Bradysia nigroantennata, 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 : 220-222

Bradysia nigroantennata sp. n.

( Fig. 13 A–E )

Type locality: Australia, Victoria, Wilsons Promontory , Lilly Pilly Gully.

Holotype: Male, January 1978, leg. A. Stocker, ASCT 00053639 ( ASCU).

Paratypes: 1 male, 29.iv.1978, New South Wales, Royal National Park, leg. B.J. Loudon, ASCT 00053562 ( PWMP); 1 male, 26.iv.1980, New South Wales, Alstonville, light trap, leg. M.J. Cartwright, ASCT 00053629 ( PABM); 1 male, 14.–21.vi.1992, Victoria, Coranderrk, 2.5 km S of Healesville, 37°416´S, 145°317´E, Eucalyptus viminalis, Pitfall trap, leg. C. Meehan & D. Hooper ( PWMP).

Description. Male. Head. Dark brown. Eye bridge 3 facets wide. Antenna dark brown, 4th flagellomere with l/ w index of 2.6, hairs erect, rather dense and as long as the diameter of the basal node; neck very short, brownish. Palpus 3-segmented, brown, basal segment with 4–5 bristles and a deepened sensory area. Thorax. Dark brown. Scutum with rather short hairs, some lateral bristles longer; scutellum with 2 marginal bristles; postpronotum bare. Wing brownish; R1 = 3/4 R; R5 without ventral macrotrichia; C = 2/3 w; y = x, without macrotrichia; M-fork long and narrow, posterior wing veins without macrotrichia. Haltere short, brown. Coxae and legs brown; apex of fore tibia with a small comb of bristles; spurs of middle and hind tibiae equal in size, longer than the diameter of the apex; claws without teeth. Abdomen. Brown, with short and sparse hairs. Hypopygium basally with an intergonocoxal lobe-like patch of bristles; gonocoxites at the inner ventral margin with rather short sparse hairs; gonostylus prolonged (a little shorter than gonocoxite), the inner side bulbous in the middle, with rather strong apical tooth, above with one isolated spine and 3–4 spines below. Tegmen as wide as long, rounded apically, with a semicircular structure. Aedeagus long. Body length: 2.5 mm.

Comments. The species is characterized by the dark body colour, the lobe-like intergonocoxal patch of bristles, prolonged gonostylus with strong apical tooth and 4–5 strong spines, one above the tooth, 3(4) below.

Distribution. Australia: New South Wales, Victoria.

Figures

FIGURE 13. Bradysia nigroantennata sp. n. A. Gonostylus; B. VEntral basE of hypopygium; C. FlagEllomErEs 4–5; D. Tibial organ; E. Wing.