Eusterinx (Holomeristus) tenuicincta ( Förster, 1871 )

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 : 18

Eusterinx (Holomeristus) tenuicincta ( Förster, 1871)

[SJN: Jyuzuhige-hae-himebachi]

( Figs. 7A–C, 22H, L)

Holomeristus tenuicincta Förster, 1871: 80 .

Mesoleptus fungicola Ashmead, 1894: 50 .

Diagnosis. Eye covered with a few indistinct setae. Inner eye orbit not strongly convergent ventrally ( Fig. 7B). Malar space 0.2–0.25 times as long as basal width of mandible. Antenna with 16 flagellomeres. Notaulus sharp and distinct, reached to the centre of mesoscutum ( Fig. 22H). Mesopleuron with longitudinal striae ventrally. Propodeum without a pair of spine-like apophysis ( Fig. 7A). Anterior transverse carina of propodeum complete. Area superomedia of propodeum elongated and slightly narrowed posteriorly ( Fig. 22L). Fore wing with an areolet ( Fig. 7A). T II longitudinally striated. T II and T III each not divided into two parts by a transverse groove ( Fig. 7C). Ovipositor upcurved ( Fig. 7A), 0.2–0.3 times as long as hind wing. Clypeus and mandible tinged with yellow ( Fig. 7B). Hind coxa and femur reddish brown ( Fig. 7A). Pronotum and posterior parts of T II and T III sometimes tinged with reddish brown.

Material examined. JAPAN: EUM, 2 F, Hokkaido. Sapporo City, Hitsujigaoka , 11–18. VII. 2011, K. Konishi leg. (MsT) ; NARO, 2 F, Hokkaido, Sapporo City, Jozankei , 20–31. VII. 1989, K. Maeto & M. Sharkey leg. (MsT) ; NARO, 2 F, ditto, 21–29. VIII. 1989 ; NARO, 3 F, ditto, 29. VIII. – 12. IX. 1989 ; NARO, F, ditto, 12–21. IX. 1989 ; EUM, 1 M, Hokkaido, Yuni , Kuobetsu-gawa R., 2–12. VII. 2007, N. Kuhara leg. (MsT) ; EUM, 4 F, Hokkaido, Bifue, Kusabue-rindo , 17. VIII. – 1. IX. 2012, N. Kuhara leg. (MsT).

UNREADABLE LOCALITY DATA: ZISP, F (det. Rossem) , 20. VIII. 1980, Kasparyan leg.

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

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