ is large and has a patch of many bristles, which are not or just very weak bordered. Spurs of middle and hind tibiae are rather short (not much longer than the apex width) and sometimes slightly unequal long. Claws are toothless. Ventral base of hypopygium (intergonocoxital space) does not show structures like a lobe or a bristle patch. It is broad closed in some species and v-shaped in others. The ventral inner margin of gonocoxites is haired short and sparsely. Gonostylus differ in shape, but have always a long and strong apical tooth as well as a variable number of hyaline subapical spines. Most species show long whiplash-like bristles on the inner side of gonostylus. Tegmen is mostly simple, rounded, narrowed toward apex and has a large area of fine teeth.