Camptochaeta praexystica, Mohrig, Werner & Kauschke, Ellen, 2017

Mohrig, Werner & Kauschke, Ellen, 2017, New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part III. Genera Camptochaeta Hippa & Vilkamaa, Claustropyga Hippa, Vilkamaa & Mohrig and Dichopygina Vilkamaa, Hippa & Komarova, Zootaxa 4258 (4), pp. 301-326 : 309-313

Camptochaeta praexystica sp. n.

Fig. 5 A‒B; plate II, fig. IV

Locus typicus: Canada, Alberta, Munn Creek, 53.30°N, 118.10°W, spruce forest. Holotype: Male , 11.vi.‒24.vii.1994, leg. E. Fuller, Malaise trap ( PWMP).

PLATE II. Figure III Part of the hypopygium of Camptochaeta multispina sp. n.; Figure IV Hypopygium of Camptochaeta praexystica sp. n.

Description. Male. Head. Eye bridge 3 facets wide; antennae brown; 4th flagellomere with l/w-index of 2.0, haired as long as diameter, neck rather short. Palpus short, 3-segmented, first segment with one bristle and a deep sensory pit. Thorax. Brown, coxae and femora paler; scutum is haired rather long, pale; scutellum with two long bristles; posterior pronotum bare. Wings brownish; R1 = 3/4 R; c = 2/3 w; y = x; y with 1‒2 macrotrichia; posterior wing veins distinct, without macrotrichia. Haltere are rather long, brownish. Coxae, femora and tibiae brownish; tibial organ with a horseshoe-like patch of bristles, fine bordered; spurs of middle and hind tibiae equally long, somewhat longer than the apex of tibia wide; claws toothless. Abdomen. Hypopygium without intergonocoxal lobe or a bristle patch, v-shaped; gonocoxites haired sparsely at the inner ventral margin; gonostylus strong, concaved at the inner side, with a whiplash-like bristle in the middle; apical tooth longer than spines, basely pale; gonostylus with 5 shorter spines: 2 above tooth, 2 as pair above the middle of the inner side, 1 isolated in the middle. Tegmen is wider than high, with fine teeth and a rather short aedeagus. Body length: 2.5 mm.

Comments. The species is characterized by short and strong gonocoxites, long as well as strong gonostylus with an apical tooth, pale at the base and five spines shorter than the tooth. The species is similar to Cam. xystica Hippa & Vilkamaa, 1994 from Europe and Cam. xysticoides Hippa & Vilkamaa, 1994 from Alaska. It differs from Cam. xysticoides Hippa & Vilkamaa, 1994 by longer gonostylus with a slender tooth, 5 equally long spines in the middle (not 3 strong spines) and a wider tegmen, apical evenly curved.

Distribution. Canada (Alberta).

Figures

FIGURE 5. Camptochaeta praexystica sp. n. Male. Holotype. A. Hypopygium. B. Gonostylus.