Notopygus japonicus Watanabe, 2024, sp. nov.
Creators: name: Watanabe, Kyohei
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Notopygus
Notopygus japonicus

description: Notopygus japonicus sp. nov.   (SJN: Nippon-magari-maru-himebachi)  
(Figs. 5A–E, 38B, 40B, 41F, L, N)  
 Type series. Holotype: JAPAN, KPM-NK 84831, F, Nagano Pref., Outaki Vil., Mt. Ontake-san, Tanohara, 31. VII. 2013, S. Shimizu leg. Paratype: JAPAN, KPM-NK 91473, F, Yamanashi Pref., Hokuto City, Masutomi, Biwakubo-sawa, 28. VII. 2007, K. Watanabe leg.   
 Description. Female (n = 2). Body length 11.3–11.5 (HT: 11.5), polished and covered with punctures and brown setae.   
Head 0.6–0.65 (HT: 0.65) × as long as wide in dorsal view, punctate. Clypeus 3.5–3.6 (HT: 3.5) × as broad as high, rather sparsely punctate, lower margin subtruncate (Fig. 40B), thick in lateral view. Face 2.3–2.5 (HT: 2.3) × as broad as high, punctate reticulate, convex medially in lateral view. Frons weakly concave above antennal sockets, without a pair of horns (Fig. 38B). Dorsal profile of gena as Fig. 38B. Occipital carina complete. Occiput flat in front of dorso-median part of occipital carina. Length of malar space 0.2–0.25 (HT: 0.25) × as long as basal width of mandible. POL 1.1–1.2 (HT: 1.1) × as long as OD. OOL 1.1–1.35 (HT: 1.1) × as long as OD. Antenna with 36–37 (HT: 37) flagellomeres. FL I 2.5–2.65 (HT: 2.65) × as long as maximum depth, 1.1–1.25 (HT: 1.25) × as long as FL II.  
Mesosoma punctate. Pronotum densely punctate. Epomia short. Mesoscutum with short and weak notaulus. Mesopleuron with large smooth area around speculum (Fig. 5C). Epicnemial carina present laterally and ventrally. Propodeum punctate, all carinae present except for lateral sections of anterior transverse carina absent. Median section of anterior transverse carina weak (Fig. 41F). Area superomedia as long as wide, covered with weak irregular rugae (Fig. 41F). Fore wing length 9.0–9.3 (HT: 9.0) mm. Areolet present, petiolated anteriorly, received vein 2m-cu slightly based of the outer angle (Fig. 5D). Fore wing vein 1cu-a interstitial to vein M&RS (Fig. 5A). Nervellus subvertical, intercepted slightly posterior the middle. Tarsal claws simple. Hind femur 3.7 × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 3.2: 2.0: 1.5: 0.9–1.0 (HT: 1.0): 1.0–1.1 (HT: 1.1). Hind tibia shorter than combined length of hind TS I, TS II, and TS III.  
Metasoma finely punctate. T I 2.05–2.15 (HT: 2.15) × as long as maximum width, latero-median carina present basal 0.75 of T I, area between latero-median carina with a strong concavity. T II 0.9–1.0 (HT: 0.9) × as long as maximum width, a pair of longitudinal carinae present on basal 0.4 of T II (Fig. 5E). Posterior margins of T III to T VI each without notch (Fig. 41L). Posterior end T VIII weakly projected in lateral view (Fig. 41N). Ovipositor sheath 0.25 × as long as hind tibia.  
Colouration (Figs. 5A–E). Body (excluding wings and legs) black. Lower lateral sides of clypeus yellowish brown. Malar space and mandible except for teeth partly tinged with yellowish brown to brown. Palpi yellowish brown. Dorso-lateral corner of pronotum, antero-dorsal corner of mesopleuron, and mesepimeron tinged with dark yellowish brown. Posterior part of T I, T II, and T III dark reddish brown. Sclerotized part of metasomal sternites partly tinged with dark reddish brown. Ovipositor yellowish brown. Wings brownish hyaline. Veins and pterostigma blackish brown except for yellowish-brown wing base. Fore and mid legs yellowish brown except for coxae and trochanters. Hind leg blackish brown to black, except for hind tibia largely reddish brown.  
Male. Unknown.  
 Distribution. Japan (Honshu).   
 Bionomics. Unknown.   
 Etymology. The specific name is from Japan.   
 Remarks. This species resembles N. carpathicus Kasparyan, 2002 but can be distinguished by the following combination of character states: length and maximum width of T II almost equal length (length shorter than maximum width in N. carpathicus); posterior margins of T III to T VI each without notch (each with notch in N. carpathicus); hind tibia shorter than combined length of hind TS I, TS II, and TS III (same length in N. carpathicus).
description: Published as part of Watanabe, Kyohei, 2024, Taxonomic Study of Japanese Ctenopelmatinae (Hymenoptera, Ichneumonidae), with Descriptions of 22 New Species, pp. 39-102 in Bulletin of the Kanagawa Prefectural Museum (Natural Science) 53 on pages 45-47, DOI: 10.5281/zenodo.13237363