Alloplasta nigripes ( Meyer, 1930 )

Watanabe, Kyohei, 2022, Revision of the genus Alloplasta Förster, 1869 (Hymenoptera, Ichneumonidae Banchinae) from Japan, Zootaxa 5188 (1), pp. 55-73 : 66-68

Alloplasta nigripes ( Meyer, 1930)

( Figs 2 B, C , 8 A, B )

Meniscus plantarius var. nigripes Meyer, 1930: 173 .

Amersibia longipetiolaris Uchida, 1952: 23 .

Specimens examined. JAPAN: [Honshu] 1 F, Aomori Pref., Aomori City, Yokouchi-Yaegiku , 7 Jun. 1992, T. Ichita leg. ( NIAES) ; 1 F, Miyagi Pref., Mt. Zao, Gaga , 24–25 May 1958 ( KPMNH) ; 1 F, Fukushima Pref., Hinoemata , 9–10 Jun. 1990, K. Konishi leg. ( NARO) ; 1 F, Fukushima Pref., Mts. Adatara, Shiozawa , 26 May 1991, K. Konishi leg. ( NARO) ; 1 F, Tochigi Pref., Yunishigawa, Utsurugizawa , 14 May 2003, E. Katayama leg. ( KPMNH) ; 1 F, Tochigi Pref., Nasushiobara City, Wakamiyama , 5 May 2006, T. Matsumura leg. ( KPMNH) ; 1 F, Tochigi Pref., Nasushiobara City, Fujinitayama , 14–22 May 2007, T. Matsumura leg., MT ( KPMNH) ; 1 F, Tochigi Pref., Nasushiobara City, Fukuwata spa, 22 Apr. 2008, E. Katayama leg. ( KPMNH) ; 1 F, Tochigi Pref., Nasushiobara City, Ohkawa , 15 May–13 Jun. 2011, T. Nakayama leg., MT ( KPMNH) ; 1 F, Saitama Pref., Hannou City, Mt. Tenranzan , 16 Apr. 1970, H. Suda leg. ( KPMNH) ; 1 F, Saitama Pref., Minano , 16 May 1984, T. Nambu leg. ( NARO) ; 1 F, Saitama Pref., Hidaka, Mt. Hiwada-san , 30 Apr. 1989, T. Nambu leg. ( NARO) ; 5 M, Saitama Pref., Ogawa Town, Aoyama , 16 Apr. 1993, T. Nambu leg. ( NARO) ; 1 F, Tokyo, Seijo , 19 Apr. 1939, N. Kumazawa leg. ( NARO) ; 1 M, Tokyo, Fuchu , 31 Mar. 1937, T. Ishii leg. ( NARO) ; 2 F, Tokyo, Toshima , Nagasaki, 29–30 Apr. 1963, M. Mochizuki leg. ( KPMNH) ; 1 F, Tokyo, Mt. Takao , 3 May 1964, J. Minamikawa leg. ( NARO) ; 1 F, Kanagawa Pref., Yokohama , 2 May 1955, K. Sato leg. ( NARO) ; 1 F, Kanagawa Pref., Kawasaki City, Kakio , 16 Apr. 1956, R . Ishikawa leg. ( KPMNH) ; 3 M, Kanagawa Pref., Aiko, Mt. Bukka , 10 Apr. 1956, R . Ishikawa leg. ( KPMNH) ; 1 F & 1 M, ditto, 9 Apr. 1957 ( KPMNH) ; 1 M, Kanagawa Pref., Kamakura City, Kitakamakura , 3 May 1957, H. Nagase leg. ( KPMNH) ; 1 F, ditto, 3 May 1957 ( KPMNH) ; 1 M, Kanagawa Pref., Kamakura City, Kamakura , 31 Mar. 1951, H. Nagase leg. ( KPMNH) ; 1 F, ditto, 8 Apr 1951 ( KPMNH) ; 2 M, ditto, 6 Apr. 1952 ( KPMNH) ; 2 F, ditto, 20 Apr. 1952 ( KPMNH) ; 1 F, ditto, 30 Mar. 1953 ( KPMNH) ; 1 F, ditto, 19 Apr. 1959 ( KPMNH) ; 1 F, ditto, 17 Apr. 1982 ( KPMNH) ; 1 F, Kanagawa Pref., Kamakura City, Nikaido , 27 Apr. 2001, H. Nagase leg. ( KPMNH) ; 1 F, Kanagawa Pref., Yokosuka City, Mt. Miurafuji to Mt. Takeyama , 4 May 2013, K. Watanabe leg. ( KPMNH) ; 1 F, Kanagawa Pref., Isehara Town, Mt. Ooyama , 29 Apr. 1957, H. Nagase leg. ( KPMNH) ; 1 F & 1 M, Kanagawa Pref., Hadano City, Mt. Koubou-yama , 5 Apr. 2007, K. Watanabe leg. ( KPMNH) ; 1 F, Kanagawa Pref., Hadano City, Mt. Zukko-yama , 16 Apr. 2016, K. Watanabe leg. ( KPMNH) ; 1 F, Kanagawa Pref., Yamakita Town, Mikuni-toge , 26 May 2001, H. Nagase leg. ( KPMNH) ; 1 F, Kanagawa Pref., Yamakita Town, Mt. Mikuni-yama , 21 Jun. 2013, T. Taniwaki leg., Flight interception trap ( KPMNH) ; 1 F, Chiba Pref., Matsudo City, Kuriyama , 18 Apr. 1963, H. Suda leg. ( KPMNH) ; 2 F, Chiba Pref., Funabashi City, Narashinohara , 3 May 1962, H. Suda leg. ( KPMNH) ; 1 F, Chiba Pref., Funabashi City, Ohjinbou-cho, Kenminnomori , 30 Apr. 1999, H. Suda leg. ( KPMNH) ; 1 F, Chiba Pref., Narita City, Sanrizuka , 2 May 1968, H. Suda leg. ( KPMNH) ; 1 F, Chiba Pref., Shisui City, Motosakura to Kamimoto , 12 Apr. 1974, H. Suda leg. ( KPMNH) ; 1 F, Chiba Pref., Sakura City, Shiminnomori , 31 Apr. 2004, H. Suda leg. ( KPMNH) ; 1 F, Chiba Pref., Nagara Town , 10 Apr. 2004, H. Suda leg. ( KPMNH) ; 1 F, Yamanashi Pref., Kawaguchiko Town, Mt. Tenjyoyama , 10 Jun. 1986, H. Suda leg. ( KPMNH) ; 1 F, Yamanashi Pref., Uenohara, Kawai , 16 Apr. 1991, H. Suda leg. ( KPMNH) ; 1 F, Yamanashi Pref., Koushu City, Kaminikkawa-toge , 16 Jun. 2007, K. Watanabe leg. ( KPMNH) ; 1 F, Nagano Pref., Karuizawa Town, Asama-kogen , 18 May 1970, H. Suda leg. ( KPMNH) ; 2 F, Nagano Pref., Outaki Vil., Mt. Ontake-san, Hakkaisan , 6 Jun. 2015, M. Ito leg. ( KPMNH) ; 1 F, ditto, 13 Jun. 2015, K. Watanabe leg. ( KPMNH) ; 1 F, Aichi Pref., Shitara Town, Uradani , 23–29 May 1994, K. Yamagishi leg., YPT ( MU) ; 1 F & 3 M, Aichi Pref., Toyota City, Takiwaki , 22 Mar.–7 Apr. 2002, Y. Kurahashi leg., MT ( MU) ; 2 F, Aichi Pref., Nagoya, Moriyama, Obata Kitayama , 5 Apr. 2013, S. Ohkusa leg. ( KPMNH) ; 1 F, Gifu Pref., Kani, Katabira , 10–16 Apr. 2004, K. Yamagishi leg., MT ( MU) ; 2 F, Shiga Pref., Shiga Town, Kitahira-toge to Shakadake , 18 May 2001, R. Matsumoto leg. ( OMNH) ; 1 F, Kyoto Pref., Maizuru City, Sorayama , 17 May 2003, R. Matsumoto leg. ( OMNH) ; 1 F, Osaka Pref., Kaizuka City, Izumikatsuragi-san , 22 May 2000, R. Matsumoto leg. ( OMNH) ; 1 F, Hyogo Pref., Inagawa Town, Oya-san , 16 May 1999, R. Matsumoto leg. ( OMNH) ; 1 F, Hyogo Pref., Kobe City, Yamadamachi, Aina , 3 May 2001, H. Yoshida leg. ( OMNH) ; 1 F, Yamaguchi Pref., Shunan City, Sarayama Town , 7 Apr. 2006, S. Tanaka leg. ( OMNH) . [ Izu Is. ] 1 F , Tokyo, Izuoshima Is., Oshima Town , Motomachi , Mt. Omaruyama , 4 May 2012, K. Tsujii leg. ( KPMNH) . [ Kyushu ] 1 F , Oita Pref., Mts. Kuju, Mt. Kurodake , 19–20 May 1984, K. Konishi leg. ( NARO) . [ Ryukyu Isls. ] 1 F , Kagoshima Pref., Yakushima Is., Shiratani, 6 May–20 Jun. 2000, T. Murata leg. ( MT) ( MU) . KOREA: 3 F, Gyeongido, Seo-myeon, Magok-li , 4 May–6 Jun. 2006, P. Tripotin leg., MT ( KPMNH) .

Description. Female (n = 100). Body length 10.0– 14.5 mm, polished and covered with punctures and silver setae.

Head 0.55–0.6 × as long as wide. Clypeus 2.5 × as broad as high, sparsely punctate, slightly convex in lateral view. Face 1.8–1.9 × as broad as high, densely punctate, convex medially in lateral view. Malar space 0.4–0.45 × as long as basal mandibular width. POL 1.25–1.6 × as long as OD. OOL 1.0–1.4 × as long as OD. Vertex with long setae, ca. 2.0 × as height as lateral ocellus in lateral view. Antenna with 35–42 flagellomeres. FL I 4.0–4.4 × as long as maximum depth in lateral view and 1.8 × as long as FL II.

Mesosoma densely punctate. Epomia absent. Speculum with a conspicuous smooth area. Mesosternum with long and dense setae, ca. 1.2 × as long as maximum depth of FL I in lateral view. Propodeum with irregular rugae dorsally, posterior transverse carina largely absent except for short, trace-like ridge. Fore wing length 8.0– 10.5 mm. Areolet received vein 2m-cu near center. Nervellus intercepted at middle or slightly anterior to middle ( Fig. 1 B ). Hind femur 6.0–6.4 × as long as maximum depth in lateral view. Ratio of length of hind first to fifth tarsomeres 4.1–4.5: 2.0: 1.4–1.5: 0.85–0.9: 0.9–1.0. Hind second tarsomere 5.0–6.0 × as long as maximum depth in lateral view. Tarsal claws pectinate.

Metasoma. T I 1.8–2.05 × as long as maximum width, densely punctate except for smooth areas on apex and base. T II 1.0–1.25 × as long as maximum width. T II to T V finely punctate, with minute transverse striae. Ovipositor sheath 1.0–1.2 × as long as hind tibia.

Coloration ( Figs 2 B , 8 A, B ). Body (excluding wings and legs) black. Clypeus tinged with reddish brown apically. Teeth tinged reddish brown to yellow. Face usually with a pair or longitudinal yellow stripes along eye. Postero-lateral corner of pronotum and tegula tinged reddish brown. Mesoscutum sometimes with a pair of yellow markings antero-laterally. Each posterior margin of T II to T VI narrowly tinged reddish brown to yellowish brown. Ovipositor reddish brown. Wings hyaline. Veins and pterostigma blackish-brown except for brown wing base. Legs black except for tibiae with white base (white area sometimes indistinct). Tibial spurs sometimes tinged yellowish brown.

Male (n = 71). Similar to female. Clypeus 2.7–2.9 × as broad as high. Malar space 0.25–0.4 × as long as basal mandibular width. POL 1.4–1.7 × as long as OD. Antenna with 43–45 flagellomeres. FL I 1.65–1.75 × as long as FL II. Posterior transverse carina of propodeum complete. Hind femur 5.7–6.1 × as long as maximum depth in lateral view. Ratio of length of hind second and fourth tarsomeres 2.0: 0.9–1.0. Tarsal claws simple.

Coloration ( Fig. 2 C ). Similar to female. Clypeus reddish brown with transverse yellow marking except for dorsal black margin. Face and lower part of frons with a pair of longitudinal yellow stripes along eye. Mandible with large yellow marking. Palpi largely yellow. Dorso-lateral corner of pronotum, tegula and a pair of antero-lateral spots of mesoscutum yellow. Fore coxa and fore and mid trochanters usually with yellow areas. Tibial spurs yellowish white. Apices of fore and mid tibiae tinged whitish yellow. Basal white areas of tibiae larger than female. Hind second to fourth tarsal segments usually white.

Distribution. Japan (Honshu, Izuoshima Is., Sado Is., Shikoku, Kyushu and Yakushima Is.). Outside Japan, this species has been recorded from Russia, Poland, China and Korea ( Yu et al. 2016; Kang et al. 2020).

Bionomics. Host unknown. Adults were collected in March to June in Japan.

Remarks. This is the first record of this species from Yakushima Is. The description of A. longipetiolaris in the key of Kasparyan (2007) may be not this species and is probably a misidentification. The body coloration of this species has a relatively larger intraspecific variation than other species.

Figures

FIGURE 1. Dorsal habitus of Alloplasta kuslitzkii Kasparyan, 2007 (A) and A. nigripes (Meyer, 1930) (B, C), female (A, B) and male (C).

FIGURE 2. Alloplasta brevipetiolaris Kang & Lee, 2020, female from Japan—A: lateral habitus; B: head, frontal view; C: metasomal tergites, dorso-lateral view.

FIGURE 8. Alloplasta nigripes (Meyer, 1930), female from Japan—A: lateral habitus; B: head, frontal view.