Bradysia fuscovirgata, Mohrig & Kauschke & Broadley, 2018

Mohrig, Werner, Kauschke, Ellen & Broadley, Adam, 2018, New black fungus gnats (Diptera: Sciaridae) from Eastern Australia, Zootaxa 4450 (2), pp. 203-241 : 216-218

Bradysia fuscovirgata sp. n.

( Fig. 9 A–C )

Type locality: New South Wales, Candelo (near Bega).

Holotype: Male, 17.–24.xii.1993, yellow trap, leg. A. Kallies (ANIC).

Paratypes: 3 males, same locality , same data (2 in PWMP, 1 in PABM) .

Description. Male. Head. Brown. Eye bridge 2–3 facets wide. Antenna brownish, surface nearly smooth, scape and pedicel somewhat paler, 4th flagellomere with l/w index of 3.0, hairs dense and as long as the diameter of the basal node; neck rather short, brownish. Palpus 3-segmented, yellowish, basal segment with 2–3 bristles and a flat sensory area. Thorax. Yellowish brown. Scutum yellowish with three darker stripes and short, fine and sparse hairs, some lateral bristles longer; scutellum with 2 marginal bristles; postpronotum bare, pleural sclerites yellow, katepisternum darkened at the tip, metanotum distally darkened. Wing slightly brownish; R1 = 2/3 R; R5 without ventral macrotrichia; C = 2/3 w; y = x, without macrotrichia; posterior wing veins without macrotrichia. Haltere short, pale. Coxae and legs yellow; apex of fore tibia with a comb of bristles; spurs of middle and hind tibiae equal in size, longer than the diameter of the apex; claws without teeth. Abdomen. Brownish. Hypopygium yellowishbrown, the ventral base and the gonocoxites at the inner ventral margin with rather sparse and short hairs; gonostylus prolonged, weakly bulbous, pointed to the apex and darkened in the distal third; without an apical tooth but with 4 apical spines. Tegmen wider than long, rounded apically, with a large field of fine teeth. Aedeagus rather long. Body length: 2.2 mm.

Comments. The species is characterized by the yellow colour of the pleural sclerites, three dark stripes on the scutum, long flagellomeres, a prolonged and bulbous gonostylus without a tooth and with 4 apical spines. It belongs to the B. hilaris group, although the necks are not bicoloured.

Distribution. Australia: New South Wales.

Figures

FIGURE 9. Bradysia fuscovirgata sp. n. A. Hypopygium; B. FlagEllomErEs 4–5; C. HEaD anD thorax.