Aperileptus vanus Förster, 1871

Watanabe, Kyohei, 2023, Taxonomic and Zoogeographic Notes on Japanese Orthocentrinae (Hymenoptera, Ichneumonidae), with Descriptions of Four New Species, Bulletin of the Kanagawa Prefectural Museum (Natural Science) 52, pp. 7-44 : 11-13

Aperileptus vanus Förster, 1871

[New SJN: Munehida-tsuya-hae-himebachi]

( Figs. 3A–E , 22J )

Aperileptus vanus Förster, 1871: 78 .

Plectiscus (Aperileptus) obliquus Thomson, 1888: 1295 .

Diagnosis. Epicnemial carina complete ( Fig. 22J ). Malar space long, 1.7–2.0 times as long as basal width of mandible, 0.4 times as long as width of face. Nervellus reclivous ( Figs. 3A, D ). T I mat. Ovipositor sheath 0.4–0.5 times as long as fore wing, 1.2–1.4 times as long as hind tibia. Width of female face 0.45–0.5 times as wide as head. Male hind femur with a dorsolateral pit ( Fig. 3E ). Fore wing length 3.5–4.0 mm.

Materials examined. JAPAN: NARO, F, Hokkaido, Sapporo City, Jozankei , 20–29. VIII. 1989, K. Maeto & M. Sharkey leg. (MsT) ; NARO, 5 F & 1 M, ditto, 29. VIII. – 12. IX. 1989 ; NARO, 3 F & 1 M, ditto, 12–21. IX. 1989 ; NARO, 2 F, ditto, 21–28. IX. 1989 ; NARO, F, Hokkaido, Kumaishi, Kenichi-gawa, Iwafuchi-zawa , 21–29. IX. 1995, Y. Ito & T. Ito leg. (MsT) ; NARO, F, ditto, 10–20. X. 1995 ; NARO, Hokkaido, Ebetsu City, Nopporo , 29. VI. – 4. VII. 1992, K. Konishi leg. (MsT) ; EUM, F, Hokkaido, Yuni , Kuobetsu-gawa R., 2–12. VII. 2007, N. Kuhara leg. (MsT) ; EUM, F, Hokkaido. Sapporo City, Hitsujigaoka , 18–25. VI. 2003, K. Konishi leg. (MsT) ; EUM, M, ditto, 9–16. VII. 2003 ; EUM, F, ditto, 19–26. XI. 2003 ; EUM, F, ditto, 14–21. IX. 2010 ; EUM, 1 F & 1 M, Hokkaido, Bifue, Kusabue-rindo , 17. VIII. – 1. IX. 2012, N. Kuhara leg. (MsT) ; NARO, F, Hokkaido, Sapporo City, Misumai, Kannon-zawa , 7–21. IX. 1993, N. Kuhara leg. (MsT) ; NARO, F, Yamanashi Pref., Daibosatsu-toge , 16. V. 1964, T. Kikuchi leg. ; KPM-NK 81109 , F, Yamanashi Pref., Yamato Vil., Sagashio , 16. VI. 2007, K. Watanabe leg. ; KPM-NK 81110 , F, Yamanashi Pref., Enzan City., Daibosatsu, Kaminikkawa-toge , 16. VI. 2007, K. Watanabe leg. ; KPM-NK 89803 , F, Nagano Pref., Outaki Vil., Mt. Ontake-san , 25. VI. – 15. VII. 2015, S. Shimizu leg. (MsT) ; KPM-NK 89804 , F, Nagano Pref., Ueda City, Sugadaira-kogen, Tsukuba University , 19. X. – 16. XI. 2014, S. Shimizu leg. (MsT) ; KPM-NK 81111 , F, Shizuoka Pref., Kawanehoncho Town, Yamainudan , 14. VI. 2008, K. Watanabe leg. ; KPM-NK 81112 , F, Kagoshima Pref., Yakushima Is., Mt. Aiko-dake , 26. X. – 27. IX. 2006, T. Yamauchi leg. (MsT) . CHINA: F (det. Sheng), Liaoning Province, Dandong, Kuandian , 23. VI. 2007 , M-L. Sheng. Leg. RUSSIA: ZISP, F (det. by Humala), Krasnoselkup , 11. VIII. 1992, D. R. Kasparyan leg. ; ZISP, F (det. by Rossem ), “Тебердинский ЗАпов. дол.р.ТебердА”, 8. VII. 1976, D. R. Kasparyan leg.

Distribution. Japan (Hokkaido, Honshu, and Yakushima Is.); widely distributed in the Holarctic region.

Bionomics. Unknown in Japan. Solitary parasitoid of Mycetophila hetschkoi Laudrock and Exechia bicincta (Staeger) ( Mycetophilidae ) ( Humala, 2007).

Remarks. This is the first record of this species from Hokkaido, Honshu, and Yakushima Island.

Figures

Fig. 3. Aperileptus vanus Förster, 1871 (A–C: KPM-NK 81109, female; D, E: EUM, male) ― A, D: lateral habitus; B: head, frontal view; C: head, mesosoma, and metasoma, dorsal view; E: hind femur, lateral view.

Fig. 22.A, F: Apoclima brevicauda sp. nov. (A: NARO, holotype, female; F: NARO, paratype, male); B, F: Hemiphanes japonicum sp. nov. (B, E: NARO, paratype, female); C, D: H. gravator Förster, 1871 (KPM-NK 81100, female); G: H. erratum Humala, 2007 (NARO, male); H, L: Eusterinx (Holomeristus) tenuicincta (Förster, 1871) (EUM, female); I: Aperileptus albipalpus (Gravenhorst, 1829) (KPM-NK 81184, female); J: Ape. vanus Förster, 1871 (KPM-NK 81109, female); K: E. (Divinatrix) kurilensis Humala, 2004 (NARO, female); M: E. (Ischyracis) bispinosa (Strobl, 1901) (EUM, female) ― A–C: head, dorsal view; D: head, posterodorsal view; E: head, frontal view; F: flagellum, lateral view; G: flagellum, ventral view; H: mesoscutum and scutellum, dorsal view; I, J: mesopleuron, lateral view; K: T I–T IV, dorsal view; L: area superomedia of propodeum; M: propodeum, lateral view.