Deuteroxorides orientalis ( Uchida, 1928 )

Watanabe, Kyohei, 2017, Revision of the Genus Viereck, 1914 (Hymenoptera, Ichneumonidae, Poemeniinae), from Japan, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 46, pp. 101-106 : 104

Deuteroxorides orientalis ( Uchida, 1928)

[Japanese name; Hime-kuchiki-himebachi]

( Figs. 8–11 )

Xorides orientalis Uchida, 1928: 24 .

Deuteroxorides albitarsus f. orientalis : Uchida, 1936: 50.

Deuteroxorides atratus Kasparyan, 1976: 85 . Syn. nov.

Materials examined. JAPAN: 1 F (lectotype of Xorides orientalis ), Hokkaido, Sapporo City, Mt. Maruyama, "Oct 18 '22”, Tamanuki leg. ( SEHU); 1 F ( D. orientalis , det. K. Kusigemati), Hokkaido, Mt. Soranuma, 29. VIII. 1965, K. Kusigemati leg. ( SEHU); 1 F (holotype of D. atratus ), Kunashiri Is., Alekhine, 27. VII. 1973, D. Kasparyan leg. ( ZISP); 1 F ( D. atratus , det. D. Kasparyan), same locality, 31. VII. 1981, S. Belokobylskij leg. ( ZISP); 1 F, Hokkaido, Kumaishi, Kenichi-gawa, Iwafuchi-zawa, 5-10. VI. 1995, Y. Ito & T. Ito leg. (MsT) ( NIAES); 1 F, same locality and collector, 21-29. IX. 1995 (MsT) ( NIAES); 1 F, Hokkaido, Sapporo City, Mt. Soranumadake, 14. VI – 4. VII. 2007, A. Ueda leg. (MsT) ( KPMNH: KPM-NK 5006272); 1 F, Fukushima Pref., Showa, Mt. Hakase, 29. VI – 26. VII. 1998, T. Muroi leg. (MsT) ( MU).

Description. Female (n=8). Body length 8.8–11.5 mm.

Head 0.7 times as long as wide in dorsal view. Clypeus 0.6 times as long as wide. Face 0.8–0.9 times as long as wide, punctate. Frons sparsely punctate. Malar space 0.1 times as long as basal width of mandible. POL 0.6–0.7 timEs as loNg as OOL. ANtENNa with 29–32 flagEllomErEs.

Mesosoma. Pronotum largely smooth except for posterior margin. Scutellum flat, densely punctate. MEsoscutum dENsEly puNctatE, with fiNE traNsvErsE striaE medially. Mesopleuron without distinct longitudinal striae before smooth speculum. Propodeum covered with fine transverse striae anteriorly, with rather coarse striae posteriorly, without carinae except for pleural carina and part of posterior transverse carina. Pleural carina distinctly or slightly concave at area near spiracle. Fore wing 7.2–9.6 mm. Vein cu-a of fore wing slightly reclivous to slightly inclivous ( Fig. 8 ), its anterior end opposite to ( Fig. 8 ) or slightly based from posterior end of vein Rs+M. Vein Rs+2r of fore wing more or less sinuate. Vein 1-cu of hind wing longer than vein cu-a of hind wing ( Fig. 8 ). Inner aspect of fore tibia with 4–6 distinct large setae. Hind femur 6.3–6.5 times as long as maximum depth in lateral view.

Metasoma. T 1 1.7–2.5 times as long as maximum width, densely punctate, slightly transversely striated medially. T 2 and anterior 0.1–0.4 of T 3 shallowly punctate. Posterior part of T 3, T 4– T 7, aNd somEtimEs apical part of T 2 fiNEly sculptured. Ovipositor sheath 0.7–1.0 times as long as fore wing and 1.4–2.2 times as long as hind tibia.

Coloration ( Figs. 8–11 ). Head black to blackish-brown, except for: inner orbit (sometimes indistinct in face), outer surface of base of antenna, dorsal surface of F9 to base of F14 (sometimes reduced basally and apically), and palpi white; clypeus reddish-brown. Mesosoma black to blackish-brown, except for: tegula yellow to whitish-yellow; anterior margin of pronotum more or less tinged with reddish-brown. Wings hyaline, with pale blackish-brown veins. Fore and mid legs red to yellowish-brown, sometimes narrowly tinged with blackish-brown. Hind leg black to blackish-brown except for: trochanters, base and apex of femur, base of tibia, tarsus partly tinged with reddish-brown; coxa sometimes with a reddish-brown area. Metasoma black to blackish-brown, except for: posterior margin of T 1- T 4 narrowly tinged with reddish-brown to yellowish-brown; membranous part of sternites white; ovipositor yellowish-brown to reddish-brown.

Male. No specimens available.

Distribution. Japan (Kunashiri Is., Hokkaido and Honshu), Russian Far East, Korea and China.

Remarks. This is thE first rEcord of this spEciEs from Honshu. Kasparyan (1976) and Kasparyan & Khalaim (2007) notes that D. orientalis and D. atratus are separable by the colouration of hind coxa ( D. atratus : entirely black; D. orientalis : black with reddish-brown area) and tarsus ( D. atratus : without white band; D. orientalis : with a white band), the length of ovipositor ( D. atratus : longer than 0.75 times as long as fore wing; D. orientalis : shorter than 0.75 times as long as fore wing), and the inclination of cu-a of fore wing ( D. atratus : reclivous; D. orientalis : subvertical to slightly inclivous) based on the types of both species, while I recognize rathEr largE iNtraspEcific variatioN of thE charactErs iN thE additional materials with overlaps ( Table 1). In addition, I checked the holotype and the additional specimens of D. orientalis and then found its tarsus without white band. Thus, the description of hind tarsus of D. orientalis by Kasparyan & Khalaim (2007) may be not correct.

Figures

Figs. 8–11. Deuteroxorides orientalis (Uchida, 1928), female (KPM-NK 5006272). — 8, lateral habitus; 9, head, frontal view; 10, anterior aspect of right hind leg, lateral view; 11, hind coxae, posterior view.