Compsiluroides communis Mesnil, 1953

Huang, Yu-Zen & Tachi, Takuji, 2019, Taxonomic review of the genus Compsiluroides Mesnil (Diptera: Tachinidae), with the description of a new species, Zootaxa 4608 (2), pp. 345-356 : 347-350

Compsiluroides communis Mesnil, 1953

( Figs 1–2 , 5–12 , 26 )

Compsiluroides communis Mesnil, 1953: 105 . Holotype Ƌ (Finnish Museum of Natural History, Zoological Museum, Univer- sity of Helsinki , Helsinki , Finland). Type locality: Myanmar, Kachin, Kambaiti , 2000 m.

Compsiluroides proboscis Chao & Sun in Sun et al., 1992: 1171–1172 . Holotype Ƌ ( Institute of Zoology , Chinese Academy of Sciences , Beijing, China). Type locality: China, Hunan, Sangzhi, Mt. Tianping

Specimens examined. China (Shaanxi): 1 ♀, 1 Ƌ ( KUM), N of Banbianghe 1400m, 4km N of Longcaoping, 4.vii.1997, H. Shima & A. Nakanishi leg. ; 1 ♀ ( KUM), Zuoshui-x, Yingpan-linchang , 1850m, 22.vii.1997, H. Shima leg. ; 3 ♀♀, 17 ƋƋ ( KUM), Fuping-x, Dadianzi , 1850–2000m, 5km N of Donghetai, 8.vii.1997, H. Shima & A. Nakanishi leg. ; 8 ƋƋ ( KUM), Zhouzhi-x, Shuimoping , 1500m– 1700m, SSW of Banfangzi, 7.vii.1997, H. Shima leg. ; 3 ƋƋ ( KUM), Zhouzhi-x, Shuimoping , 1500m, SSW of Banfangzi, 3.vii.1997, H. Shima & T. Saigusa leg. ; 1 Ƌ ( KUM), Zhouzhi-x, Shuimoping , 1500m– 1650m, SSW of Banfangzi, 5.vii.1997, H. Shima leg. ; 3 ƋƋ ( KUM), Zhouzhi-x, Shuimoping , 1500m– 1800m, SSW of Banfangzi, 6.vii.1997, T. Saigusa leg. ; 2 ƋƋ ( KUM), Fuping-x, Bridge 3km NW of Donghetai, 1500m, 28.vii.1997, H. Shima leg. ; 1 Ƌ ( KUM), Zuoshui-x, Yingpan–linchang , 1850m, 10.vii.1997 ; 2 ♀♀, 2 ƋƋ ( KUM), Ningxia County, Anakang City, Huoditang (1390m), 12.vii.2013, T. Tachi leg. China (Sichuan): 3 ƋƋ ( KUM), Kanding Xian, Zheduo Shan , 3000m, 19–24.viii.1993, W. Zhang, X. Lin & H. Shima leg. ; 2 ♀♀, 2 ƋƋ ( KUM), Kanding Xian, Yulin , 3000m, 20.viii.1993, H. Shima & X. Lin leg. ; 2 ƋƋ ( KUM), Kanding Xian, Paoma Shan , 2600m, 18.viii.1993, H. Shima & X. Lin leg. ; 3 ♀♀ ( KUM), Yajiang Shi , 2800–3100m, 23.viii.1993, H. Shima & X. Lin leg. China (Yunnan): 1 ♀, 2 ƋƋ ( KUM), Baoshan, Dagaoping , 1900–2400m, 7–9.ix.1996, H. Shima leg. ; 1 Ƌ ( KUM), Nujiang, Laowo , 2000m– 2400m, 4–5.ix.1996, H. Shima leg. ; 1 Ƌ ( KUM), Nujiang, Yaojiaping , 2400m– 2600m, 1–2.ix.1996, H. Shima leg. ; 1 ♀ ( KUM), Dequen Pr Hutiaoxia , 2800–2900m, 24–26.viii.1996, H. Shima leg. Nepal: 1 Ƌ ( KUM), Lelep (1770m), 27 o 31’N, 87 o 47’E, 2.vi.1972, H. Shima leg. ; 1 Ƌ ( KUM), Solukhumbu Dist., Bupsa to Surte , 2300–2835m, 30.vii.1992, H. Kurahashi leg. ; 1 Ƌ ( KUM), Solukhumbu Dist., Chumoa–Lukla 2715–2800m, 3.viii.1992, S. Shinonaga leg. Taiwan: 1 Ƌ ( KUM), Taoyuan, Lalashan , 12.iv.1981, K. Ohara leg. ; 1 Ƌ ( KUM), Nantou, Tsuifeng , 24.vii.1985, H. Shima leg. ; 1 Ƌ ( NMNS), Nantou, Meifeng , 13.vii–10.viii.2004, C.S. Lin & W.T. Wang leg. ; 1 Ƌ ( NMNS), Nantou, Meifeng , 19–20.v.1998, C.S. Lin & W.T. Wang leg.

Diagnosis. Lower facial margin protruded, well visible in lateral view; prementum long, 4–5 times as long as wide; gena wider than 1/5 of eye height in male; surstylus swollen at apex in dorsal view but tapered to apex in lateral view.

Redescription. Body length. 5.4–8.4 mm.

Male. Vertex 0.23–0.30 of head width; inner vertical seta strong, 0.6–0.8 of eye height; outer vertical seta 0.2– 0.5 times as long as inner vertical seta; frontal vitta widened anteriorly, 1.3–2.5 times as wide as fronto-orbital plate at middle; facial ridge with several setae on lower 3/8–9/14; lower facial margin protruded at least by half of width of 1 st flagellomere in lateral view; gena 2/9–2/7 of eye height. Antenna with 1 st flagellomere 2–4 times as long as pedicel, 3–5 times as long as wide. Palpus weakly clavate, 0.8–1.0 times as long as 1 st flagellomere ; prementum 4–5 times as long as wide. Postabdomen. Surstylus tapered to apex in lateral view, usually swollen and triangular at apex in dorsal view, sometimes less swollen; cercus nearly triangular, apical 1/3 slender in dorsal view; apex of phallus wide, nearly triangular in dorsal view.

Female. Differs from male as follows: vertex 0.29–0.32 of head width; gena 1/6–1/3 of eye height.

Distribution. China (Guangdong, Guanxi, Guizhou, Hainan, Heilongjiang, Hong Kong, Hunan, Shaanxi, Sichuan, Tibet, Yunnan), Myanmar, Nepal, Taiwan (see Mesnil 1953; Chao et al. 1998).

Remarks. Compsiluroides proboscis was described based on specimens from Hunan ( Sun et al. 1992) and subsequently treated as a synonym of C. communis by Chao et al. (1998), whereas it was listed as a valid species by O’Hara et al. (2009). Characters such as width of vertex, length of antenna, height of gena, color of palpus and length of proboscis have been used in keys and diagnoses of Compsiluroides species ( Mesnil 1957; Sun et al. 1992; Chao et al. 1998). However, we examined approximately 70 specimens of C. communis and C. proboscis from East Asia in the present study, and these characters were not distinctly or constantly different among these specimens. Therefore, we consider C. proboscis as a synonym of C. communis , following Chao et al. (1998). We also recognize some variation in male postabdominal characters, such as apex of surstylus swollen, from triangular ( Fig. 7 ) to more rounded on posterior edge and curving toward cercus in dorsal view ( Fig. 11 ). Compsiluroides communis is here recorded for the first time from Nepal and Taiwan.

Figures

FIGURE 26. Distribution map for Compsiluroides spp. in East Asia. Black dot = C. communis Mesnil; blue dot = C. flavipalpis Mesnil; red dot = C. meifengensis sp. nov.

FIGURES 1–4. Compsiluroides spp., male heads in lateral view. 1. Compsiluroides communis Mesnil (China, Sichuan; KUM); 2. Compsiluroides communis (China, Shaanxi; KUM); 3. Compsiluroides flavipalpis Mesnil (Japan, Honshu; BLKU). 4. Compsiluroides meifengensis sp. nov. (paratype from Meifeng, Taiwan; BLKU). Arrows indicate protruded lower facial margin. Scale bars: 0.5 mm.

FIGURES 5–10. Compsiluroides communis Mesnil. 5. Female, habitus in lateral view (China, Sichuan; KUM). 6–10. Male postabdomen (Taiwan, Taoyuan; KUM). 6. 5th sternite in ventral view. 7. Epandrium, cerci and surstyli in dorsal view. 8. Epandrium, cercus and surstylus in lateral view. 9. Hypandrium, pregonite, postgonite and phallus in lateral view. 10. Apex of distiphallus in posterior view. Abbreviations: cerc, cercus; distph, distiphallus; epand, epandrium; epiph, epiphallus; hypd, hypandrium; pgt, postgonite; prgt, pregonite; sur, surstylus). Scale bars: 1 mm (Fig. 5); 0.25 mm (Figs 6–10).

FIGURES 11–12. Male postabdomen of Compsiluroides communis Mesnil (China, Yunnan; KUM). 11. Epandrium, cerci and surstyli in dorsal view. 12. Epandrium, cercus and surstylus in lateral view. Scale bar: 0.25 mm.