Eusterinx (Ischyracis) bispinosa ( Strobl, 1901 )

Watanabe, Kyohei, 2023, Taxonomic and Zoogeographic Notes on Japanese Orthocentrinae (Hymenoptera, Ichneumonidae), with Descriptions of Four New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 52, pp. 7-44 : 19

Eusterinx (Ischyracis) bispinosa ( Strobl, 1901)

[New SJN: Togesuji-hae-himebachi]

( Figs. 8A–E, 22M)

Hemiteles bispinosus Strobl, 1901: 234 .

Catomicrus alpigenus Strobl, 1904: 116 .

Cymodusoides gracilis Viereck, 1925: 74 .

Diagnosis. Inner eye orbit convergent ventrally ( Figs. 8B, D). Antenna with 18–21 flagellomeres. Propodeum with a pair of spine-like apophysis ( Figs. 8A, E, 22M). Fore wing without an areolet ( Fig. 8A). T I, T II and base of T III finely and longitudinally striated ( Fig. 8C). T II and T III each not divided into two parts by a transverse groove ( Fig. 8C). Ovipositor almost straight ( Fig. 8A), its apex sharply narrowed, ca. 0.2 times as long as fore wing. Mesosoma and hind leg black to blackish brown except for female trochanters and male hind leg sometimes tinged with yellowish brown ( Figs. 8A, C, E).

Material examined. JAPAN: EUM, F, Hokkaido. Sapporo City, Hitsujigaoka , 16–23. VII. 2003, K. Konishi leg. (MsT) ; NARO: 4 F & 3 M, Hokkaido, Sapporo City, Jozankei , 20–31. VII. 1989, K. Maeto & M. Sharkey leg. (MsT) ; EUM: 3 M, Hokkaido, Yuni , Kuobetsu-gawa R., 2–12. VII. 2007, N. Kuhara leg. (MsT) .

Distribution. Japan (Kunashiri Is. and Hokkaido); widely distributed in Holarctic region ( Yu et al., 2016).

Bionomics. Unknown in Japan. A host, Orfelia fultoni (Fisher) ( Mycetophilidae ), was recorded ( Dasch, 1992).

Remarks. This is the first record of this species from Hokkaido.