Tipula (Acutipula) pseudacanthophora Yang and Yang, 1993

Li, Yan & Yang, Ding, 2010, Species of the subgenus Acutipula Alexander from Henan, east-central China (Diptera, Tipulidae), Zootaxa 2648, pp. 32-44 : 33-36

Tipula (Acutipula) pseudacanthophora Yang and Yang, 1993

( Figs. 1 , 6–9 )

Tipula (Acutipula) pseudacanthophora Yang and Yang, 1993: 98 . Type locality: China: Shaanxi (Huashan Mountain).

Diagnosis. Wing with basal regions of cells M1, M2, M3 and CuA1 white. Tergite 9 with median lobe basally about 1/3 width of tergite 9, apically narrowed, bearing black spicules. Sternite 8 simple and short, with sparse short hairs only. Lobe of gonostylus flattened, with apex truncated or slightly oblique. Clasper of gonostylus with basal beak compressed, like goose head; outer beak produced apically, extended into a slender acute spine; apex of clasper of gonostylus with about ten erect coarse yellow setae.

Description. Male. Body length 19–21 mm, wing 21–23 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 6 mm long; scape and pedicel brownish yellow; flagellum yellowish brown, each segment basally blackish brown and slightly enlarged except first one, verticils nearly as long as corresponding segments. Probocis blackish brown; palpus blackish brown, 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 dark margined grayish brown spots, hairs on lateral margins; scutellum and mediotergite grayish brown. Pleura yellow with anepisternun light brownish 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. 1 ) grayish yellow, almost transparent. Cell C yellowish brown; cell Sc and stigma brown; area from stigma to cell dm along cord white; cell bm with a light brown cloud at tip and white area inside; cell CuA2 with a grayish brown spot at middle and white areas at both sides of the spot; cells M1, M2, M3 and CuA1 with basal regions white. Veins dark brown. Halter dark brown.

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

Hypopygium ( Figs. 6–9 ). Tergite 9 ( Fig. 9 ) with median lobe basally about 1/3 width of tergite 9, apically narrowed, bearing black spicules. Sternite 8 simple and short, with sparse short hairs only. Lobe of gonostylus ( Fig. 8 ) flattened, with apex truncated or slightly oblique. Clasper of gonostylus ( Fig. 7 ) with basal beak compressed, like goose head; outer beak produced apically, extended into a slender acute spine; apex of clasper of gonostylus with about ten erect coarse yellow setae.

Female. Unknown.

Specimens examined. Holotype male, Shaanxi: Huashan Mountain (34° 32' N, 110° 05' E), 1986. VII. 13, Yujun Chang. Henan: Luoyang, Songxian, Baiyun mountain (33° 40' N, 111° 52' E), Ding Yang: 2002.

VII. 18 (light trap), 1 male; 2002. VII. 21 (light trap), 1 male; 2002. VII. 22 (light trap), 3 males; 2002. VII. 24 (light trap), 1 male; 2002. VII. 25 (light trap), 1 male; same locality (1500 m), 2004. VII. 16, Kuiyan Zhang, 7 males; 2008. VIII. 14 (light trap), Ding Yang, 8 males; 2008. VIII. 15 (light trap), Kuiyan Zhang, 3 males. Henan: Luoyang, Yiyang, Huaguo Mountain (34° 20' N, 111° 53' E), Shan Huo: 2006. VII. 27, 4 males; 2006. VIII. 2, 1 male; 2006. VIII. 3, 1 male; 2006. VIII. 3, Junhua Zhang, 1 male.

Distribution. China (Henan, Shaanxi).

Remarks. This species is quite similar to T. acanthophora Alexander, 1934 from Russia. But it differs from the latter in the shape of the lobe of gonostylus and clasper of gonostylus. In acanthophora , the apex of the lobe of gonostylus is round; the outer beak of the clasper of gonostylus is thicker than that in pseudacanthophora ( 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 6 – 9. Tipula (Acutipula) pseudacanthophora Yang and Yang, 1993 (male). 6. Hypopygium, lateral view; 7. clasper of gonostylus, lateral view; 8. lobe of gonostylus, lateral view; 9. ninth tergite, dorsal view.