Schenkia sylvatica Townes, Momoi & Townes, 1965

Schenkia sylvatica Townes, Momoi & Townes, 1965 View in CoL

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

( Figs. 60A–G, 79Z)

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

Schenkia sylvatica Townes et al., 1965: 162 View in CoL . 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.