Dinera xuei, Zhang & Shima, 2006

Zhang, Chun-Tian & Shima, Hiroshi, 2006, A systematic study of the genus Dinera Robineau-Desvoidy from the Palaearctic and Oriental regions (Diptera: Tachinidae), Zootaxa 1243 (1243), pp. 1-60 : 54-57

Dinera xuei sp. nov.

Figs. 63–66

Diagnosis

Small slender pale yellowish gray fly; 2+3 dc, costal spine present, abdominal syntergite 1+2 excavated only at base with 2 median marginal setae in both sexes.

Body length 6.0– 8.8 mm.

Description

Male. Head black in ground color, face pale reddish yellow and gena reddish brown, with grayish white pruinosity; frontal vitta dark brown and lunule reddish brown; antenna dark brown to black; palpus dark brown, slightly paler basally. Frons strongly narrowed in front of ocellar triangle, at the narrowest point 1/18–1/20 head width; parafacial about 3 times as wide as flagellomere 1, facial carina high, anterior surface weakly rounded, arched in lateral view; gena slightly more than 2/5 eye height; lower margin of face protruding forward. Inner vertical seta fine hair­like, about 1/4 as long as ocellar seta; outer vertical seta hair­like; ocellar seta strong, more than 1/2 eye height; 8–9 inclinate frontal setae, longest seta slightly shorter than ocellar seta; fronto­orbital plate with only a few minute black hairs; parafacial bare; vibrissa inserted above vibrissal angle by about length of pedicel; upper occiput with 2–3 rows of black hairs behind postocular setae. Antenna falling short of lower margin of face by about 2/5 length of flagellomere 1; base of antenna nearly level with lower 1/4 of eye height; pedicel with a long seta that is as long as flagellomere 1; flagellomere 1 about 4 times as long as pedicel; total width of arista including plumosity 2–2.5 times as wide as flagellomere 1. Prementum slightly shorter than eye height; palpus about 1.2 times as long as pedicel and flagellomere 1 combined.

Thorax black in ground color, with dense yellowish gray pruinosity; 5 black longitudinal vittae on presutural area of scutum and 3 black vittae on postsutural scutum, 3 median vittae of presutural area sometimes diffusing marginally and fused with each other. Postpronotal lobe with 3 setae; 0–1+2 ac, 2+3 dc, 0+2 ia; 3 sa, anterior one smaller; scutellum without distinct discal setae, subapical scutellar seta strong, about 2.5 times as long as scutellum and slightly longer than basal seta; apical scutellar seta 0.8 as long as subapical seta. Wing hyaline, evenly and faintly tinged with pale brown; tegula black and basicosta reddish yellow; calypter yellowish. Costal spine short but distinct; relative length of costal second, third and fourth sections approximately as 4:9:5; vein M from dm­cu crossvein to its bend about 1.5 times distance between the bend and wing margin; cell r 4+5 open. Legs black, pulvilli yellowish. Fore tibia with 2 p; mid tibia with 1 ad, 3–4 pd and 1 v; hind tibia with 3–5 ad, 2 pd and 1–2 v, apical pv strong.

Abdomen long ovate, black in ground color, with densely yellowish gray pruinosity, bases of strong setae sometimes narrowly tinged with brown. Syntergite 1+2 excavated only at base, with 2 median marginal and 1–2 lateral marginal setae; tergite 3 with 2 median marginal and 1–2 lateral marginal setae; tergites 4 and 5 each with a row of strong marginal setae, tergite 5 with several fine irregularly set discal setae. Sternite 1 with pale hairs; posterior lobe of sternite 5 bluntly rounded at apex, V­shaped median cleft deep and moderately wide. Male terminalia. Cerci long and strongly narrowed on apical 2/3, pointed apically; surstylus narrowed on apical half and bent outward in dorsal view, wide and bluntly rounded in lateral view; pregonite long and bent, postgonite shorter than basiphallus; distiphallus long, membranous apical part about 1.5 times as long as sclerotized basal part; ejaculatory apodeme small; aedeagal apodeme slender and pointed apically.

Female. Differing from male as follows: Vertex about 1/3 head width; frontal vitta nearly parallel­sided, slightly narrower than fronto­orbital plate at middle; gena about 3/5 eye height; inner vertical seta strong, slightly shorter than eye­height; outer vertical seta about 1/2 as long as inner seta; 1 outwardly directed prevertical seta, slightly shorter than outer vertical seta; ocellar seta 3/4 as long as inner vertical seta; 2 strong proclinate orbital setae, subequal in length and slightly longer than ocellar setae; 4–5 inclinate frontal setae; base of antenna nearly level with lower 1/4 of eye height. Mid tibia with 2 ad, 2–3 pd and 1 v; hind tibia with 3 ad, 2 pd and 1 v; claw and pulvillus shorter than 5th tarsomere. Abdomen more ovate; median discal setae absent on tergites.

Type material

Holotype ♂, CHINA, Hunyuan Forestry Station, Hunyuan, Shanxi, 13.vii.1985, M.­f. Wang ( SNUC) . Paratypes CHINA. Inner Mongolia: 1 male, 1 female, Keqi, Zaowudameng Prefecture, 10.viii.1972, W.­q. Xue . Shanxi: 10 males, 1 female, same data as holotype; 2 males, Tiechang, Jiaokou, 16.vii.1992, M.­f. Wang; 5 females, Mt. Wutai , 10.viii.1985; 15 males, 2 females, Mt. Heng , Hunyuan, 28.vi.1980; Guangling, 21 males, 3 females, Xianglutai, 19.vii.1985; 13 males, Shangbaiyang, 9.viii.1980 and 9.vii.1985; 4 males, Haizi, 21.vii.1982; 1 male, Mt Heicha , Xingxian, 15.vii.1993; 1 male, Matian, Zuochuan, 12.vi.1999; 1 male, Mt Yuanding , 10.xi.1989; 1 male, Dayingpan, Kelan, 17.vii.1988; 1 male, Shahukou, Youyu, 17.vi.1982, all by M.­f. Wang . Sichuan: 2 males, Mt Paoma , 14.vii.2005, L. Chang . Gansu: 1 male, 3 females, Shatan Forestry Station , Zhouqu, 14.vii.1999, H.­j. Wang ( SNUC) . Gansu: Dahebagou, 1700–2300 m, Dangchang, 9.vii.1998, 1 male, 2 females, J. Chen; 1 male, 1 female, X.­z. Zhang; 3 males, 2 females, S.­y. Wang; Shatan Forestry Station , 2400 m, Zhouqu, 16–17.vii.1999, 14 males, 5 females, H. Wang; 3 males, J. Yao; 8 males, 5 females, same locality as preceding, 2350 m, 4.vii.1998, X.­z. Zhang; 1 female, Huangjialu Forest Station , 2100 m, Dangchang, 8.vii.1998, D.­c. Yuan; Qiujiaba, 2250–2650 m, Wen Xian, 28–30.vi.1998, 3 males, J. Yao; 1 male, S.­y. Wang; 2 males, X.­z Zhang; 1 male, D.­c. Yuan . Shaanxi: Liangfengya, 1740–2150 m, Foping , 28.vi.1999, 2 males, Y. Zhang; 1 male, T. He; Dahongqu, 2500 m, Liuba Xian, 20.vii.1998, 2 males, 1 female, J. Yao; 1 male, 4 females, J. Chen ( IZCAS) . Sichuan: 6 males, 10 females, Hualong and Huasheng, 2800–3000m, Songpan , 5–8.viii.1993, H. Shima; Mt. Zheduo , 4000m, Kangding, 21.viii.1993, 3 males, 1 female, H. Shima, 1 male, 3 females, I. Kanazawa ( BLKU) .

Etymology

Specific epithet is dedicated to Prof. Wanqi Xue for his contributions to the systematics of Chinese Diptera . Remarks

This species resembles D. carinifrons , but differs from it in having a yellowish gray body, narrower vertex, and 2+3 dc.