Taxonomic Study of Japanese Ctenopelmatinae (Hymenoptera, Ichneumonidae), with Descriptions of 22 New Species Author Watanabe, Kyohei text Bulletin of the Kanagawa Prefectural Museum (Natural Science) 2024 2024-03-22 53 39 102 journal article 10.5281/zenodo.13237363 2189-6720 13237363 D4FC7074-ADC6-4310-B60E-12B7ECBD6E25 Campodorus rufidorsalis sp. nov. (SJN: Muneaka-ko-maru-himebachi) ( Figs. 20A–E , 38L , 40M ) Type series . Holotype : JAPAN , KPM-NK 84958 , F, Osaka Pref. , Takatsuki City , Akitagawa-ryokuchi , 30. IV. 2011 , S. Fujie leg. Paratypes : JAPAN , KPM-NK 84959– 84960 , 1 F & 1 M, Osaka Pref. , Takatsuki City , Hara to Hagitani , 28. IV. 2012 , S. Fujie leg. ; OMNH , F, ditto. Description. Female ( n = 3). Body length 6.25–6.5 (HT: 6.5) mm, covered with silver setae. Head 0.6 × as long as wide in dorsal view, matt. Clypeus 2.8 × as broad as high, sparsely punctate and polished, convex in lateral view, lower margin with a median concavity ( Fig. 40M ). Face 1.95–2.0 (HT: 2.0) × as broad as high, slightly convex medially in lateral view. Dorsal profile of gena as Fig. 38L . Occipital carina complete. Length of malar space 0.1 × as long as basal width of mandible. Base of mandible flat. POL 0.7–0.9 (HT: 0.7) × as long as OD. OOL 0.9–1.2 (HT: 0.9) × as long as OD . Antenna with 35–36 (HT: 36) flagellomeres. FL I 5.7 × as long as maximum depth, 1.55–1.6 × as long as FL II. Length of FL I plus FL II 1.0 × as long as eye height. Mesosoma polished and punctate. Epomia absent. Pronotum rugulose along collar. Mesoscutum with weak notaulus, interspace of punctures slightly coriaceous. Epicnemial carina present laterally and ventrally, its dorsal end situated near anterior margin of mesopleuron. Speculum with large smooth area ( Fig. 20A ). Propodeum with all carinae except for anterior transverse carina ( Fig. 20C ). Fore wing length 6.2–7.4 (HT: 6.2) mm. Areolet absent. Fore wing vein 1cu-a postfurcal to vein M&RS ( Fig. 20A ). Nervellus slightly inclivous, intercepted posterior the middle. Tarsal claws simple. Hind femur 5.0–5.2 (HT: 5.2) × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 4.0–4.1 (HT: 4.1): 2.0: 1.5–1.55 (HT: 1.5): 0.95–1.0 (HT: 1.0): 1.0–1.2 (HT: 1.2). Metasoma matt. T I 1.5 × as long as maximum width, with latero-median longitudinal carina, its posterior end situated near midlength of segment. T II 0.65–0.9 (HT: 0.9) × as long as maximum width. Setae of subgenital plate directed backwards. Ovipositor sheath with short (shorter than half depth of ovipositor sheath) setae apically. Ovipositor sheath 0.25 × as long as hind tibia. Colouration ( Figs. 20A–C ). Body (excluding wings and legs) black. Clypeus, malar space, mandible except for teeth, palpi, postero-dorsal and postero-ventral corners of pronotum, scutellum, postscutellum, tegula, and subtegular ridge yellow to whitish yellow. Mesoscutum, mesopleuron, and metapleuron red to reddish brown. Posterior margins of T II to T VII, lateral sides including laterotergites of T III to T VII, and metasomal sternites except for sclerites white. Collar partly tinged with yellow and reddish brown. Anterior part of mesoscutum more or less darkened. Wings hyaline. Veins and pterostigma brown to blackish brown except for yellow wing base. Fore and mid legs reddish brown to yellowish brown. Hind coxa, trochanter, and femur reddish brown except for coxa and trochanter partly tinged with yellow. Hind trochantellus, tibia except for base and apical part, and hind tibial spurs whitish yellow. Hind tibia except for base and apical part and hind tarsus blackish brown. Male ( n = 1). Similar to female. Body length 7.2 mm . Antenna with 37 flagellomeres. Hind femur 4.75 × as long as maximum depth in lateral view. T I 1.6 × as long as maximum width. A pair of longitudinal markings along frontal orbit, face, pronotum, propleuron, a pair of markings of antero-lateral part of mesoscutum, and longitudinal stripe of mesopleuron yellow ( Figs. 20D, E ). Base of hind tibia paler than female ( Fig. 20D ). Fig. 20. Campodorus rufidorsalis sp. nov . (A–C: KPM-NK 84958, holotype, female; D, E: KPM-NK 84959, paratype, male) ― A, D: lateral habitus; B, E: head, frontal view; C: propodeum, dorsal view. Distribution. Japan (Honshu). Bionomics. Unknown. Etymology . The specific name is from “ rufi -” (reddish) plus “ dorsalis ” (back). This species has red mesoscutum. Remarks. This species resembles Ca. formosus ( Gravenhorst, 1829 ) in the body colouration and the short malar space but can be distinguished by the T I 1.5 × as long as maximum width (1.6–1.7 × in Ca. formosus ), the red mesopleuron (black in female of Ca. formosus ), and the black base of hind tibia (reddish in Ca. formosus ).