Woldstedtius yokohamensis (Uchida, 1930)

Morishita, Shunsuke & Watanabe, Kyohei, 2022, Revision of the genus Woldstedtius Carlson, 1979 (Hymenoptera, Ichneumonidae, Diplazontinae) from Japan, Deutsche Entomologische Zeitschrift 69 (1), pp. 45-64 : 45

Woldstedtius yokohamensis (Uchida, 1930)

Fig. 8A-D

Homocidus yokohamensis Uchida, 1930: 258

Materials examined.

Type series: JAPAN: [Honshu] 1 F (holotype), Yokohama, 26 Apr 1928, K. Sato leg. (SEHU) .

Description.

Female (n = 1: holotype). Body length 9.1 mm, polished, coriaceous, covered with silver setae.

Head 0.5 × as long as wide. Clypeus 2.0 × as broad as high, convex basally in lateral view. Face 2.0 × as broad as high, finely and densely punctate, convex medially in lateral view, separated from clypeus by shallow clypeal sulcus. Inner orbits almost parallel (Fig. 8B ). Length of malar space 1.1 × as long as basal mandibular width. POL 2.1 × as long as OD. OOL 1.25 × as long as OD. POL 2.0 × as long as OOL. Antenna with 26 flagellomeres. FL I 1.35 × as long as FL II. MP IV 1.33 × as long as MP V.

Mesosoma. Lateral aspect of pronotum strigose anteriorly. Mesoscutum finely and densely punctate (separated by ca. 1.0 × their diameter) (Fig. 8C ). Scutellum finely and densely punctate (separated by ca. 1.0 × their diameter). Mesopleuron finely rugulose and densely punctate except for the areas on and below speculum. Sternaulus very weakly impressed. Propodeum rounded in lateral view, rugulose (Fig. 8D ), without carinae except for pleural carina. Fore wing length 7.1 mm. Nervellus intercepted below middle. Hind femur 4.4 × as long as maximum depth in lateral view. Hind tibia 8.5 × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 1.0: 0.7: 0.4: 0.2: 0.26.

Metasoma. T I rectangular in dorsal view, 1.3 × as long as maximum width. Latero-median carina present basal ca. 0.5 of T I. T II 0.72 × as long as maximum width, striate anteriorly and strigose laterally.

Coloration (Fig. 8A-D ). Body (excluding wings and legs) black. Face with a pair of yellow spots along inner orbits. Palpi, subtegular ridge and upper mesepisternum yellow. Mandible yellow except for apex. Lateral aspect of pronotum with a yellow spot posteriorly. Mesoscutum with yellow shoulder marks. Scutellum with a yellow spot apically. Wings hyaline. Veins and pterostigma blackish-brown except for yellowish-brown wing base. Legs black. Fore and mid trochantelli, femora, tibiae and tarsi yellowish-brown to brown. Apex of hind trochantellus and base of hind femur tinged with reddish-brown. Base of hind tibia tinged with brown.

Male. Unknown.

Distribution.

Japan (Honshu). Outside Japan, this species has been recorded from South Korea ( Balueva and Lee 2016).

Bionomics.

Unknown.

Remarks.

This species may be rare in Japan. We could only examine the holotype. No additional specimen of this species from Japan was found.

Figures

Figure 8. Woldstedtius yokohamensis (Uchida, 1930) (A-D. female, holotype) - A. Habitus; B. Head, frontal view; C. Mesonotum, dorsal view; D. Propodeum, dorsal view.