Tipula (Acutipula) pseudocockerelliana Yang and Yang, 1995

Li, Yan & Yang, Ding, 2010, Species of the subgenus Acutipula Alexander from Henan, east-central China (Diptera, Tipulidae), Zootaxa 2648, pp. 32-44 : 36-38

Tipula (Acutipula) pseudocockerelliana Yang and Yang, 1995

( Figs. 2 , 10–13 )

Tipula (Acutipula) pseudocockerelliana Yang and Yang, 1995: 332 . Type locality: China: Gansu (Wenxian, Dangchang), Hebei (Xinglong)

Diagnosis. Tergite 9 with median lobe basally about 1/5 width of tergite 9, apically very slender, bearing black spicules. Sternite 8 with posterior margin medially produced into a quadrate process, along medial longitudinal carina with a fringe of long yellow dense setae. Clasper of gonostylus with basal beak short and obtuse at tip; outer beak produced medially, extended into an acute point at tip, with dense erect coarse yellow setae, subterminally with a nearly triangular or trapeziform compressed process; apex of clasper of gonostylus with dense long erect coarse yellow setae.

Description. Male. Body length 20–21 mm, wing 22–24 mm.

Head. Rostrum dark reddish brown, with slender nasus. Vertex and occiput blackish brown. Orbits paler. Pollen on head grayish white. Hairs on head black. Antenna nearly 5 mm long; scape and pedicel brownish yellow; flagellum yellowish brown, each segment basally blackish brown and slightly enlarged except first one, verticils nearly one and a half length of corresponding segments. Probocis dark brown; palpus blackish brown except last two segments yellowish brown, all with black hairs.

Thorax. General brown with grayish white pollen. Pronotum brown; prescutum gray, with four brown longitudinal stripes, each with inconspicuous darker margins, lateral ones darker and shorter, either side with sparse hairs; anterior and lateral margins of prescutum reddish brown; median area of V-shaped transverse mesonotal suture dark reddish brown; scutum grayish brown, each lobe with two inconspicuous brown spots, hairs on lateral margins; scutellum and mediotergite grayish brown. Pleura yellow; laterotergite brown with yellowish pollen. Hairs on thorax yellowish brown. All coxae and trochanters yellow with dense yellow hairs; femora brownish yellow with tips dark brown; tibiae yellowish brown with tips dark brown; tarsi yellowish brown; tibial spurs 1–2–2; claws reddish brown with tips black, each with a reddish brown basal tooth and a black median tooth. Hairs on legs black. Wing ( Fig. 2 ) grayish yellow, almost transparent. Cells C and Sc yellowish brown; stigma brown; area from stigma to cell dm along cord white; cell bm with an inconspicuous light brown cloud at tip and white area inside; cell CuA2 with a light grayish brown spot at middle and white areas at both sides of the spot. Veins dark brown. Halter dark brown.

Abdomen. Tergites 1–5 obscure yellow, with brown longitudinal stripes near lateral margin; sternites 1–5 yellow. Segments 6–9 blackish brown. Hairs black on tergites, yellow on sternites.

Hypopygium ( Figs. 10–13 ). Tergite 9 ( Fig. 13 ) with median lobe basally about 1/5 width of tergite 9, apically very slender, bearing black spicules. Sternite 8 with posterior margin medially produced into a quadrate process, along medial longitudinal carina with a fringe of long dense yellow setae. Lobe of gonostylus ( Fig. 12 ) large, flattened, broadest near base, narrowed to subacute apex. Clasper of gonostylus ( Fig. 11 ) with basal beak short and obtuse at tip; outer beak produced medially, extended into an acute point at tip, with dense erect coarse yellow setae, subterminally with a nearly triangular or trapeziform compressed process; apex of clasper of gonostylus with dense long erect coarse yellow setae.

Female. Unknown.

Specimens examined. Holotype male, Gansu: Wenxian, Gaolou Mountain (33° 03' N, 104° 42' E, 1800 m), 1980. VIII. 7, Jikun Yang, Fasheng Li. Paratypes: same data as holotype, 2 males; Gansu: Dangchang (34° 03' N, 104° 24' E, 1730 m), 1980. VIII. 10, Chunhua Yang, 1 male; Hebei: Xinglong (40° 25' N, 117° 30' E), 1989. VIII. 19, Chunqing Yang, 4 males. Henan: Luoyang, Songxian, Baiyun Mountain (33° 40' N, 111° 52' E), Ding Yang: 2002. VII. 18 (light trap), 1 male; 2002. VII. 19, 1 male; 2002. VII. 20 (light trap), 1 male; 2002. VII. 21, 2 males; 2002. VII. 24, 1 male; 2002. VII. 25 (light trap), 1 male; same locality (1500 m), Kuiyan Zhang: 2004. VII. 14, 3 males; 2004. VII. 15, 3 males; Ding Yang, 2008. VIII. 14 (light trap), 2 males; Kuiyan Zhang, 2008. VIII. 15 (light trap), 1 male. Henan: Luoyang, Songxian, Tianchi Mountain (34° 14' N; 111° 51' E), 2004. VII. 13, Kuiyan Zhang, 3 males; 2007. VII. 12, Bingzhen Yan, 1 male; 2007. VII. 13, Zhiliang Wang, 1 male. Henan: Luoyang, Yiyang, Huaguo Mountain (34° 20' N, 111° 53' E), 2006. VII. 27, Shan Huo, 4 males; 2006. VIII. 2, Shan Huo, 1 male; 2006. VIII. 3, Junhua Zhang, 1 male. Henan: Nanyang, Neixiang, Baotianman (33° 02' N, 111° 50' E), 2004. VII. 25, Hui Dong, 1 male; same locality (1400 m), 2008. VIII. 11, Xingyue Liu, 2 males.

Distribution. China (Henan, Gansu, Hebei).

Remarks. This species is quite similar to T. cockerelliana Alexander, 1925 from Russia. But it can be separated from the latter by the shape of the tergite 9. In cockerelliana , the median lobe of the tergite 9 is relatively shorter and broader at base ( Alexander 1934; Savchenko 1961).

Figures

FIGURES 1 – 5. Wings (male). 1. Tipula (Acutipula) pseudacanthophora Yang and Yang, 1993; 2. Tipula (Acutipula) pseudocockerelliana Yang and Yang, 1995; 3. Tipula (Acutipula) gansuensis Yang and Yang, 1995; 4. Tipula (Acutipula) henanensis sp. nov.; 5. Tipula (Acutipula) buboda Yang and Yang, 1993.

FIGURES 10 – 13. Tipula (Acutipula) pseudocockerelliana Yang and Yang, 1995 (male). 10. Hypopygium, lateral view; 11. clasper of gonostylus, lateral view; 12. lobe of gonostylus, lateral view; 13. ninth tergite, dorsal view.