Compsiluroides flavipalpis Mesnil, 1957

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 : 350-353

Compsiluroides flavipalpis Mesnil, 1957

( Figs 3 , 13–19 , 26 )

Compsiluroides flavipalpis Mesnil, 1957: 22 . Holotype Ƌ (Canadian National Insect Collection, Ottawa , Canada). Type locality: Japan, Hokkaido, Obihiro.

Specimens examined. China (Shaanxi): 6 ♀♀ ( KUM), Fuping-x, Bridge 3km NW of Donghetai, 1500m, 2.vii.1997 , H. Shima & A. Nakanishi leg.; 3 ♀♀, 1 Ƌ ( KUM), Zhouzhi-x, Shuimoping , 1500m– 1700m, SSW of Banfangzi, 6– 7.vii.1997 , A. Nakanishi, H. Shima leg.; 6 ƋƋ ( KUM), Fuping-x, Bridge 3km NW of Donghetai, 1500m, 2.vii.1997 , A. Nakanishi & H. Shima leg.; 3 ƋƋ ( KUM), same place as preceding, 28.vii.1997 , H. Shima leg.; 2 ƋƋ ( KUM), 8km N Longcaoping , 1300–1400m, 27.vii.1997 , A. Nakanishi & T. Saugusa leg. Japan (Hokkaido): 1 Ƌ ( BLKU), Sapporo city, Nishino , 8.vii.1996 , A. Inoue leg.; 1 ♀ ( BLKU), Ashoro-cho, Kamitoshibetsu , 11.viii.1996 , T. Tachi leg.; 1 ♀ ( BLKU), Samani-cho, Mt. Apoi , 18.viii.1996 , T. Tachi leg.; 2 ♀♀ ( BLKU), Touro, Sibechat , 1.viii.1997 , R. Matsumoto leg.; 2 ♀♀ ( BLKU), Ashoro exp. for., Ashoro t., 24.vii.2006 , T. Tachi leg.; 1 ♀ ( BLKU), Chimikeppu Lake, Tsubetsu t., 25.vii.2006 , T. Tachi leg. Japan (Honshu): 1 Ƌ ( BLKU), Nagano, Togakushi , 24.vi.1996 , T. Tachi leg.; 1 Ƌ ( BLKU), Nagano, Azumi v., Shimashimadani , 30.vi.1996 , T. Tachi leg.; 2 ƋƋ ( BLKU), Nagano, Okuwa v., Ogawa , 2-3.vii.1996 , T. Tachi leg.; 2 ♀♀ ( BLKU), Nagano, okuwa v., Inagawa , 3.vii.1996 , T. Tachi leg.; 3 ♀♀, 3 ƋƋ ( BLKU), Yamanashi, Nirasaki C., Sawaraike, 11-12.vii.1996 , T. Tachi leg.; 1 ♀ ( BLKU), Fukushima, Hinoemata , 22.vii.1996 , T. Tachi leg.; 2 ♀♀ ( BLKU), Kaneyama, Sudama town , Yamanashi Pref., 30.viii.1996 , M. Sueyoshi leg.; 1 ♀ ( BLKU), Kamiwatari , Shizuoka city, Shizuoka Pref., 17.vii.1997 , M. Sueyoshi leg.; 1 Ƌ ( BLKU), Sengokubara, Hakone town , Kanagawa Pref., 18.vii.1997 , M. Sueyoshi leg.; 2 ƋƋ ( BLKU), Penkenushi, Hidaka t., 24.vii.1997 , R. Matsumoto leg.; 1 Ƌ ( BLKU), Rausudake, Rausu t., 27.vii.1997 , R. Matsumoto leg.; 1 ♀ ( BLKU), Sengokubara, Hakone town , Kanagawa Pref., 28.vii.1997 , M. Sueyoshi leg.; 2 ƋƋ ( BLKU), Mt. Aoso , Zao town, Miyagi Pref., 11.viii.1997 , M. Sueyoshi leg.; 4 ♀♀ ( BLKU), Hiroshima, Geihoku t., Mt. Kakezu , 17-18.vii.1998 , T. Tachi leg.; 1 Ƌ ( BLKU), Nagano pref., Ina c., Ogurogawa val. (1300m), 24.vii.1998 , T. Tachi leg.;1 Ƌ ( BLKU), Iwate, Akka, Iwaizumi Town , 20.vii.2001 , T. Tachi leg.; 1 Ƌ ( BLKU), Gifu, Nakatsugawa C., Tengumoriyama (800-1338m), 25.vii.2013 , T. Tachi leg.; 2 ♀♀, 4 ƋƋ ( BLKU), Aichi, Kitashitaragun, Chausuyama (1415m), 26- 30.vii.2013 , T. Tachi leg. Japan (Kyushu): 1 ♀ ( BLKU), Hikosan, Fukuoka, Soeda t., 15.vi.1996 , R. Matsumoto leg.; 1 Ƌ ( BLKU), Kumamoto, Haki , 5.viii.1998 , M. Sueyoshi leg. Taiwan: 2 ♀♀ ( KUM), Hualien, Tzuen–Tayulin , 22.vii.1985 , H. Shima & S. Shinonaga leg.; 1 ♀ ( TARI), Nantou, Tsuifeng , x.1985 , K. S. Lin leg.

Diagnosis. Lower facial margin not protruded in lateral view; prementum short, about 3 times as long as wide; gena narrower than 1/5 of eye height in female, usually narrower than in C. communis ; surstylus swollen at apex in dorsal and lateral views.

Redescription. Body length. 6.3–8.4 mm.

Male. Vertex 0.23–0.27 of head width; inner vertical seta strong, 0.6–0.9 of eye height; outer vertical seta present, about 0.4 times as long as inner vertical seta; frontal vitta widened anteriorly, 1.0–1.3 times as wide as fronto-orbital plate at middle; parafacial 0.8–1.0 times as wide as 1 st flagellomere at mid-height; facial ridge with several setae on lower 2/5–4/7; lower facial margin not protruded in lateral view; gena 1/7–1/5 of eye height; 1 st flagellomere 2.8–4.5 times as long as pedicel, about 3.5 times as long as wide; arista thickened on about basal 0.15. Palpus 0.7–0.9 times as long as 1 st flagellomere ; prementum about 3 times as long as wide. Postabdomen. Surstylus slender, swollen at apex, with many setae in apical half in lateral view, swollen at middle and apex and curved inward in apical 1/ 3 in dorsal view; cercus nearly triangular in dorsal view; postgonite nearly rectangular and tapering apically; distiphallus narrowly trapezoidal in dorsal view.

Female. Differs from male as follows: vertex 0.26–0.31 of head width; gena 1/6–1/5 of eye height.

Distribution. China (Guangdong, Guizhou, Sichuan, Shaanxi, Yunnan), Taiwan, Japan (Hokkaido, Honshu, Shikoku, Kyushu), southern Far East Russia.

Host. One specimen was reared from a Pachyprotasis Hartig ( Hymenoptera : Tenthredinidae ) species in Japan ( Mesnil 1962).

Remarks. O’Hara et al. (2009) suggested that the previous records of C. flavipalpis from China might be misidentifications and that the species was unlikely to occur in China. Based on the above examined material, we confirm that C. flavipalpis is widely distributed in China and East Asia, and record it for the first time from 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 13–18. Compsiluroides flavipalpis Mesnil. 13. Female, habitus in lateral view (Japan, Honshu; BLKU). 14–18. Male postabdomen (Japan, Honshu; BLKU). 14. 5th sternite in ventral view. 15. Epandrium, cerci and surstyli in dorsal view. 16. Epandrium, cercus and surstylus in lateral view. 17. Hypandrium, pregonite, postgonite and phallus in lateral view. 18. Apex of distiphallus in posterior view. Scale bars: 1 mm (Fig. 13); 0.25 mm (Figs 14–18).

FIGURE 19. Female postabdomen of Compsiluroides flavipalpis Mesnil (Japan, Honshu; BLKU). Abbreviations: cerc, cerci; epiprct, epiproct; hyprct, hypoproct; st, abdominal sternite; t, abdominal tergite. Scale bars: 0.25 mm.