Schenkia sylvatica Townes, Momoi & Townes, 1965

[SJN: Maruyama-kogata-futo-togari-himebachi]

(Figs. 60A–G, 79Z)

Microcryptus maruyamensis Uchida, 1936a: 47. Name preoccupied.

Schenkia sylvatica Townes et al., 1965: 162. New name.

Materials examined. JAPAN: [Hokkaido] SEHU, 1F (holotype of Mi. maruyamensis), Sapporo, Mt. Maruyama, 20. VI. 1924, T. Uchida leg.; KPM-NK 102781, F, Akan Town, Akan-lake trail, 10. IX. 2014, S. Shimizu & Y. Saito leg.; KPM-NK 102782, Naie Town, Chasinai, Naiegawarindo, 21. VI. 2017, K. Watanabe leg. [Honshu] KPM-NK 102780, Nagano Pref., Outaki Vil., Mt. Ontake-san, Hakkaisan, 9. VIII. 2007, K. Watanabe leg.; OMNH, 1F, Toyama Pref., Nanto City, Togamura-kamimomose, 21– 28. VII. 2009, M. Watanabe leg. (MsT); KPM-NK 102783, F, ditto, 18–25. VIII. 2009; OMNH, 1F, ditto, 8–15. IX. 2009; KPM-NK 81400, F, Toyama Pref., Toyama City, Arimine, Jurodani, 1–8. IX. 2009, M. Watanabe leg. (MsT); KPM-NK 81398, F, Toyama Pref., Toyama City, Arimine, Kamegai, 14–21. VII. 2009, M. Watanabe leg. (MsT); KPM-NK 81399, F, Toyama Pref., Toyama City, Arimine, Inonedani, 11–16. VIII. 2009, M. Watanabe leg. (MsT). [Shikoku] KPM-NK 102779, F, Ehime Pref., Saijyo City, Nishinokawatei, Mt. Ishizuchi-yama, Tsuchigoya, 28. VII. 2018, K. Watanabe leg.

Description. Female (n = 11). Body punctate and polished; covered with setae; body length 6.2–9.5 mm.

Head 0.55 × as long as wide in dorsal view. Clypeus 2.2–2.3 × as wide as long; slightly convex in lateral view; punctate and coriaceous dorsally, smooth ventrally; lower margin subtruncate in frontal view, obtuse in lateral view. Face 0.3–0.38 × as long as minimum width; weakly convex medially; matt laterally, densely punctate and coriaceous medially. Frons weakly concave above antennal sockets; matt and punctate dorsally; coriaceous ventrally. POL 1.15–1.3 × as OD. OOL 1.4–1.7 × as OD. Gena and occiput finely and sparsely punctate. Dorsal profile of gena weakly rounded in dorsal view; width gradually narrowing posteriorly (Fig. 60D). Occipital carina complete. Malar space 0.8–0.9 × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 27–29 flagellomeres; apical part flattened below and tapped to slender apex. FL I 2.0–2.25 × as long as maximum depth in lateral view, 0.9–0.95 × as long as FL II.

Mesosoma. Pronotum rugulose except for small area of antero-dorsal part punctate (Fig. 60E). Epomia absent. Mesoscutum densely punctate; without notaulus. Scutellum sparsely punctate (Fig. 60G); slightly convex in lateral view. Mesopleuron with conspicuous smooth area around speculum (Fig. 60E). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.4 of mesopleuron. Metapleuron with juxtacoxal carina; carina sometimes indistinct by rugae. Propodeum rugose or rugulose except for smooth anterior part; anterior transverse carina absent; posterior transverse carina complete, inverted U-shaped (Fig. 60G); lateromedian longitudinal carina present; lateral longitudinal carina present, sometimes weak posteriorly; pleural carina complete; area superomedia partly indistinct; area externa punctate; apophysis absent; spiracle oval. Fore wing length 5.7–7.1 mm. Areolet slightly longer than wide; width gradually narrowing anteriorly; received vein 2m-cu at slightly beyond to or near middle (Fig. 60F). Fore wing vein 1cu-a interstitial to vein M&RS (Fig. 60F). Nervellus subvertical; intercepted near posterior end of vein. Hind femur reticulate coriaceous; 4.1–4.5 × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma finely and sparsely punctate, ISP smooth. T I 1.9–2.1 × as long as maximum width; latero-median carina absent posteriorly, weak anteriorly; dorso-lateral carina complete. T II 0.6–0.8 × as long as maximum width. Thyridium present; close to anterior margin of T II; slightly depressed; ca. 2.0 × as wide as length. Ovipositor sheath 0.95–1.05 × as long as hind tibia, 1.45–1.65 × as long as T I. Ovipositor straight; apex obtuse with small truncation; apex of lower valve with teeth (Fig. 79Z).

Colouration (Figs. 60A–G). Body (excluding wings) black to blackish-brown. Setae silver; more or less brownish on head and mesoscutum. Subapical part of mandible, ventral surface of apical part of flagellum, and posterior margin of T II tinged with reddish-brown to yellowish-brown. FL V (or VI, VII) to FL X (or XI, XII) with white markings. Fore femur, tibia, and tarsus partly tinged with brown to dark yellowish-brown. Thyridium and ovipositor dark reddish-brown. Apex of metasoma ivory. Wings hyaline. Veins and pterostigma blackish-brown to brown except for yellowish-brown wing base.

Male. Unknown.

Distribution. Japan (Kunashiri Is., Hokkaido, Honshu, and Shikoku).

Bionomics. Unknown.

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