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.

Figures

Fig. 7. Eusterinx (Holomeristus) tenuicincta (Förster, 1871) (A–C: EUM, female) ― A: lateral habitus; B: head, frontal view; C: head, mesosoma, and metasoma, dorsolateral view.

Fig. 22.A, F: Apoclima brevicauda sp. nov. (A: NARO, holotype, female; F: NARO, paratype, male); B, F: Hemiphanes japonicum sp. nov. (B, E: NARO, paratype, female); C, D: H. gravator Förster, 1871 (KPM-NK 81100, female); G: H. erratum Humala, 2007 (NARO, male); H, L: Eusterinx (Holomeristus) tenuicincta (Förster, 1871) (EUM, female); I: Aperileptus albipalpus (Gravenhorst, 1829) (KPM-NK 81184, female); J: Ape. vanus Förster, 1871 (KPM-NK 81109, female); K: E. (Divinatrix) kurilensis Humala, 2004 (NARO, female); M: E. (Ischyracis) bispinosa (Strobl, 1901) (EUM, female) ― A–C: head, dorsal view; D: head, posterodorsal view; E: head, frontal view; F: flagellum, lateral view; G: flagellum, ventral view; H: mesoscutum and scutellum, dorsal view; I, J: mesopleuron, lateral view; K: T I–T IV, dorsal view; L: area superomedia of propodeum; M: propodeum, lateral view.