Camptochaeta unispina, 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 : 313-317

Camptochaeta unispina sp. n.

Fig. 7 A‒D; plate III, fig. VI

Locus typicus: USA, California, Los Angeles County, San Gabriel Mountains , San Gabriel Canyon , 800 m, oaks. Holotype: Male, 4.‒9.iii.1996, leg. W. Mohrig, yellow trap ( PWMP) . Paratypes: 5 males, 29.ii.1996, same location, caught by net ; 13 males, 2.‒26.iii.1997, California, Los Angeles County, San Bernardino National Park, Silverwood Lake , 1200 m, Malaise trap, all leg. W. Mohrig ( PWMP, 1 male in MZH, 1 male in PKHH, 1 male in SDEI, 1 male in CUIC) .

Description. Male. Head. Eye bridge 3‒4 facets wide; antennae brown; 4th flagellomere with l/w-index of 3.0, haired as long as diameter, neck rather short. Palpus short, 3-segmented, first segment with one bristle and a deepened sensory pit. Thorax. Brown, coxae and femora yellowish; scutum is haired rather long and pale; PLATE III. Figure V Gonostylus of Camptochaeta subxystica sp. n.; Figure VI Hypopygium of Camptochaeta unispina sp. n.

scutellum with two longer 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, yellowish. Coxae, femora and tibiae yellowish; tibial organ with a horseshoe-like patch of pale bristles, fine bordered; spurs of middle and hind tibiae equally long, longer than the apex of tibia wide; claws toothless. Abdomen. Hypopygium without intergonocoxal lobe or a bristle patch, v-shaped; gonocoxites haired short and sparsely at the inner ventral margin; gonostylus elongate, not concaved at the inner side; apical tooth short, basely pale; gonostylus with 3 shorter spines: 2 above tooth, one below at inner side. Tegmen is wider than high, rounded, with fine teeth and a rather short aedeagus. Body length: 2.8 mm.

Comments. The species is characterized by elongate gonostylus with a short apical tooth and 3 shorter spines (2 above the tooth, 1 below at the inner side). The species is similar to Cam. consimilis ( Holmgren, 1869) and differs from it by having only one spine below the apical tooth and being not concaved in the apical third of the inner side. Camptochaeta unispina sp. n. resembles Camptochaeta multispina sp. n., Cam. ofenkaulis ( Lengersdorf, 1925) and Cam. consimilis ( Holmgren, 1869) by its very narrow gonostylus, but differs from these and other species of the genus by having only one spine at the inner side.

Distribution. USA (California).

Figures

FIGURE 7. Camptochaeta unispina sp. n. Male. Holotype. A. Hypopygium. B. Gonostylus. C. Antennal flagellomeres 3 ‒ 4. D. Apex of fore tibia.