New species of Dolichopus Latreille, 1796 from China (Diptera: Dolichopodidae) Author Zhang, Lili Author Yang, Ding text Journal of Natural History 2008 2008-10-31 42 39 - 40 2515 2535 http://dx.doi.org/10.1080/00222930802354100 journal article 10.1080/00222930802354100 1464-5262 5224173 Dolichopus (Dolichopus) yangi sp. nov. ( Figure 3 ) Type material Holotype : male, China : Heilongjiang Prov. : Wudalianchi , 7 August 1985 , coll. Yang Jikun (CAU). Figure 3. Dolichopus (Dolichopus) yangi sp. nov. (A) antenna; (B) wing; (C) male genitalia (lateral view); (D) cercus; (E) subepandrial lobes (postgonite invisiblae in lateral view). Diagnosis Middle and lower postocular bristles pale. Antenna black; first flagellomere black, 1.6 times longer than wide, distinctly obtuse apically. All coxae black. Fore and mid femora black with nearly apical half yellow, hind femur black with extreme apex yellow ventrally. Fore tibia with one brown apv (half as long as fore tarsomere 1). Costal callus distinct, M without rudimentary M 2 . Squama yellow with black hairs. Description Male . Head metallic green with pale gray pollen. Face slightly narrower than first flagellomere. Hairs and bristles on head black; middle and lower postocular bristles pale. Antenna ( Figure 3A ) black; first flagellomere black, 1.6 times longer than wide, distinctly obtuse apically; arista black, nearly bare, with basal segment 0.4 times as long as apical segment. Proboscis brown with black hairs; palpus brown with black hairs and one black apical bristle. Thorax metallic green with pale gray pollen. Hairs and bristles on thorax black; six strong dc, seven paired acr; scutellum with two pairs of bristles (basal pair short and hair-like) and some short pale marginal hairs. Propleuron pale haired with one black bristle on lower portion. Legs [hind tarsomeres 4–5 broken off] yellow; all coxae black. Fore and mid femora black with nearly apical half yellow, hind femur black with extreme apex yellow ventrally. Fore tarsomeres 3–5 brown to dark brown; mid tarsus from tip of tarsomere 1 onward brown to dark brown; apical half of hind tibia and entire hind tarsus black. Hairs and bristles on legs black, mid and hind coxae each with one outer bristle, mid and hind femora each with one preapical bristle. Fore tibia with two ad, two pd and two pv, apically with two bristles and one brown apv (half as long as fore tarsomere 1); mid tibia with four ad, two pd and one av, apically with four bristles; hind tibia with four ad, four pd, one apical d and one av, apically with one bristles. Hind tarsomere 1 with one d and one l. Relative lengths of tibia and five tarsomeres: LI 1.3: 0.6: 0.25: 0.2: 0.15: 0.15; LII 1.7: 0.9: 0.5: 0.35: 0.25: 0.2; LIII 2.0: 0.75: 0.75: 0.5:?:?. Wing ( Figure 3B ) hyaline, veins brown. Costal callus distinct, M without rudimentary M 2 ; CuAx ratio 0.5. Squama yellow with black hairs. Halter yellow. Abdomen metallic green with pale gray pollen. Hairs and bristles on abdomen black. Male genitalia ( Figures 3C–E ): Epandrium distinctly longer than wide; outer epandrial lobe with two apical bristles, inner epandrial lobe distinct; cercus nearly rectangular, with distinct finger-like marginal processes and bristles; hypandrium acute apically. Female . Unknown. Measurements of male (mm) . Body length 3.6 mm , wing length 3.4 mm . Etymology The new species is named after Prof. J. K. Yang. Remarks The new species is similar to D. phaeopus Haliday in the first flagellomere somewhat elongated and distinctly obtuse apically. But it may be separated from the latter by the fore tibia with 1 brown apv half as long as fore tarsomere 1 and yellow tibiae. In D. phaeopus , the fore tibia has no apv, and the fore and mid tibiae are blackish brown ( Stackelberg 1930 ). Distribution China ( Heilongjiang ).