New data on wolf spiders (Araneae: Lycosidae) from Laos Author Omelko, Mikhail M. text Raffles Bulletin of Zoology 2024 2024-08-12 72 235 251 journal article 10.26107/RBZ-2024-0020 2345-7600 14683140 4CE93702-0F79-43A8-8876-1FE76944C010 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 ).