Syrphoctonus tarsatorius ( Panzer, 1809 )

Syrphoctonus tarsatorius ( Panzer, 1809) View in CoL

(Figs 22 A, B)

Bassus tarsatorius Panzer, 1809: 102 .

Bassus exsultans Gravenhorst, 1829: 328 .

Bassus insignis Gravenhorst, 1829: 349

Bassus flavus Desvignes, 1862: 219 .

Bassus indicus Cameron, 1909: 728

Homotropus eximius Habermehl 1922: 356 .

Homotropus flavitrochanterus Uchida 1957: 99 .

Homotropus tarsatorius : Dasch, 1964: 140.

Homotropus tarsatorius : Townes et al., 1965: 405.

Syrphoctonus tarsatorius View in CoL : Klopfstein, 2014b: 98 View Cited Treatment .

Specimens examined. JAPAN: [Honshu] 1F, Ibaraki Pref., Goka , 12. IV. 1999, M. Uchida leg. ( KPMNH); 1F1M, Saitama Pref., Urawa, Tajima , 9. IV. 1999, T. Nambu leg.( KPMNH); 2M, Tokyo, Akiruno City, Ninomiya, Tamagawariverside , 3. III. 2010, K. Watanabe leg. (KPMNH) ; 1M, Tokyo, Takao, Hikagesawa, Kokesawa , 3. III. 2007, K. Watanabe leg. (KPMNH) ; 1F, Kanagawa Pref., Ayase City, Yoshioka, Irigaya , 8. IV. 2000, I. Waki leg. ( KPMNH); 1F, Kanagawa Pref., Ebina City, Sagamigawa , 30. IV. 2006, M. Oishi & R. Watanabe leg. ( KPMNH); 1M, Kanagawa Pref., Atsugi City , 25. IV. 2008, A. Sakai leg. ( KPMNH); 1F, Kanagawa Pref., Atsugi City, Nakaogino , 26. IV. 2008, M. Gunji leg. ( KPMNH); 1M, Kanagawa Pref., Atsugi City, Sanda , 26. IV. 2008, H. Katahira leg. ( KPMNH); 2M, Kanagawa Pref., Hiratsuka City, Mt. Komayama, Shonandaira , 21. IV. 2007, K. Watanabe leg. ( KPMNH); 1M, Kanagawa Pref., Miyamae-ku, Sugao-kouen , 26. V. 2001, T. Ishizaki leg. (KPMNH) ; 1F, Kanagawa Pref., Hadano City, Mt. Koubouyama , 5. IV. 2007, K. Watanabe leg. ( KPMNH); 1M, ditto, 15. IV. 2007, K. Watanabe leg. ( KPMNH); 1F, ditto, 29. IV. 2007, K. Watanabe leg. ( KPMNH); 1M, ditto, 6. IV. 2008, K. Watanabe leg. ( KPMNH); 1F1M, ditto, 12. IV. 2008, K. Watanabe leg. ( KPMNH); 1F4M, ditto, 18. IV. 2010, K. Watanabe leg. ( KPMNH); 1M, Shizuoka Pref., Higashiizu Town, Inatori , 19. III. 2009, T. Muraki leg. (KPMNH) ; 3F, Nagano Pref., Otaki Vil., Mt. Ontakesan, Hakkaisan , 5. VIII. 2010, K. Watanabe leg. (KPNMH) ; 9F, ditto, 6. VIII. 2010, K. Watanabe leg. (KPNMH) ; 1F, ditto, 7. VIII. 2010, K. Watanabe leg. (KPNMH) ; 6F, ditto, 8. VIII. 2010, K. Watanabe leg. (KPNMH) ; 33F2M, ditto, 5–9 VIII 2010, K. Watanabe leg. (KPNMH) ; [Amami Isls.] 1M, Kagoshima Pref., Tokunoshima Is., Isen-cho, Nakayama , 21. III. 2008, K. Watanabe leg. (KPNMH) .

Diagnosis. See Klopfstein (2014b).

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, Hachijojima Is., Izuoshima Is., Amamioshima Is., and Tokunoshima Is.). Outside Japan, this species is widely distributed in Holarctic region ( Yu et al. 2016).

Bionomics. This species was collected by light trap ( Yang et al. 2006). In Japan, adults were collected in broadleaved forests and grasslands. In Japan, three hoverfly species, Epistrophe omogensis (Siraki & Edashige, 1953), Metasyrphus frequens Matsumura, 1917 , Syrphus vitripennis Meigen, 1822 have been recorded as host ( Uchida 1957; Minamikawa 1969). Outside Japan, 15 hoverfly species, Epistrophe euchroma (Kowarz, 1885) , Episyrphus balteatus (De Geer, 1776) , Eupeodes corollae (Fabricius, 1794) , Eupeodes luniger (Meigen, 1822) , Eupeodes nitens (Zetterstedt, 1843) , Melanostoma mellinum (Linnaeus, 1758) , Neocnemodon vitripennis (Meigen, 1822) , Paragus quadrifasciatus Meigen, 1822 , Platycheirus albimanus (Fabricius, 1781) , Platycheirus scutatus (Meigen, 1822) , Scaeva pyrastri (Linnaeus, 1758) , Sphaerophoria scripta (Linnaeus, 1758) , Dasysyrphus venustus (Meigen, 1822) , Syrphus ribesii (Linnaeus, 1758) , Syrphus torvus Osten Sacken, 1875 have been recorded as hosts ( Cameron 1913; Coulon 1934; Dusek, Laska & Sedivy 1979; Goidanich 1928; Hedwig 1950; Horstmann 1970; Kettner 1970; Ngamo, Delabye, Stilmant & Hance 1998; Pisica & Petcu 1972; Pisica 1983; Pschorn-Walcher & Zwölfer 1956; Salt 1936; Scott 1939; Thirion 1994; Wnuk 1974). Anthonomus pomorum (Linnaeus, 1758) ( Coleoptera , Curculionidae ) and Coccinella septempunctata Linnaeus, 1758 ( Coleoptera, Coccinellinae ) have also been recorded as hosts ( Keler 1940; Schaefer & Semyanov 1992), but are considered doubtful records.

Remarks. This is the first record of this species from Tokunoshima Island.