Arctosa C. L. Koch 1847

Arctosa C. L. Koch, 1847 Type species. Aranea cinerea Fabricius, 1777, from France. Comments. Arctosa C.L. Koch, 1847, with 168 species and two subspecies (WSC, 2024), is one of the largest genera of Lycosidae. It is a poorly defined and undoubtedly polyphyletic genus (Wang et al., 2012). Arctosa has an almost worldwide distribution, although it does not occur in Australia. The genus is relatively well studied in Europe (Lugetti & Tongiorgi, 1965; Almquist, 2005), the Nearctic (Dondale & Redner, 1983; Paquin & Dupérré, 2003), Japan (Tanaka, 2009) and Korea (Namkung, 2003). Almost one-fifth (32) of all named Arctosa species occur in China (WSC, 2024). Chinese species have not been revised, and data regarding their taxonomy and distribution is scattered throughout numerous different papers (Song et al., 1999; Yin et al., 2012; Wang et al., 2012, 2021; Zhang et al., 2022, etc.). The diversity of Arctosa in Southeast Asia was poorly studied until recently. Currently, five species of this genus are known from this region: Arctosa tanakai Barrion & Litsinger, 1995 (Philippines), A. delaportei, A. depectinata, A. kiangsiensis, and A. springiosa (Laos) (Barrion & Litsinger, 1995, Omelko & Marusik, 2022).