Bradysia chloroantennata, 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 : 214-215

Bradysia chloroantennata sp. n.

( Fig. 8 A–C )

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

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

Paratypes: 3 males, November 2015, Victoria, Twin River Drive, South Morang , yellow pan trap in vegetable

garden, leg. A. Broadley, #86; (1 in PWMP, 2 in PABM); 1 male, 8.xi.1978, New South Wales, Jerilderie, sweep net, leg J. McGechan ( ASCT 00053769) ( ASCU).

Description. Male. Head. Brown. Eye bridge 3–4 facets wide. Antenna brownish, surface nearly smooth, scape and pedicel brownish-ochrous, the first 2 flagellomeres yellowish; 4th flagellomere with a l/w index of 2.0, hairs pale, rather dense and as long as the diameter of the basal node; neck rather short, bicoloured. Palpus short, 3- segmented, yellowish, basal segment with 1 bristle and a distinct pit of sensillae. Thorax. Brown. Scutum with short and pale hairs, some lateral and prescutellar bristles longer; scutellum with 2 marginal bristles; postpronotum bare. Wing pale; R1 short, nearly 1/2 =R; R5 without ventral macrotrichia; C = 2/3 w; y = x, without macrotrichia; posterior wing veins without macrotrichia. Haltere short, brown. Coxae and legs paler than pleura; 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. Brownish. Hypopygium yellowish-brown, the ventral base and the gonocoxites at the inner ventral margin with rather short sparse hairs; gonostylus short and robust, without an apical tooth, rounded apically and densely covered at the apex with hairs and robust spine-like bristles (distinct spines are not visible). Tegmen wider than long, with a large field of fine teeth. Aedeagus rather short. Body length: 2.0 mm.

Comments. The species is characterized by the yellow colour of the first 2 flagellomeres, a darker scape and pedicel, bicoloured necks, smooth surface of flagellomeres, sensory pit on the basal segment of the palpus, short R1, and a compact gonostylus without a tooth (the apex with strong bristle-like spines only). The species belongs to the B. hilaris group.

Distribution. Australia: New South Wales, Victoria.

Figures

FIGURE 8. Bradysia chloroantennata sp. n. A. Hypopygium; B. Basal sEgmEnts of antEnnaE; C. HEaD anD thorax.