Aptesis albibasalis ( Uchida, 1930 )

Aptesis albibasalis ( Uchida, 1930) View in CoL

[SJN: Shiromon-chibi-togari-himebachi]

( Figs. 7A–G, 76B, 77G, 78E)

Plectocryptus albibasalis Uchida, 1930: 327 .

Materials examined. JAPAN: [Hokkaido] SEHU ,

1F (lectotype), Sapporo, 20. IX. 1929, T. Uchida leg.

[Honshu] KPM-NK 102981 , F, Tochigi Pref., Ohtawara City, Shimoishigami , 22. VIII. 2000, E. Katayama leg. ; KPM-NK 102985 , F, Tochigi Pref., Nasushiobara City, Osonozawa , 5–14. VIII. 2013, T. Matsumura leg. (MsT) ; KPM-NK 102982 , F, Saitama Pref., Yorii City, Gonotsubo , 6. X. 2000, T. Nambu leg. ; KPM-NK 102975 , F, Kanagawa Pref., Atsugi City, Funako, Campus of Tokyo University of Agriculture , 25. VI. 2010, K. Watanabe leg. ; KPM-NK 102977 , F, Kanagawa Pref., Fujisawa City, Ishikawa, Maruyama-yato , 7. VI. 2001, I. Waki leg. ; KPM-NK 102976 , F, Kanagawa Pref., Miura City, Mito , 21. VI. 2007, K. Watanabe leg. ; KPM-NK 102978 , F, Kanagawa Pref., Fujino Town, Mt. Jinba-yama , 13. IX. 2009, K. Watanabe leg. ; KPM-NK 102986 , F, Kanagawa Pref., Odawara City, Kamisoga , 20. VI. 2020, K. Watanabe leg. ; KPM-NK 102979 , F, Kanagawa Pref., Hakone Town, Sengokuhara, Shissei-kaen , 29. VIII. 2014, K. Watanabe leg. ; KPM-NK 81213 , F, Yamanashi Pref., Koushu City, Katsunuma Town, Ootaki-fudo , 9. VII. 2007, M. Irie leg. ; KPM-NK 81296 , F, Yamanashi Pref., Koushu City, Yanagisawa-toge , 5. VIII. 2008, K. Watanabe leg. ; KPM-NK 81294 , F, Shizuoka Pref., Higashiizu Town, Inatori , 25. VII. 2009, T. Muraki leg. ; KPM-NK 102988 , F, Toyama Pref., Toyama City, Arimine, Jurodani , 25. VIII. – 1. IX. 2009, M. Watanabe leg. (MsT) ; KPM-NK 102980 , F, Fukui Pref., Sanzyusanken , 12. VIII. 1974, H. Kurokawa leg. [ Kyushu ] KPM-NK 102983 , 102984 , 2 F, Kagoshima Pref., Kagoshima City, Haruyamacho , 21–22. V. 2016, S. Yamane leg. ( YPT) . [Tsushima Is.] KPM-NK 102987 , F, Nagasaki Pref., Kamiagata Town, Nita-Dam , 21. VII. 2003, T. Tano leg.

Description. Female (n = 18). Body punctate and polished; covered with setae; body length 6.1–8.8 mm.

Head 0.6 × as long as wide in dorsal view; densely punctate (ISP usually shorter than DSP); covered with long setae. Eye setose ( Fig. 76B). Clypeus 1.75–1.8 × as wide as long; weakly convex in lateral view; densely punctate dorsally, transversely rugose ventrally ( Fig. 76B); lower margin rounded in frontal view, sharp and narrowly reflected in lateral view. Face 0.35–0.4 × as long as minimum width; weakly convex medially; punctures partly united into groove-like foveola. Frons with area above antennal sockets narrowly smooth; with median longitudinal carina in front of median ocellus. POL 1.4–1.8 × as OD. OOL 1.5–1.6 × as OD. Dorsal profile of gena slightly rounded in dorsal view; width gradually narrowing posteriorly ( Fig. 7D). Occipital carina complete. Malar space 1.1–1.2 × as long as basal width of mandible. Mandible flat at base; lower tooth equal in length of upper tooth. Antenna with 26–30 flagellomeres; not flattened and tapped. FL I 1.7–1.9 × as long as maximum depth in lateral view, 1.0 × as long as FL II.

Mesosoma densely punctate with long setae. Pronotum rugulose ventrally. Epomia absent. Mesoscutum with short and weak notaulus. Scutellum slightly convex in lateral view. Mesopleuron without conspicuous smooth area around speculum; punctures partly united into groove-like longitudinal foveola ( Fig. 7E). Epicnemial carina present laterally and ventrally. Sternaulus deep in anterior 0.5 of mesopleuron. Metapleuron rugose or reticulate rugose; with or without juxtacoxal carina. Propodeum rugose or rugulose ( Fig. 7G); with all carinae except for anterior transverse carina absent; area superomedia partly defined, about as long as maximum width; apophysis pointed and strong ( Fig. 77G); spiracle elliptic. Fore wing length 4.1–6.35 mm. Areolet as long as maximum width; width gradually narrowing anteriorly; received vein 2m-cu at near middle ( Fig. 7F). Fore wing vein 1cu-a interstitial to vein M&RS. Nervellus subvertical; intercepted near posterior end of vein. Legs covered with long setae. Hind femur densely punctate; 4.1–4.4 × as long as maximum depth in lateral view. Tarsal claws simple.

Metasoma. T I 1.9–2.15 × as long as maximum width; foveolate or longitudinally striated except for smooth base and posterior margin; latero-median carina present except for apical part; dorso-lateral carina complete but sometimes weak ( Fig. 77G). T II 0.6–0.7 × as long as maximum width. Thyridium present; close to anterior margin of T II; flat to slightly depressed; ca. 2.0 × as wide as length. Ovipositor sheath 0.95–1.05 × as long as hind tibia, 1.5–1.8 × as long as T I. Ovipositor straight; apex sharp; apex of lower valve with teeth ( Fig. 78E).

Colouration ( Figs. 7A–G). Body (excluding wings) black to blackish-brown. Setae silver except for head and mesoscutum with black setae. Subapical part of mandible tinged with reddish-brown. FL VI to FL X (or XI) with white markings. Ventral surface of apical part of flagellum usually tinged with brown. Apex of scutellum sometimes with small yellow marking. Dorsal face of fore and mid tibiae with ivory marking except for apical part. Base of hind tibia ivory. Membranous part of metasomal sternites and ovipositor yellowish-brown. Posterior margins of each metasomal tergite usually narrowly tinged with red. Thyridium reddish-brown. Wings yellowish-hyaline. Veins and pterostigma blackish-brown except for yellowish-brown to yellow wing base.

Male. No specimen available.

Distribution. Japan (Hokkaido, Honshu, Shikoku, Kyushu, and Tsushima Is.)

Bionomics. Unknown in Japan. In China, Arge pagana (Panzer, 1798) ( Hymenoptera : Argidae ) is recorded as the host ( Li et al., 2013).

Remarks. This is the first record of this species from Tsushima Island.