Bradysia crassicornis ( Skuse, 1890 ) Skuse, 1890

Broadley, Adam, Kauschke, Ellen & Mohrig, Werner, 2016, Revision of the types of male Sciaridae (Diptera) described from Australia by F. A. A. Skuse, Zootaxa 4193 (3), pp. 401-450 : 419-421

Bradysia crassicornis ( Skuse, 1890) comb. n.

( Fig. 11 A‒C)

Bradysia crassicornis Skuse, 1890 [ Skuse (1890): 407].

Type locality. Australia, New South Wales, Dunoon, Richmond River .

Holotype: Male. Original label data verbatim ‘ S. crassicornis / Ƌ (ink) TYPE./ F. A. A. Skuse’ (print), ‘Dunoon/ Mar. Apr’ (ink). Mounted in Canada balsam Dec. 2015. ( ANIC; Slide No. 012).

Remarks. Original description states “ Hab.—Dunoon, Richmond River, N.S.W. (Helms). March and April.”

Preservation. All details in good condition.

Additional description. Male. Head. Brown. Eye bridge 3 facets wide. Antenna with rough surface, brown; scape, pedicel and first flagellomeres yellowish-brown, necks rather long, pale, weakly bicoloured; 4th flagellomere with l/w-index of 1.8, with dense curved hairs that are shorter than the width of the basal node; palpus 3- segmented. Thorax. Brown, scutum with three darker stripes and rather short pale bristles; scutellum with two longer marginal bristles; postpronotum bare. Wing pale; R1 = 2/3 R; R5 with dorsal macrotrichia only; C = 2/3 w; y somewhat shorter than x, without macrotrichia; posterior veins weak, without macrotrichia. Haltere short, brownish. Legs yellowish; fore tibia with a broad comb of 5‒6 pale bristles; spurs of middle and hind tibia equal in size, thin, somewhat longer than the width of the apex of tibia; claws without teeth. Abdomen. Brown, with sparse, rather long brown hairs. Hypopygium brown, with v-shaped ventral base, without lobe or bristle patch; ventral inner margin of gonocoxite with fine and rather short hairs; gonostylus elongate, without apical tooth, with 4‒5 short apical spines; tegmen not visible. Body length: 2.2 mm.

Comments. This species is characterized by rough flagellomeres with dense and curved hairs, by the yellowish scape, pedicel and first flagellomere, and by the gonostylus which possesses 5 short apical spines. It is similar to Palaearctic species that are related to B. scabricornis Tuomikoski.

Distribution. Australia (New South Wales).

Figures

FIGURE 11. Bradysia crassicornis (Skuse, 1890). A. Hypopygium; B. Gonostylus; C. Head and basal segments of antennae.