Torymus fuscicornis ( Walker, 1833 )

Matsuo, Kazunori, 2020, A revision of Japanese Torymus Dalman (Hymenoptera: Torymidae), Zootaxa 4758 (3), pp. 401-441 : 418-419

Torymus fuscicornis ( Walker, 1833)

Callimome fuscicornis Walker, 1833: 138 .

Callimome posticus Walker, 1833: 137 ; Eady, 1959: 261 (as junior synonym of Lioterphus fuscicornis (Walker)) . Lioterphus mölleri Thomson, 1876: 99 ; Eady, 1959: 261 (as junior synonym of Lioterphus fuscicornis (Walker)) . Lioterphus fuscicornis (Walker) : Eady, 1959: 261.

Torymus fuscicornis (Walker) : Grissell, 1995: 281.

Specimens examined. 5 ♀, collected by Z. Bouček on 16 May 1976 from Burnham Beeches , Bucks, England ( BMNH) ; 2 ♂, emerged on 12 March 1957 from seeds of Betula platyphylla Sukaczev var. japonica collected by K. Kamijo from Sapporo , Hokkaido, Japan ( HUM) ; 1 ♀, collected by K. Kamijo on 13 June 1978 from Bibai , Hok- kaido, Japan ( HUM) ; 3 ♀ and 1 ♂, collected by K. Kamijo on 1 June 1980 from Bibai , Hokkaido, Japan ( HUM) .

Distribution. Japan (Hokkaido); Palearctic. This is a new distributional record of T. fuscicornis from Japan.

Host information. Torymus fuscicornis parasitizes unknown host in seeds of Betula platyphylla Sukaczev var. japonica (Miq.) H. Hara (Betulaceae) in Japan. According to Graham and Gijswijt (1998), this species is associated with Semudobia spp. ( Diptera : Cecidomyiidae ), gall inducers of Betula (Betulaceae) in Europe.