Arotes sugiharai Uchida, 1934

Ito, Masato, Watanabe, Kyohei & Maeto, Kaoru, 2014, Revision of the genus Arotes Gravenhorst (Hymenoptera: Ichneumonidae: Acaenitinae) from Japan, Zootaxa 3893 (2), pp. 196-208 : 206-207

Arotes sugiharai Uchida, 1934

( Figs 3 , 6 , 9 , 12 )

Arotes sugiharai Uchida, 1934: 46 . [Type locality: Japan, Kochi Pref., Mt. Kajigamori] Arotes sugiharai: Iwata, 1958: 68 ; Katayama et al., 2010: 150.

Female (n=11). Body length: 11.0–14.0 mm.

Head. Clypeus 0.5–0.8 times as long as wide. Face 0.7 times as long as wide, strongly punctate and weakly convex. MSL 0.8–1.0 times as long as BWM. Lower tooth of mandible longer than upper tooth ( Fig. 3 ). OOL/OD= 1.6–2.0. POL/OD= 1.4–2.0. Antenna with 32–35 flagellomeres; first flagellomere 1.1–1.4 times as long as second flagellomere.

Mesosoma. Lateral area of pronotum densely punctate and longitudinally striate. Lateral part of collar punctate. Subalar prominence sparsely punctate. Metapleuron extensively punctate ( Fig. 6 ). Fore wing: length 10.5–13.0 mm with vein rs-m cross-vein opposite or slightly distad of vein 2 m-cu ( Fig. 12 ). Hind femur 3.3–3.5 times as long as maximum depth in lateral view, with distinct convexity ventrally ( Fig. 9 ). Hind tibia 11.4–14.0 times as long as maximum depth in lateral view. Hind first tarsomere 2.5–3.0 times as long as second hind tarsomere and 3.2–4.3 times as long as longer hind tibial spur.

Metasoma. T1 2.2–2.5 times as long as maximum width, 2.3–2.6 times as long as T2. T2 0.6–0.7 times as long as maximum width. T1 and T2 sparsely punctate. Other tergites punctate. Ovipositor sheath 1.9–2.0 times as long as hind tibia.

Coloration. Body color black. Antennal flagellum without white band. Face black except for clypeus. Clypeus, trochanter, trochantellus light yellow. Front and middle legs with yellowish brown. Fore wing with two discrete dark marks ( Fig. 12 ).

Male (n=3). Similar to female. Antenna with 32–35 flagellomeres. Hind femur 4.1–4.4 times as long as maximum depth in lateral view. Hind tibia 14.2–15.0 times as long as maximum depth. Hind first tarsomere 2.0–2.3 times as long as second hind tarsomere. T1 2.8–3.3 times as long as maximum width, 2.4–2.5 times as long as T2. T2 0.8 times as long as maximum width. Face, clypeus, hind tarsus light yellow. Apex of antenna tinged brown.

Male terminalia of A. sugiharai was not observed due to limited number of specimens.

Specimens examined. Japan: 1F (holotype of Arotes sugiharai ), Mt. Kajigamori, Kochi Pref., 14. June 1931, Y. Sugihara (SEHU); 1M, Nanakurasawa-Yumata, Omachi-shi, Nagano Pref., 4. July 1982, S. Yoshimatsu (NIAES); 1F, Yorii, Saitama Pref., 26. May 1985, T. Nambu (NIAES); 1F, Maruno-cho, Nisasaki-shi, Yamanashi Pref., 20. July-1. August 2007, K. Hosoda (Malaise trap) (OMNH); 1F, Tochitani-rindo, Fujino-cho, Kanagawa Pref., 8. June 2008, K. Watanabe (KPMNH); 1F, Nishitanzawa, Kanagawa Pref., 2. July 1994, K. Kudo (NIAES); 1F, Hinokiboramaru, Kanagawa Pref., 25. June 2005, H. Miyatani (NIAES); 1F, Nabedaira-kogen, Takayama City, Gifu Pref., 13. August 2013, M. Ito (SEHU) [Asug2]; 1F, Noka-dani, Ooi Town, Fukui Pref., 8. July 2013, S. Fujie (SEHU) [Asug1]; 1F, Nakagurusu, Tsushima-shi, Nagasaki Pref., 5. June 2004, R. Matsumoto, (OMNH); 1M, Ohkubo, Tsushima-shi, Nagasaki Pref., 5. June 1996, Y. Okushima (OMNH); 1M, Shiratake, Tsushima-shi, Nagasaki Pref., 6. June 1996, Y. Okushima (OMNH); 1F, Mt. Kuro-dake, Oita Pref., 10. July 1982, K. Konishi (NIAES); 1F, Takachiho-gawara, Kagoshima Pref., 7. April 1975, Y. Minami (KU).

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

Remarks. The males of this species are described for the first time. This species can easily be distinguished from other Arotes species by the fore wing with two discrete dark markings and an entirely yellow clypeus.

Figures

FIGURES 1 – 3. Head, frontal view. 1, A. japonicus sp. nov., female (holotype); 2, A. moiwanus, female (Hokkaido); 3, A. sugiharai, female (Nagasaki Pref.).

FIGURES 4 – 6. Metapleuron, propodeum and 1 st metasomal segment, lateral view. 4, A. japonicus sp. nov., female (holotype); 5, A. moiwanus, female (Hokkaido); 6, A. sugiharai, female (Nagasaki Pref.).

FIGURES 7 – 9. Anterior aspect of hind leg. 7, A. japonicus sp. nov., female (holotype); 8, A. moiwanus, female (Hokkaido); 9, A. sugiharai, female (Nagasaki Pref.).

FIGURES 10 – 12. Wings. 10, A. japonicus sp. nov., female (paratype, Kumamoto Pref.); 11, A. moiwanus, female (Yamanashi Pref.); 12, A. sugiharai, female (Yamanashi Pref.).