Hemiphanes japonicum, Watanabe, 2023

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 : 22-25

Hemiphanes japonicum sp. nov.

[New SJN: Nippon-hirata-hae-himebachi]

( Figs. 11A–G, 22B, E)

Type series. Holotype: KPM-NK 81113 , F, JAPAN, Toyama Pref., Toyama City, Kamegai , 15–26. IX. 2009, M. Watanabe et al. leg. (MsT) . Paratypes: JAPAN :

NARO, 2 M, Hokkaido, Sapporo City, Misumai, Kannon-zawa , 27. VII. – 11. VIII. 1992, N. Kuhara leg. (MsT) ; EUM, M, Hokkaido, Yuni , Kuobetsu-gawa R., 2–12. VII. 2007, N. Kuhara leg. (MsT) ; NARO, 2 M, Hokkaido, Sapporo City, Jozankei , 21–29. VIII. 1989, K. Maeto & M. Sharkey leg. (MsT) ; NARO, 4 M, ditto, 29. VIII. – 12. IX. 1989 ; EUM, 4 M, Hokkaido. Sapporo City, Hitsujigaoka , 11–18. VI. 2003, K. Konishi leg. (MsT) ; EUM, 5 M, ditto, 18–25. VI. 2003 ; EUM, F, ditto, 2–9. VII. 2003 ; EUM, F, Hokkaido, Bifue, Kusabue-rindo , 17. VIII. – 1. IX. 2012, N. Kuhara leg. (MsT) ; KPM-NK 81116 , 81117 , 2 M, Hokkaido, Sapporo City, Mt. Soranuma-dake , 14. VI. – 4. VII. 2007, A. Ueda leg. (MsT) ; KPM-NK 81118 , Hokkaido, Horokanai Town, Uryu , 11–17. VII. 2012 , K. Watanabe et al. leg. (MsT); KPM-NK 81115 , M, Gunma Pref., Katashina Vil., Marunuma, Yuzawa , 2. VII. 2008, K. Watanabe leg. ; KPM-NK 81114 , F, same data of holotype .

Diagnosis. Clypeus without a deep notch, only slightly concave medially. Malar space 1.1–1.4 times as long as basal width of mandible. Occiput without a concavity. Occipital carina complete dorsally. Upper tooth of mandible longer than lower tooth. FL I longer than 5.0 times as long as apical width. Tyloid of male absent. Propodeum with anterior section of lateromedian longitudinal carinae. Hind femur 5.2–5.7 times as long as maximum depth in lateral view. Lateral lobe of mesoscutum polished but nearly entirely covered with short hairs. T I 1.7–1.9 (female) or 1.7–2.2 (male) times as long as maximum width.

Description. Female (n = 4). Body length 4.1–6.1 ( HT: 4.8) mm, polished and covered with silver setae.

Head 0.7 times as long as wide, punctate. Clypeus 2.1– 2.2 ( HT: 2.2) times as broad as high, weakly convex, its anterior margin slightly concave medially. Supraclypeal shallow and indistinct. Face 1.6–1.7 ( HT: 1.6) times as broad as high, flat in lateral view. Malar space 1.3–1.4 ( HT: 1.4) times as long as basal mandibular width. POL 1.1–1.4 ( HT: 1.1) times as long as OD. OOL 1.4–1.5 ( HT: 1.5) times as long as OD. Inner eye orbit almost parallel. Occipital carina complete. Vertex without a median concavity. Labrum exposed. Mandible not twisted, convex basally, upper tooth longer than lower tooth. Flagellum with 22–24 ( HT: 23) segments, all segments longer than its maximum depth in lateral view. FL I 5.7– 7.3 ( HT: 5.7) times as long as maximum depth in lateral view and 1.3 times as long as FL II.

Mesosoma. Pronotum largely smooth, with sharp epomia. Mesoscutum finely punctate and finely rugulose, entirely covered with short hairs ( Fig. 11C), with weak notaulus, its posterior end situated anterior to the middle of mesoscutum. Scutellum punctate. Mesopleuron smooth except for epicnemium and mesepisternum with punctures. Propodeum rugulose, with posterior transverse carina, lateromedian longitudinal carina (anterior part absent) and pleural carina. Fore wing length 3.3–3.8 ( HT: 3.7) mm. Vein 1cu-a of fore wing interstitial or slightly postfurcal. Vein 2r&RS of fore wing extends from pterostigma for its middle. Hind wing with nervellus intercepted behind the middle. Hind femur 5.2–5.7 ( HT: 5.6) times as long as maximum depth in lateral view. Hind TS I 2.1–2.2 ( HT: 2.1) times as long as TS II. Hind TS II 4.7–4.8 ( HT: 4.8) times as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma. T I 1.7–2.0 ( HT: 2.0) times as long as maximum width, rugulose with some longitudinal striae ( Fig. 11D). T II 0.85 times as long as maximum width, reticulate rugose except for smooth posterior margin. T II to T VII finely punctate. Ovipositor sheath ca. 0.07 times as long as hind tibia, its apex not exceeded beyond apex of metasoma.

Coloration ( Figs. 11A–D). Body (excluding wings and legs) black to blackish brown. Mandible, clypeus except for black dorsal part, basal segments of antenna, palpi, postero-dorsal corner of pronotum, tegula, postero median spot of T II, membranous sections of metasomal sternites and ovipositor yellowish brown to yellow. T III to T IV largely yellowish brown. Wings hyaline. Veins and pterostigma blackish brown to brown. Legs reddish yellow to yellowish brown. Fore and mid coxae and trochanters whitish yellow. Hind tarsus blackish brown. Hind tibia sometimes tinged with blackish brown.

Male (n = 21). Similar to female. Body length 4.5–5.65 mm. Face 1.5–1.6 × as broad as high. Malar space 1.1–1.2 × as long as basal mandibular width. Flagellum with 21–23 segments, without tyloid. FL I 4.6–5.3 times as long as maximum depth in lateral view and 1.25–1.3 times as long as FL II. POL 1.6 times as long as OD. T I 1.7–2.2 × as long as maximum width. T II 0.9–1.0 × as long as maximum width. T I sometimes with reddish brown or yellowish brown area. Reddish brown or yellowish brown area of T II usually larger than female ( Fig. 11G).

Distribution. Japan (Hokkaido and Honshu).

Etymology. The specific name is from Japan.

Remarks. This species resembles H. flavipes and H. performidatum but can be distinguished from them by the length of T I, hind femur, and malar space.