Bradysiopsis subvittigera, Mohrig, Werner & Kauschke, Ellen, 2016

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 : 299-300

Bradysiopsis subvittigera sp. n.

( Fig. 4 A–D)

Locus typicus: USA, California, Los Angeles County, San Bernardino Mountains , Lake Gregory Village , 900 m, oak forest. Holotype: Male, 26.ii.–4.iii.1996, leg. W. Mohrig, yellow trap ( PWMP) . Paratypes: 1 male, same data as holotype ; 7 males, 17.–22.ii.1996, same location, leg. W. Mohrig ; 3 males, 11.vi.–23.vii.1994, leg. E. Fuller, Canada, Alberta, Munn Creek, 53.30°N, 118.10°W, spruce forest (PWMP, 1 male in PKHH, 1 male in SDEI, 1 male in MZH).

Description. Male. Head. Dark brown. Eye bridge 3–4 facets wide. Antennae brown, 4th flagellomere with l/ w-index 2.8, haired whitish and somewhat shorter than wide. Palpus long, 3-segmented, basal segment without a deepened sensory area but with 3–4 bristles. Thorax. Brown. Scutum with three blackish strips and paler prescutellar as well as lateral areas, haired whitish and very short. Wings slightly brownish, R1: R = 0.8, c = 2/3 w, y = x, without macrotrichia; r-m cross vein directed proximally, posterior veins distinct and bare. Haltere short, brownish. Legs brown. Tibial organ large, with a patch of many dense bristles, not distinctly bordered; spurs of the middle and hind tibia short and equal; claws toothless. Abdomen. Brown, haired very short, sparsely and whitish. Hypopygium brown. Ventral base is widely v-shaped (not distinctly closed); gonocoxites shortly haired at the ventral inner margin. Gonostylus very long, thin and straight (three times longer than wide), with an apical tooth, 2 subapical spines and a few (3–4) long bristles at the apical half of the inner side. Tegmen as high as wide, rounded; aedeagus rather long and strong. Body size: 4 mm.

Comments. The species is characterized by long and slender, nearly straight gonostylus with 2 subapical spines. It differs by very long, thin and nearly straight gonostylus from all other species with whiplash-like bristles on the inner side of that genus.

Distribution. USA (California), Canada (Alberta).

Figures

FIGURE 4. Bradysiopsis subvittigera sp. n. Holotype. A. Part of the hypopygium, ventral view. B. 4 th flagellomere. C. Apex of fore tibia. D. Wing.