Cubocephalus atrator ( Walker, 1874 )

Cubocephalus atrator ( Walker, 1874) View in CoL

[SJN: Onaga-togari-himebachi]

( Figs. 17A–H, 18A–E, 76N, 77A, 78N)

Echthrus atrator Walker, 1874: 306 .

Materials examined. JAPAN: [Honshu] KPM-NK 102947 , F, Kanagawa Pref., Hakone Town, Komagatake , 20. VI. 2000, H. Nagase leg. ; KPM-NK 102944 , F, ditto, 4. VII. 2001 ; KPM-NK 102941 , F, ditto, 23. VIII. 2003 ; KPM-NK 5004439 , F, Kanagawa Pref., Kiyokawa Vil., Mt. Tanzawa-san , 20. VI. 2013, T. Taniwaki leg. ( FIT) ; KPM-NK 103204 , F, Yamanashi Pref., Narusawa Vil., Kouyoudai , 13. IX. 2021, K. Watanabe leg. ; KPM-NK 91385 , F, Shizuoka Pref., Shizuoka City, Umegashima, Abe-toge , 15. VI. 2008, K. Watanabe leg. ; KPM-NK 102943 , F, Nagano Pref., Outaki Vil., Hakkaisan , 31. VII. 2013, M. Ito leg. ; KPM-NK 91379 , 102951 , 2 F, Toyama Pref., Nanto City, Togamura-kamimomose , 21–28. VII. 2009, M. Watanabe leg. (MsT) ; KPM-NK 102952 , F, ditto, 4–11. VIII. 2009 ; KPM-NK 102954 , F, ditto, 8–15. IX. 2009 ; KPM-NK 102950 , F, Toyama Pref., Toyama City, Kamegai , 14–21. VII. 2009, M. Watanabe leg. (MsT) ; OMNH, F, Toyama Pref., Toyama City, Arimine, Inonedani , 21–28. VII. 2009, M. Watanabe leg. (MsT) ; KPM-NK 102949 , F, Toyama Pref., Toyama City, Arimine, Jyurodani , 7–14. VII. 2009, M. Watanabe leg. (MsT) ; KPM-NK 102948 , M, ditto, 21–28. VII. 2009 ; KPM-NK 102953 , F, ditto, 1–8. IX. 2009 ; KPM-NK 81286 , F, Fukui Pref., Yashagaike , 27–29. VII. 1974, H. Kurokawa leg. ; KPM-NK 102945 , F, Fukui Pref., Fukui City, Mt. Kunimidake , 13. VI. 1981, T. Murota leg. ; KPM-NK 102946 , F, Fukui Pref., Obama City, Kaminegori , 20. VIII. 1981, H. Kurokawa leg. ; KPM-NK 102942 , F, Hyogo Pref., Kami Town, Niiya , 12. VII. 2015, S. Fujie leg. [ Shikoku ] SEHU, 1F (det. Uchida), Ehime Pref., Sasayama , 28. VII. 1916, Matsumura leg.

Description. Female (n = 20). Body polished; covered with setae; body length 7.0– 12.2 mm.

Head 0.6 × as long as wide in dorsal view. Clypeus 2.3–2.4 × as wide as long; slightly convex in lateral view; punctate dorsally, smooth ventrally; lower margin rounded in frontal view, obtuse in lateral view. Face 0.48 × as long as minimum width; slightly convex medially; matt with punctures. Frons slightly concave above antennal sockets; coriaceous; punctate dorsally. POL 1.2–1.6 × as OD. OOL 1.2–1.4 × as OD. Gena and occiput finely punctate. Dorsal profile of gena rounded in dorsal view; width not narrowing anteriorly and somewhat abruptly narrowing posteriorly ( Fig. 17D). Occipital carina complete. Malar space 1.2–1.25 × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 23–27 flagellomeres; not flattened and tapped. FL I 3.7–4.2 × as long as maximum depth in lateral view, 0.9–0.95 × as long as FL II.

Mesosoma. Pronotum rugose ventrally; densely punctate dorsally ( Fig. 17E). Epomia short; dorsal end situated on or above collar. Mesoscutum punctate; punctures on median part denser than outer parts. Notaulus sharp ( Fig. 17D); posterior end not reaching centre of mesoscutum. Scutellum densely punctate; weakly convex in lateral view. Mesopleuron densely punctate; punctures partly united into groove-like foveola; with conspicuous smooth area around speculum ( Fig. 17E). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.6 of mesopleuron. Posterior transverse carina of mesosternum with deep notch medially; divided into two teeth near notch ( Fig. 77A). Metapleuron reticulate coriaceous anteriorly, rugulose posteriorly; with complete juxtacoxal carina. Propodeum largely irregularly rugose; anterior transverse carina weakly present, sometimes trace-like and/or partly absent; posterior transverse carina complete, inverted U-shaped ( Fig. 17G); lateromedian longitudinal carina present and sometimes partly indistinct; lateral longitudinal carina complete; pleural carina complete; area superomedia partly distinct, about as long as maximum width; apophysis absent; spiracle oval. Fore wing length 6.3–9.0 mm. Areolet slightly longer than 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 ( Fig. 17F). Fore wing vein 1cu-a interstitial to vein M&RS ( Fig. 17F). Nervellus subvertical; intercepted near posterior end of vein. Hind femur reticulate coriaceous; 4.35–4.6 × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma matt and coriaceous. T I 1.75–2.0 × as long as maximum width; latero-median carina absent; dorso-lateral carina complete. Spiracle of T I behind the mid-length of T I. T II 0.8–0.9 × 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 1.83–2.68 × as long as hind tibia, 3.65–5.1 × as long as T I. Ovipositor weakly upcurved; apex sharp and with some minute teeth dorsally; apex of lower valve with teeth ( Fig. 78N).

Colouration ( Figs. 17A–H). Body (excluding wings) black to blackish-brown. Setae silver. Subapical part of mandible tinged with reddish-brown. FL VI (or VII) to FL IX (or X) with white markings. Posterior margins of metasomal tergites sometimes narrowly tinged with reddish-brown. Postero-median membranous parts of T V to T VII white. Thyridium and ovipositor reddish-brown. Wings hyaline. Veins and pterostigma blackish-brown to brown except for yellowish wing base.

Male (n = 1). Similar to female ( Figs. 18A–E). Malar space 0.9 × as long as basal width of mandible. Antenna with tyloids on FL IX to FL XIV ( Fig. 18D). FL I 2.75 × as long as maximum depth in lateral view, 1.1 × as long as FL II. Hind femur 5.0 × as long as maximum depth in lateral view. Anterior transverse carina of propodeum complete. T I 2.6 × as long as maximum width. T II 1.4 × as long as maximum width. Mandible except for teeth, palpi, dorsal parts of malar space and clypeus, face except for median black area, frontal orbits, ventral surfaces of scape and pedicel, postero-dorsal corner of pronotum, tegula, ventral surfaces of fore and mid trochanters, and all tibial spurs yellow to ivory. Fore and mid legs paler than female.

Distribution. Japan (Honshu and Shikoku).

Bionomics. Unknown.

Remarks. This is the first record of the male of this species.