Dichopygina praeaculeata, Mohrig, Werner & Kauschke, Ellen, 2017

Dichopygina praeaculeata View in CoL sp. n.

Fig. 10 View FIGURE 10 A‒B; plate V, fig. IX

Locus typicus: Canada, Munn Creek, 53.30°N, 118.10°W, spruce forest. Holotype: Male, 23.vii.‒15.ix.1994, leg. E. Fuller, Malaise trap ( PWMP). GoogleMaps

PLATE V. Figure IX Hypopygium of Dichopygina praeaculeata sp. n.

Description. Male. Head. Eye bridge 3 facets wide; antennae brown; 3rd flagellomere with l/w-index of 2.8, haired as long as diameter, neck rather short. Palpus are 3-segmented, first segment with one bristle and a flat sensory pit. Thorax. Brown, coxae paler. Scutum is haired rather long, brownish; scutellum with two longer bristles; posterior pronotum bare. Wings brownish; R1 = 3/4 R; c = 2/3 w; y shorter x; y without macrotrichia; posterior wing veins distinct, without macrotrichia. Haltere short, brownish. Legs are missing. Abdomen. Hypopygium without a lobe or a bristle patch at the ventral base; gonocoxites haired rather long and sparsely at the inner ventral margin; gonostylus concaved at the inner side, with a short dark apical tooth and 3 longer spines at the inner side of the apical concavity. Tegmen rounded, with fine teeth and a short aedeagus. Body length: 2.5 mm.

Comments. The species is characterized by a short apical tooth and 3 longer spines at the inner side of the apical concavity. It is similar to Di. aculeata Vilkamaa, Hippa & Komarova, 2004 but differs from it by having only three spines in a shorter apical concavity.

It resembles also Di. intermedia ( Mohrig & Krivosheina, 1982) which is the only known species of the genus having spines exclusively in the apical quarter of gonostylus. Dichopygina praeaculeata sp. n. can be distinguished from Di. intermedia ( Mohrig & Krivosheina, 1982) in having the dorsolateral margin of gonostylus subapically less distinctly curved (see Fig. 7 View FIGURE 7 G in Vilkamaa et al. (2004), and in having the bases of the three gonostylar spines close to each other. Spines are pointing in different directions.

Distribution. Canada ( Alberta).