Gnotus striatus ( Uchida, 1930 )

Watanabe, Kyohei, 2021, Taxonomic and Zoogeographic Study of the Japanese Phygadeuontinae (Hymenoptera, Ichneumonidae), with Descriptions of 17 New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 50, pp. 55-136 : 115-117

Gnotus striatus ( Uchida, 1930)

(SJN: Shiwa-chibi-togari-himebachi)

( Figs 51A–D , 62M , 65U )

Leptocryptus striatus Uchida, 1930: 335 .

Description. Female (n=15). Body length 4.2–7.1 mm. Body polished, covered with silver setae.

Head. Clypeus 1.7 times as wide as maximum length, its anterior margin rounded and narrowly depressed, without teeth. Face densely punctate ( Fig. 51B ). MSL 0.95–1.0 times as long as BWM. Frons sparsely and finely punctate. Gena and vertex finely punctate. OOL as long as or slightly longer than POL. OOL and POL longer than OD. Occipital carina complete, its lower end strongly curved inward and joined with hypostomal carina slightly distant from mandibular base. Upper tooth of mandible slightly longer than (ca. 2.0 times as long as) lower tooth ( Fig. 62M ). Base of mandible flat. Antenna with 20–25 flagellomeres. Subapical part of antenna slightly wider than basal part. FL III 3.3–4.0 times as long as maximum depth in lateral view.

Mesosoma. Lateral part of pronotum largely smooth. Epomia distinct. Mesoscutum minutely punctate, strongly polished. Notaulus distinct, fading out in front of center of mesoscutum. Scutellum punctate, with a lateral longitudinal carina except for apex. Mesopleuron smooth except for fine punctures on areas below subtegular ridge and speculum. Subtegular ridge strongly raised. Posterior transverse carina of mesosternum absent in front of mid coxae. Metapleuron finely punctate, with a complete juxtacoxal carina. Propodeal carinae complete except for median section of lateromedian longitudinal carina usually partly indistinct. Area basalis distinct ( Figs 51C , 65U ). Area superomedia distinct ( Figs 51C , 65U ), its lateral sides usually partly indistinct. Postero-lateral corner of area dentipara weakly projected. Propodeum largely smooth. Length of fore wing 3.7–5.75 mm. Areolet absent. Vein 2m-cu of fore wing with two bullae. Nervellus slightly inclivous, intercepted behind the middle. Hind femur 4.9–5.0 times as long as maximum depth in lateral view. Hind TS I: II: III: IV: V = 2.0: 0.9: 0.6: 0.4: 0.5. Tarsal claws simple.

Metasoma. T I 2.7 times as long as maximum width, longitudinally striate ( Fig. 51D ). Median dorsal carina of T I present basally. Dorsolateral carina of T I present but indistinct posteriorly. T II to T V wider than long, densely and finely punctate, basal part of T II with a few longitudinal striae ( Fig. 51D ). Ovipositor sheath 0.65 times as long as hind tibia. Ovipositor straight, without a nodus and ventral teeth.

Coloration ( Figs 51A–D ). Body (excluding wings) dark brown to black. Mandible except for darkened apex, palpi, tibial spurs, membranous part of metasomal sternites, and ovipositor yellowish brown. Posterior margins of T IV to T VII narrowly tinged with yellowish brown. Scutellum and postscutellum sometimes tinged with yellowish brown. Wings hyaline, with clouded area behind of pterostigma. Veins brown to dark brown. Pterostigma dark brown except for pale base.

Male. Unknown.

Materials examined. JAPAN: SEHU, F (lectotype), Hokkaido, Sapporo , 4/9, 1926, Uchida leg. ; KPM-NK 82064 , F, Hokkaido, Otofuke Town, Kibougaoka-koen , 25. VI. 2017, K. Watanabe leg. ; KPM-NK 82057 , F, Tochigi Pref., Kuriyama Vil., Kinunuma , 1. VIII. 2004, 14. VIII. 2004, H. Makihara leg. (MsT) ; KPM-NK 82052 , F, Kanagawa Pref., Yokosuka City, Take, Mishimasya , 9. V. 2001, I. Kawashima leg. ; KPM-NK 82062 , F, Kanagawa Pref., Odawara City, Iriuda , KPMNH, 19. VI. 2014, H. Taru leg. ; KPM-NK 82054 , F, Toyama Pref., Toyama City, Arimine, Jyuroudani , 16–25. VIII. 2009, M. Watanabe et al. leg. (MsT) ; KPM-NK 82053 , F, ditto, 25. VIII. – 1. IX. 2009 ; KPM-NK 82055 , 82056 , 2 F, Toyama Pref., Nanto City, Togamura, Kamimomose , 21–28. VII. 2009, M. Watanabe et al. leg. (MsT) ; KPM-NK 82059 , F, Yamanashi Pref., Koushu City, Katsunuma Town, Ootaki-fudou , 9. VII. 2007, K. Watanabe leg. ; KPM-NK 82058 , F, ditto, 22. V. 2010 ; KPM-NK 82061 , F, Nagano Pref., Outaki Vil., Mt. Ontakesan, Hakkaisan , 16. VII. 2007, K. Watanabe leg. ; KPM-NK 82063 , F, Hyogo Pref., Kami Town, Oziro-ku, Niiya , Mikata-kogen , 26. VI. – 18. VII. 2011, S. Fujie leg. (MsT) ; KPM-NK 82051 , F, Hyogo Pref., Sanda City, Fukushima, Arimafuji park, 16. V. 2017, K. Watanabe leg. ; KPM-NK 82060 , F, Tottori Pref., Wakasa City, Mt. Hyonosen, Oodanganaru, 6. VIII. 2011, K. Watanabe leg.

Distribution. Japan (Kunashiri Is., Hokkaido, and Honshu).

Bionomics. Unknown.

Figures

Fig. 51. Gnotus striatus (Uchida, 1930), KPM-NK 82064, female from Japan ― A, lateral habitus; B, head, frontal view; C, propodeum, dorsal view; D, T I to T III, dorsal view.

Fig. 62. Bathythrix kuwanae Viereck, 1912 (A, KPM-NK 81718), Ba. margaretae Sawoniewicz, 1980 (B, KPM-NK 55017), Ba. thomsoni (Kerrich, 1942) (C, KPM-NK 81675), Diaglyptidea conformis (Gmelin, 1790) (D, KPM-NK 81645), Nipponaetes haeussleri (Uchida, 1933) (E, KPM-NK 81832), Acrolyta japonica sp. nov. (F, N, KPM-NK 54996, holotype), Acr. rufocincta (Gravenhorst, 1829) (G, KPM-NK 81732), Surculus japonicus sp. nov. (H, KPM-NK 81861, holotype), Isadelphus nigrus sp. nov. (I, KPM-NK 82003, holotype), Lochetica japonica sp. nov. (J, KPM-NK 81989, holotype), Megacara similis Sheng, 1999 (K, KPM-NK 81837), Gnotus chionops (Gravenhorst, 1829) (L, KPM-NK 82100), Gn. striatus (Uchida, 1930) (M, KPM-NK 82060), and Acr. flavicoxis Sheng & Sun, 2014 (O, KPM-NK 81837), females from Japan ― A–C, head, frontal view; D, E, head, lateral view; F–K, anterior margin of clypeus; L, M, mandible; N, O, basal part of antenna, lateral view.

Fig.65.Acrolyta japonica sp. nov. (A, KPM-NK 54996, holotype), Diaglyptidea conformis (Gmelin,1790) (B, KPM-NK 81650), Micraris ryukyuensis sp. nov. (C, KPM-NK 81873, holotype), Bathythrix kuwanae Viereck, 1912 (D, KPM-NK 81718), Bentyra ryukyuana sp. nov. (E, KPM-NK 81887, holotype), Chirotica matsukemushii (Matsumura, 1926) (F, KPM-NK 81906), Paraphylax politus sp. nov. (G, KPM-NK 55079, holotype), Pa. transstriatus sp. nov. (H, KPM-NK 55080, holotype), Pa. yakushimensis sp. nov. (I, KPM-NK 55081, holotype), Pa. yambarensis sp. nov. (J, KPM-NK 55085, holotype), Ethelurgus sodalis kumatai Kusigemati, 1983 (K, KPM- NK 81938), Aclastus etorofuensis (Uchida, 1936) (L, KPM-NK 81976), Hemiteles kuro sp. nov. (M, KPM-NK 55024, holotype), H. yamatonis sp. nov. (O, KPM-NK 55033, paratype), Isadelphus nigrus sp. nov. (P, KPM-NK 82003, holotype), Lochetica japonica sp. nov. (Q, KPM-NK 81989, holotype), Mastrus molestae (Uchida, 1933) (R, KPM-NK 81987), Ma.takadai Momoi, 1970 (R, KPM-NK 81979), Gnotus chionops (Gravenhorst, 1829) (L, KPM-NK 82104), Gn. striatus (Uchida, 1930) (M, KPM-NK 82061), Orthizema semanotae Sheng & Sun, 2014 (V, KPM-NK 82047), Nipponaetes haeussleri (Uchida, 1933) (W, KPM-NK 81832), and Surculus japonicus sp. nov. (X, KPM-NK 81861, holotype), females from Japan ― A-W, carinae around area superomedia of propodeum, dorsal view; X, T I, lateral view.