Metalimnobia (Metalimnobia) bifasciata Schrank

Metalimnobia (Metalimnobia) bifasciata Schrank

(Figs. 1, 8–11)

Tipula bifasciata Schrank, 1781: 429. Type locality: Linz (Austria).

Limonia xanthoptera Meigen, 1804: 56. Type locality: not given.

Metalimnobia vittata Matsumura, 1911: 63. Type locality: Naiptchi, Sakhalin (Russia). Limnobia avis avis Alexander, 1918: 444. Type locality: Takuhara, Shinano, Honshu (Japan). Limnobia avis flavoabdominalis Alexander, 1918: 445. Type locality: not given (Honshu, Japan).

Diagnosis. Femora yellow with tip brown. Wing brightly yellowish hyaline, with brown pattern along cord and at origin of Rs; cell dm small. Outer gonostylus short and broad, arched at 2/3 length, outer third narrowing into slender spine, with cornute process at dorsal center. Inner gonostylus fleshy with long hairs. Paramere with stem almost straight, inner margin curved into small spine at tip, tip with some short hairs.

Description. Male. Body length 11.0– 14.1 mm, wing 13.0–16.0 mm.

Head. Brownish yellow except median area yellowish brown and rostrum brown. One small median tubercle between eyes. Hairs on head brown. Antenna 2.2–2.7 mm. Scape and pedicel pale yellow, flagellomeres brownish black, suboval to subcylindrical, apical segments elongate, verticils considerably longer than segments. Proboscis and palpus brown with brown hairs.

Thorax. General yellow. Pronotum yellow except dorsal surface brown. Prescutum yellow with two brown stripes. Median region of scutum yellow, lobes brown. Scutellum and mediotergite yellow. Pleura yellow. Hairs on thorax yellow. Coxae yellow; trochanters yellow with inner tip black; femora yellow with tip brown; tibiae yellow; tarsi yellow with tip darker. Hairs on legs brown.

Wing (Fig. 1) brightly yellowish hyaline, with brown pattern along cord and at origin of Rs. Sc2 longer than Sc1, cell dm small, m-cu shortly before fork of M. Halter 1.8–2.3 mm long, yellow except apex of knob brownish yellow.

Abdomen. Tergites 1–3 yellow, tergites 4–9 brownish yellow. Sternites 1–4 yellow, sternites 5–9 yellowish brown with posterior margin brown. Hairs on abdomen yellow.

Hypopygium (Figs. 8–11). Posterior margin of tergite 9 (Fig. 8) emarginate, each lobe with several hairs. Gonocoxite with broad ventromesal lobe. Outer gonostylus (Fig. 9) short and broad, arched at 2/3 length, outer third narrowing into slender spine, with cornute process at dorsal center. Inner gonostylus (Fig. 9) fleshy with long hairs. Paramere (Fig. 10) with stem almost straight, inner margin curved into small spine at tip, with some short hairs.

Female. Body length 10.5–11.5 mm, wing 11.5–13.0 mm. Similar to male.

Specimens examined. 5 males, 2 females, Guizhou: Libo, Yongkang, Laosanlin (740 m), 25°21΄0 7ʺN 105°56΄59ʺE, 2005. VI. 11, Junhua Zhang. 1 male, Hubei: Shennongjia, Caiqi (2000 m), 31°37΄24ʺN 110°32΄43ʺE, 2009. VII. 14 (Light trap), Liang Liang. 1 male, 1 female, Shaanxi: Ankang, Baxianzhen, Yujiaping (2020 m), 32°0 5΄32ʺN 109°14΄51ʺE, 2002. VIII. 9, Xiaodong Yu. 1 female, Shaanxi: Ankang, Zhenping, Shuping (1050 m), 31°51΄18ʺN 109°26΄0 4ʺE, 2002. VIII. 10, Jie Wu. 1 male, Shaanxi: Zhouzhi, Louguantai (450 m), 34°0 5΄21ʺN 108°15΄35ʺE, 1962. VIII. 18, Jikun Yang. 1 male, Ningxia: Jingyuan, Longtan (1880 m), 35°23΄21ʺN 106°20΄54ʺE, 2008. VII. 6, Gang Yao. 1 male, Ningxia: Jingyuan, Liupan mountain, Guamagou (2000 m), 35°29΄0 9ʺN 106°15΄34ʺE, 2008. VII, Jingxian Liu. 1 male, Ningxia: Jingyuan, Liupan mountain, Liangdianxia (2000 m), 35°29΄19ʺN 106°15΄24ʺE, 2007. VII. 18, Qibiao Dong. 1 male, Shanxi: Huanyuan, Hengshan (2000 m), 39°41΄35ʺN 113°41΄59ʺE, 1981. VIII. 9, Jikun Yang. 1 female, Hebei: Chengde, Wuling mountain (1500 m), 40°38΄18ʺN 117°29΄55ʺE, 2006. VII. 4, Hui Dong. 1 female, Hebei: Chengde, Wuling mountain (1500 m), 40°38΄18ʺN 117°29΄55ʺE, 2007. VIII. 22, Kuiyan Zhang. 1 male, Hebei: Chengde, Wuling mountain (1500 m), 40°38΄18ʺN 117°29΄55ʺE, 2008. VII. 7, Shan Huo. 1 male, Hebei: Chengde, Wuling mountain (1500 m), 40°38΄18ʺN 117°29΄55ʺE, 2008. VII. 7, Yan Li. 2 males, Beijing: Mentougou, Xiaolongmen (980 m), 39°57΄57ʺN 115°28΄32ʺE, 2005. V. 12, Junhua Zhang. 1 male, Jilin: Manjiang, Changbai mountain (900 m), 42°0 0΄21ʺN 127°42΄36ʺE, 1983. VIII. 9, Jikun Yang. 1 male, Heilongjiang: Wudalianchi (300 m), 48°31΄0 0ʺN 126°12΄22ʺE, 1985. VIII. 5, Ke Luo. 3 males, 1 female, Liaoning: Huanren, Laotuding (800 m), 41°20΄15ʺN 124°53΄55ʺE, 2009. VII. 24, Yan Li. 1 male, Liaoning: Huanren, Laotuding (800 m), 41°20΄15ʺN 124°53΄55ʺE, 2009. VII. 20, Yan Li.

Distribution. China: Guizhou, Hubei, Shaanxi, Ningxia, Shanxi, Hebei, Beijing, Jilin, Heilongjiang, Liaoning; West Palaearctic; East Palaearctic. First record for China. The specimens from Guizhou (China) also represent the first Oriental record.