Chrysotimus hubeiensis
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Ordo: Diptera
Familia: Dolichopodidae
Genus: Chrysotimus
Name
Chrysotimus hubeiensis Wang, Chen & Yang sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Diagnosis
Acr 4–5 irregularly paired. Hind tarsomere 1 with 4–5 short and thick black ventral bristles at base. Epandrium apically with short and wide lateral process, acute apically.
Description
Male. Body length 2.5–2.7 mm, wing length 2.4–2.6 mm.
Head metallic green with gray pollen; frons and face brilliant. Hairs and bristles on head yellow. Ocellar tubercle weak, with 2 very long oc and 2 very short posterior hairs. Lower postocular bristles (including ventral hairs) pale. Antenna blackish; first flagellomere (Fig. 7) blackish, rather short, about 0.6 times as long as wide; arista dorsal, with basal segment very short. Proboscis brown, with brown hairs; palpus pale yellow, with pale hairs and 2 pale yellow apical bristles.
Thorax metallic green with pale gray pollen, mesonotum and scutellum brilliant. Hairs and bristles on thorax yellow; 6 dc, 4–5 irregularly paired acr short and hair-like; scutellum with 2 pairs of bristles. Propleuron with 1 brown bristle on lower portion. Legs including coxae yellow with 5th tarsomeres brown. Hairs and bristles on legs dark yellow; coxae with yellowish hairs and bristles; fore coxa with 6–7 anterior and apical bristles, mid coxa with 2–3 anterior and apical bristles, hind coxa with 1 brown outer bristle near middle. Mid femur with 1 av apically; hind femur with 1 short av and 1 short pv apically. Mid tibia with 2 ad and 2 pd, apically with 3 bristles; hind tibia with 2 ad and 1 pd, apically with 3 bristles. Hind tarsomere 1 with 4-5 short and thick black ventral bristles at base. Relative lengths of tibia and 5 tarsomeres of legs. LI 4.5 : 2.3 : 1.2 : 0.9 : 0.6 : 0.7; LII 6.2 : 3.4 : 1.4 : 1.0 : 0.5 : 0.5; LIII 6.8 : 2.8 : 1.8 : 1.2 : 1.0 : 0.6.
Wing hyaline; veins brownish, R4+5 and M parallel apically; CuAx ratio 0.3. Squama dark yellow with brown hairs. Halter pale yellow.
Abdomen metallic green with pale gray pollen, dorsum brilliant, sterna 1-2 yellow. Hairs and bristles on abdomen brown.
Male genitalia (Fig. 8) dark brown: Epandrium distinctly longer than wide, apically with short and wide lateral process, process acute apically; surstylus slender and finger-like; cercus short and thick, with round apex.
Female
Unknown.
Type material
Holotype ♂, Hubei: Shennongjia, Dalongtan pound (31°75'N, 110°67'E), 1.VII.2009, Qifei Liu. Paratypes, 5♂♂, same data as holotype. Type specimens are stored in 75% ethanol.
Distribution
Known only from the type locality in Hubei.
Remarks
This new species is similar to Chrysotimus lijianganus Yang & Saigusa, but may be separated from the latter by 2 pd on hind tibia, 4-5 black ventral bristles on hind tarsomere 1, and slender, finger-like surstylus. In Chrysotimus lijianganus, the hind tibia has 1 pd, hind tarsomere 1 has 7–8 black ventral bristles at base, and the surstylus is very wide (Yang and Saigusa 2001b[1]).
Etymology
The specific epithet derives from the type locality Hubei.
Original Description
- Wang, M; Chen, H; Yang, D; 2012: Species of the genus Chrysotimus Loew from China (Diptera, Dolichopodidae) ZooKeys, 199: 1-12. doi
Other References
- ↑ Yang D, Saigusa T (2001b) New and little known species of Dolichopodidiae (Diptera) from China (IX). Bulletin de l’Institut Royal des Sciences Naturelles Belgique, Entomologie 71: 165–188.
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