A revision of Japanese Torymus Dalman (Hymenoptera: Torymidae) Author Matsuo, Kazunori text Zootaxa 2020 2020-03-31 4758 3 401 441 journal article 10.11646/zootaxa.4758.3.1 16d9ff47-9a8c-48fc-93be-078030e0ece8 1175-5326 3734584 18E2818F-2248-45A6-AB96-14A41302A727 Torymus cerri ( Mayr, 1874 ) Syntomaspis cerri Mayr, 1874: 79 . Callimome cerri (Mayr) : Hoffmeyer, 1930: 236 . Torymus cerri (Mayr) : Graham and Gijswijt, 1998: 73 . Specimens examined. 2 ♀ , emerged on 31 March 2008 from galls of Andricus sp. on Quercus serrata collected by M. Shiga on 12 October 2007 from Fujimoto, Tsukuba, Ibaraki (BLKU); 1 ♀ and 6 ♂ , emerged on 31 March 2008 from galls of Andricus sp. on Quercus serrata collected by M. Shiga on 18 October 2007 from Fujimoto, Tsukuba, Ibaraki (BLKU); 2 ♀ , emerged on 31 March 2008 from galls of Andricus sp. on Quercus serrata collected by M. Shiga on 25 October 2007 from Fujimoto, Tsukuba, Ibaraki (BLKU); 1 ♀ , emerged on 4 April 2008 from a gall of Andricus sp. on Quercus serrata collected by M. Shiga on 11 December 2007 from Fujimoto, Tsukuba, Ibaraki (BLKU); 1 ♀ and 1 ♂ , collected by K. Kamijo on 7 April 1994 from Higashiyamato, Tokyo , Japan (HUM); 1 ♀ , collected by K. Kubo on 5 May 2000 from Yokohama, Kanagawa , Japan (HUM). Distribution. Japan (Honshu); Palearctic. This is a new distributional record of T. cerri from Japan . Host information. Torymus cerri is known as a parasitoid of Andricus singularis Mayr ( Hymenoptera : Cynipidae ) and Synophrus politus Hartig ( Hymenoptera : Cynipidae ) in Europe ( Graham & Gijswijt 1998 ). In Japan , this species parasitizes Andricus sp. ( Hymenoptera : Cynipidae ) that induces galls on Quercus serrata Murray (Fagaceae) (gall photo: fig. 26e, C–145 of Yukawa & Masuda 1996 ).