Cubocephalus uryuensis, Watanabe, 2025

Cubocephalus uryuensis sp. nov.

[New SJN: Uryu-onaga-togari-himebachi]

( Figs. 22A–I, 76Q, 77B, 78R)

Type series. Holotype: JAPAN, KPM-NK 75809 , F, Hokkaido, Horokanai Town, Uryu, Research Forest of Hokkaido University , 17. VII. 2012, M. Ito leg. Paratype: JAPAN, KPM-NK 75810 , F, same locality of holotype, 11–17. VII. 2012, K. Watanabe et al. leg. (MsT) .

Description. Female (n = 2). Body matt; covered with setae; body length 9.0–9.3 (HT: 9.3) mm.

Head 0.63–0.65 (HT: 0.65) × as long as wide in dorsal view. Clypeus 2.0 × as wide as long; slightly convex in lateral view; densely punctate dorsally; sparsely punctate with some transverse foveae ventrally; smooth along lower margin; lower margin subtruncate in frontal view, obtuse in lateral view. Face 0.45–0.48 (HT: 0.45) × as long as minimum width; slightly convex and densely punctate medially. Frons slightly concave above antennal sockets; densely punctate except for smooth areas above antennal sockets. POL 0.9 × as OD. OOL 1.2–1.25 (HT: 1.2) × as OD. Gena and occiput densely and finely punctate. Dorsal profile of gena rounded in dorsal view; width gradually narrowing posteriorly ( Fig. 22D). Occipital carina complete. Malar space 0.9–1.0 (HT: 0.9) × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 25–26 (HT: 25) flagellomeres; not flattened and tapped. FL I 5.0–5.15 (HT: 5.0) × as long as maximum depth in lateral view, 1.0–1.05 (HT: 1.0) × as long as FL II.

Mesosoma. Pronotum granulate and partly finely rugulose ( Fig. 22E). Epomia short; dorsal end situated slightly above collar. Mesoscutum densely punctate; punctures on median part denser than outer parts. Notaulus sharp ( Fig. 22E); posterior end not reaching centre of mesoscutum. Scutellum densely punctate ( Fig. 22G); weakly convex in lateral view. Mesopleuron coriaceous; with conspicuous smooth area around speculum ( Fig. 22F). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.6 of mesopleuron. Posterior transverse carina of mesosternum without deep notch and teeth ( Fig. 77B). Metapleuron coriaceous ( Fig. 22F); with complete juxtacoxal carina. Propodeum coriaceous; anterior transverse carina absent; posterior transverse carina complete, inverted U-shaped ( Fig. 22G); lateromedian longitudinal carina absent; lateral longitudinal carina weakly present and narrowly indistinct posteriorly; pleural carina weakly present and narrowly indistinct posteriorly; area superomedia indistinct; apophysis absent; spiracle oval. Fore wing length 8.0 mm. Areolet as long as maximum width; longer than half length of vein 2m-cu; width steeply narrowing anteriorly; received vein 2m-cu at near middle; anterior width shorter than half length of vein 2m-cu. Fore wing vein 1cu-a interstitial to vein M&RS. Nervellus subvertical; intercepted near posterior end of vein. Hind femur reticulate coriaceous; 5.3–5.6 (HT: 5.6) × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma. T I 2.1–2.3 (HT: 2.3) × as long as maximum width; latero-median carina absent; dorso-lateral carina present basally. Spiracle of T I behind the mid-length of T I. T II 0.75 × 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 2.43–2.55 (HT: 2.43) × as long as hind tibia, 5.55–5.65 (HT: 5.55) × as long as T I. Ovipositor weakly upcurved; apex sharp and with some minute teeth dorsally; apex of lower valve with teeth ( Fig. 78R).

Colouration ( Figs. 22A–I). Body (excluding wings) black to blackish-brown. Setae silver. Subapical part of mandible tinged with reddish-brown. FL VI to FL X (or XI) with white markings. Apex and base of femora narrowly tinged with brown to reddish-brown. Fore and mid tibiae and tarsi partly tinged with brown. Tibial spurs brown. Membranous part of metasoma sternites dark yellowish-brown. Median membranous part of T VII white. Thyridium and ovipositor reddish-brown. Wings hyaline. Veins and pterostigma blackish-brown to brown except for yellowish 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 Cu. atrator in the black body with long ovipositor but can be distinguished by the posterior transverse carina of mesosternum without deep notch and teeth (with deep notch and teeth in Cu. atrator ).