Woldstedtius kuroashii (Uchida, 1957)

Morishita, Shunsuke & Watanabe, Kyohei, 2022, Revision of the genus Woldstedtius Carlson, 1979 (Hymenoptera, Ichneumonidae, Diplazontinae) from Japan, Deutsche Entomologische Zeitschrift 69 (1), pp. 45-64 : 45

Woldstedtius kuroashii (Uchida, 1957)

Figs 5A-F , 9B, I

Homocidus flavolineatus var. kuroashii Uchida, 1957: 251.

Syrphoctonus holarcticus Diller, 1969: 548. Syn. nov.

Materials examined.

Type series: JAPAN: [Honshu] 1 F (holotype of H. flavolineatus var. kuroashii ), Nagano Pref., Mt. Norikura , 30 Jul 1954, Townes family leg. ( AEIC) . GERMANY: 1 F (paratype of S. holarcticus ), Ober-Bayern, Garmisch , 21 Jul 1926, E. Bauer leg. ( ZSM). Non-types : JAPAN: [Hokkaido] 4 F, Hokkaido, Hidaka Town, Uenzaru-gawa, 10 Jul-1 Aug 2007, A. Ueda leg. (MT) ( KPMNH); 1 M, Hokkaido, Sapporo City, Mt. Soranumadake , 14 Jun-4 Jul 2007, A. Ueda leg. (MT) ( KPMNH); 1 F, Hokkaido, Kamikawa Town , Ginsendai, 1 Aug 2021, K. Watanabe leg. (TMNH). [Honshu] 1 F, Fukushima Pref., Kitakata City, Yamato, Zouriduka-Mt. Iide, 11 Jul 2013, K. Yoshiga leg. ( KPMNH); 1 M, Tochigi Pref., Kuriyama Vil., Yamato, Kinunuma, 1-14 Jul 2004, H. Makihara leg. (MT) ( KPMNH); 3 F, Gunma Pref., Tsumagoi Vil., Kanbara, Takaminekogen, 3 Sep 2015, K. Watanabe leg. ( KPMNH); 1 M, Niigata Pref., Nagaoka City, Suyoshi, Mt. Nokogiriyama , 7 Jun 2014, S. Shimizu leg. ( KPMNH); 1 F, Tokyo, Chiyoda, Imperial Palace, Fukiagegyoen, Otakinagare, 14-26 Apr 2011 (MT) ( NSMT); 2 M, Tokyo, Ome City, Mt. Mitakesan , 1 Jun 2008, M. Gunji leg. ( KPMNH); 1 M, Kanagawa Pref., Fujino Town , Mt. Jinbayama , 7 Jun 2008, K. Watanabe leg. ( KPMNH); 1 M, Kanagawa Pref., Hadano City, Chimura, Mt. Zukkoyama , 16 Apr 2017, K. Watanabe leg. ( KPMNH); 1 M, Kanagawa Pref., Hakone Town , Mt. Kamiyama , 21 Jun 2010, M. Takakuwa leg. ( KPMNH); 1 M, Kanagawa Pref., Yamakita Town , Mt. Komotsurushiyama , 23 Jul 2014, T. Taniwaki leg. ( KPMNH); 1 M, Kanagawa Pref., Yamakita Town , Mt. Hinokiboramaru , 17 Jul 2014, T. Taniwaki leg. ( KPMNH); 1 F, Yamanashi Pref., Fujiyoshida City, Takizawarindo, 7-11 Sep 2017 A. Owaki leg. (MT) ( KPMNH); 1 F, Yamanashi Pref., Narusawa Vil., Fujirindo, 5 Sep 2015 K. Watanabe leg. ( KPMNH); 1 F, Shizuoka Pref., Shizuoka City, Mt. Tyausudake , 28 Jul 1970, H. Takizawa leg. (SEHU); 1 F, Shizuoka Pref., Honkawane Town , Yamainudan, 14 Jun 2008, K. Watanabe leg. ( KPMNH); 6 M, ditto, 14 Jun 2008, K. Watanabe leg. ( KPMNH); 1 M, Gifu Pref., Kani City, Katabira, 17-23 Apr 2004, K. Ito leg. (MT) ( MU); 2 F, Nagano Pref., Otaki Vil., Mt. Ontakesan , Tanohara, 8 Aug 2007, K. Watanabe leg. ( KPMNH); 1 M, Nagano Pref., Otaki Vil., Mt. Ontakesan , Hakkaisan, 6 Aug 2010, K. Watanabe leg. (TMNH); 1 F, ditto, 7 Aug 2010, K. Watanabe leg. (TMNH); 1 F, ditto, 5-9 Aug 2010, K. Watanabe leg. (MT) ( KPMNH); 7 M, ditto, 5-9 Aug 2010, K. Watanabe leg. (MT) ( KPMNH); 1 F, Toyama Pref., Toyama City, Inonedani, 21-28 Jul 2009, M. Watanabe leg. (MT) ( KPMNH); 1 F, ditto, 11-16 Aug 2009, M. Watanabe leg. (MT) ( KPMNH); 1 F, ditto, 1-8 Sep 2009, M. Watanabe leg. (MT) ( KPMNH); 1 F, ditto, 8-15 Sep 2009, M. Watanabe leg. (MT) ( KPMNH); 6 F, ditto, 15-22 Sep 2009, M. Watanabe leg. (MT) ( KPMNH); 1 F, Toyama Pref., Toyama City, Jurodani, 11-16 Aug 2009, M. Watanabe leg. (MT) ( KPMNH); 1 M, Ishikawa Pref., Hakusan City, Sannomiya, 15 Oct-6 Nov 2009, H. Fukutomi leg. (MT) ( MU); 1 F, Ishikawa Pref., Hakusan City, Yawata, 7-24 Oct 2009, H. Fukutomi leg. (MT) ( MU); 1 M, Fukui Pref., Ikeda Town , Mizuumi, Mt. Hekosan , 18 Jun 2016, S. Shimizu leg. ( KPMNH); 1 F, Hyogo Pref., Sasayama City, Mt. Koganegadake , 14 May 2014, Y. Ueyama leg. ( KPMNH)

Description.

Female (n = 33). Body length 5.5-8.5 mm, polished, coriaceous. covered with silver setae.

Head 0.5-0.53 × as long as wide. Clypeus 2.0-2.3 × as broad as high, convex basally in lateral view. Face 2.2-2.3 × as broad as high, densely punctate, convex medially in lateral view (Fig. 9B ), separated from clypeus by shallow clypeal sulcus. Inner orbits almost parallel (Fig. 5B ). Length of malar space 1.0-1.2 × as long as basal mandibular width. POL 2.16-2.3 × as long as OD. OOL 1.0-1.38 × as long as OD. POL 1.86-2.1 × as long as OOL. Antenna with 23-25 flagellomeres. FL I 1.25-1.3 × as long as FL II. MP IV 1.2-1.29 × as long as MP V.

Mesosoma. Lateral aspect of pronotum rugulose or rarely strigose anteriorly. Mesoscutum finely and densely punctate (separated by ca. 1.0 × their diameter) (Fig. 5C ). Scutellum finely and sparsely punctate (separated by ca. 1.5-2.5 × their diameter) (Fig. 5C ). Mesopleuron coarsely and sparsely punctate except for speculum. Sternaulus weakly impressed. Propodeum rounded in lateral view, without rugae (Fig. 5D ), without carinae except for anterior part of pleural carina. Fore wing length 5.8-6.9 mm. Nervellus intercepted below middle. Hind femur 4.0-4.5 × as long as maximum depth in lateral view. Hind tibia 7.8-8.4 × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 1.0: 0.6: 0.4-0.5: 0.3: 0.2-0.3.

Metasoma. T I rectangular in dorsal view (Fig. 9I ), 1.1-1.25 × as long as maximum width, rugulose laterally. Latero-median carina present on basal ca. 0.5 of T I (Fig. 9I ). T II 0.65-0.8 × as long as maximum width, striate anteriorly and strigose laterally.

Coloration (Fig. 5A-D ). Body (excluding wings and legs) black. Face with a large whitish-yellow median spot (this spot rarely obscured). Palpi, tegula, subtegular ridge and mesepisternum yellow. Mandible whitish-yellow except for apex and base. Lateral aspect of pronotum with a whitish-yellow spot posteriorly. Mesoscutum with whitish-yellow shoulder marks (these marks rarely disappeared). Scutellum with a whitish-yellow spot apically. Veins and pterostigma brown to blackish-brown except for yellow wing base. Legs blackish-brown to black. Apex of fore coxa and base of hind tibia tinged with white. Trochanters and trochantelli white. Femora, fore and mid tibiae and tarsi sometimes (including paratype of W. holarcticus ) orange to brown. Fore and mid coxae each with a white stripe dorsally (this stripe often obscured). Base of hind femur tinged with reddish-brown.

Male (n = 26). Similar to female. Inner orbits weakly divergent downward (Fig. 5F ). Antenna with 22-25 flagellomeres. Punctures on mesoscutum weaker than female. T I 1.14-1.26 × as long as maximum width. T II 0.83-0.93 × as long as maximum width.

Coloration (Fig. 5E, F ). Body (excluding wings and legs) black. Clypeus, palpi, face, ventral surface of antenna, malar space, propleuron, epicnemium, mesosternum, tegula, subtegular ridge and mesepisternum whitish-yellow. Gena tinged with whitish-yellow ventrally. Mandible whitish-yellow, except for apex. Lateral aspect of pronotum tinged with whitish-yellow ventrally and posteriorly. Mesopleuron with a large whitish-yellow marking, it enlarged anteriorly. Scutellum with a whitish-yellow spot apically. T III with a pair of whitish-yellow spots anteriorly (sometimes these spots united into a single spot). T IV and T V each with a transverse whitish-yellow band anteriorly. Wings hyaline. Veins and pterostigma brown to blackish-brown except for yellow wing base. Legs yellow to yellowish-brown. Hind coxa and trochanter each with a dorsal blackish-brown stripe. Hind trochantellus and tibia tinged with blackish-brown.

Distribution.

Japan (Hokkaido and Honshu). Outside Japan, this species is widely distributed in the Holarctic and Oriental regions ( Yu et al. 2016).

Bionomics.

Host unknown. Most adults were collected from the treetops of broad-leaved trees.

Remarks.

This is the first record of this species from Hokkaido.

Figures

Figure 5. Woldstedtius kuroashii (Uchida, 1957) (A-D. female; E, F. male) - A, E. Habitus; B, F. Head, frontal view; C. Mesonotum, dorsal view; D. Propodeum, dorsal view.

Figure 9. Japanese Woldstedtius A, G. W. f. flavolineatus (Gravenhorst, 1829); B, I. W. kuroashii (Uchida, 1957); C, D, K. W. takagii (Uchida, 1957); E. W. alpicola sp. nov.; F. W. biguttatus (Gravenhorst, 1829); H. W. karafutensis (Uchida, 1957); J. W. punctatus sp. nov. (E, J. holotype; B, I. paratype) - A, B. head, lateral view; C. head, frontal view; D. propodeum, lateral view; E-K. T I, dorsal view.