Schenkia uryuensis, Watanabe, 2025

Schenkia uryuensis sp. nov.

[New SJN: Kitaguni-futo-togari-himebachi]

( Figs. 62A–G, 79 AB)

Type series. Holotype: JAPAN, KPM-NK 84967 , F, Hokkaido, Horokanai Town, Uryu, Research Forest of Hokkaido University , 11–17. VII. 2012, K. Watanabe et al. leg. (MsT).

Description. Female (n =1). Body polished; covered with setae; body length 6.7 mm.

Head 0.6 × as long as wide in dorsal view. Clypeus 2.3 × as wide as long; slightly convex in lateral view; sparsely punctate dorsally; smooth ventrally; lower margin subtruncate in frontal view, obtuse in lateral view. Face 0.38 × as long as minimum width; weakly convex medially; matt; finely punctate. Frons weakly concave above antennal sockets; matt and punctate dorsally, coriaceous ventrally. POL 1.2 × as OD. OOL 1.4 × as OD. Gena and occiput finely punctate. Dorsal profile of gena rounded in dorsal view; width gradually narrowing posteriorly ( Fig. 62D). Occipital carina complete. Malar space 1.1 × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 24 flagellomeres; apical part flattened below and tapped to slender apex. FL I 2.0 × as long as maximum depth in lateral view, 0.85 × as long as FL II.

Mesosoma. Pronotum rugulose ventrally and posteriorly, punctate antero-dorsally ( Fig. 62E). Epomia absent. Mesoscutum punctate; with short and weak notaulus. Scutellum sparsely punctate ( Fig. 62G); weakly convex in lateral view. Mesopleuron punctate; punctures partly united into groove-like foveola; without conspicuous smooth area around speculum ( Fig. 62E). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.4 of mesopleuron. Metapleuron finely punctate; with complete juxtacoxal carina; area around and below juxtacoxal carina rugose. Propodeum rugose or rugulose except for area externa finely and sparsely punctate with smooth ISP ( Fig. 62D); anterior transverse carina absent ( Fig. 62D); posterior transverse carina complete, inverted V-shaped ( Fig. 62D); lateromedian longitudinal carina weak; lateral longitudinal carina complete; pleural carina complete; area superomedia indistinct; apophysis absent; spiracle oval. Fore wing length 5.9 mm. Areolet as long as maximum width; width gradually narrowing anteriorly; received vein 2m-cu at near middle ( Fig. 62F). Fore wing vein 1cu-a postfurcal to vein M&RS ( Fig. 62F). Nervellus subvertical; intercepted posterior to middle. Hind femur reticulate coriaceous; 4.3 × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma finely and sparsely punctate, ISP smooth. T I 2.15 × as long as maximum width; latero-median carina absent; dorso-lateral carina complete. T II 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 0.85 × as long as hind tibia, 1.35 × as long as T I. Ovipositor straight; apex obtuse; apex of lower valve with teeth ( Fig. 79 AB).

Colouration ( Figs. 62A–G). Body (excluding wings) black to blackish-brown. Setae silver. Mandible tinged with dark brown except for teeth. Labrum, palpi, scape, pedicel, FL I to FL III, and ovipositor yellowish-brown. FL VI to FL X with white markings. Fore and mid coxae, trochanters, trochantelli, tibial spurs, and second to fourth hind tarsomeres ivory to yellowish-brown. Hind coxa, femora, tibiae, and tarsi except second to fourth hind tarsomeres reddish-yellow. Apices of hind femur and tibia and hind first and fifth tarsomeres tinged with brown. Membranous part of metasomal sternites yellow. Apex of T I narrowly tinged with reddish-brown. T II and T III largely tinged with reddish-brown to red. Posterior margins of T II to T VI narrowly tinged with red. Wings brownish-hyaline. Veins and pterostigma brown to yellowish-brown except for yellow wing base.

Male. Unknown.

Distribution. Japan (Hokkaido).

Bionomics. Unknown.

Etymology. The species name is from the type locality, Uryu, a place in Hokkaido with the research forest of Hokkaido University.

Remarks. This species resembles S. aries (Thomson, 1883) and S. spinolae ( Gravenhorst, 1829) in the body colouration and the obtusely pointed ovipositor but can be distinguished by the black T I and T IV (both red in S. aries and S. spinolae ), the fore wing vein 1cu-a postfurcal to vein M&RS (interstitial in S. aries and S. spinolae ), the apex of ovipositor not bulged dorsally (bulged dorsally in S. aries ), and the entirely black face (with reddish markings in S. aries and S. spinolae ).