Aridelus rufotestaceus Tobias, 1986

Fig. 5A-I

Aridelus rufotestaceus Tobias, 1986: 229 (English translation: 399); Chen and van Achterberg 1997: 18; Shaw et al. 2001: 132. [Type locality: Russia]

Aridelus rufiventris Luo & Chen, 1994: 483; Chen and van Achterberg 1997:18. Syn. nov. [Type locality: China]

Material.

Russia 1♀, holotype, Lazarevskoe, Sochi, forest along rivulet, 14.IX.1981, V. Tobias leg. (ZISP) . Japan Honshû: 1♂, Shizuoka Pref., Shizuoka City, Shimizu Ward, Muramatsu, collected as a host adult of Glaucias subpunctatus on 14.XII.2018, recognized a cocoon on 23.I.2019, and emerged on 8.II.2019, K. Itoyama & A. Tsunashima leg. (OMNH) ; 1♂, Toyama Pref., Toyama City, Arimine, Inonedani, 1120 m alt., 15-22.IX.2009, MsT., M. Watanabe et al. leg. (KPMNH) ; 1♀, Mie Pref., Taiki Town, Nishiki, 9-21.X.2007, MsT., M. Nakaseko leg. (MUNJ) ; 1♂, Kyôto Pref., Yawata City, Morigaito, left bank of Kidu River, 17.VI.2018, S. Fujie leg. (OMNH) ; 1♀, Nara Pref., Uda City, Haibarahagihara, Torimiyama-kôen, about 585 m alt., 20.VIII.2018, R. Itô leg. (OMNH). Hachijôjima Is. : 2♂♂, Eigo, 2.VI.1964, Y, Hirashima & M. Shiga leg. (NARO). Kyûshû: 1♂, Kumamoto Pref., Izumi Vil., Gokanosô, 1.VIII.1981, H. Kurokawa leg. (OMNH). Yakushima Is. : 1♀, Kankake, 25.VIII-28.IX.2007, MsT., T. Yamauchi leg. (KPMNH); Mt. Aiko, 8-28.VI.2007, MsT., T. Yamauchi leg. (KPMNH) ; 1♀, same data except 29.VII-25.VIII.2007. (KPMNH); 1♀, same data except 28.IX-2.XI.2007. (KPMNH) . Korea 1♂, Kyongsangpuk-do, Mt. Sudo, 700 m alt., 9-12.VII.1971, K. Yamagishi leg. (MUNJ) .

Distribution.

Japan ( Honshû: Shizuoka, Toyama, Mie and Kyôto Prefecture; Hachijôjima Is.; Kyûshû: Kumamoto Prefecture; Yakushima Is.); China, Georgia, Korea, Italy, Russian Far East (Yu et al. 2016; Lee et al. 2017). New to Japan.

Hosts.

Glaucias subpunctatus (Walker, 1867) (a new record) and Nezara viridula (Linnaeus, 1758) (Shaw et al. 2001) (both Pentatomidae).

Remarks.

Chen and van Achterberg (1997) indicated the differences between A. rufiventris Luo & Chen and A. rufotestaceus Tobias from only one specimen of each taxon in the sculpture of the vertex, the condition of vein m-cu of the fore wing, the relative length of vein 1r-m of the hind wing, and the colour of the mesosoma, as shown in Suppl. material 1: Table S1. However, these characters could not separate the Japanese specimens into the two species (Suppl. material 1: Table S1). These are most likely intraspecific variations. Hence, A. rufiventris is considered a junior synonym of A. rufotestaceus .