Notes on the Pselaphinae (Coleoptera: Staphylinidae) in Shanghai, China Author Yin, Zi-Wei Author Jiang, Ri-Xin Author Chen, Zhi-Bing text Zootaxa 2017 4238 3 433 439 journal article 36335 10.11646/zootaxa.4238.3.10 dfccf4e3-e062-4da0-8dd1-f874c989fa68 1175-5326 345820 4444584A-8C17-4279-B585-57F44FDC0ACE Physomerinus pedator (Sharp, 1883) ( Figs 1 B, 3B–C, 3H–I, 4A, 4C) Material examined . China : 110 ♂♂ , 30 ♀♀ , labeled ‘ China : Shanghai , Minhang District (闵行区), 31°01'05"N , 121°27'15"E , mud bank along river, under weeds, rotten wood, sifted, 04./ 10.iv.2014 , Hu , Peng , Song & Yin leg.’ ( SNUC ) . Japan (for comparison): 1 ♂ , 1 ♀ , labeled ‘Riv. Kushidagawa, Matsunase-cho. Matsuzaka City, Mie Pref., 29.iv.2002 , Yasuko Kawakami leg.’ ; 1 ♂ , labeled ‘ TSUDA , TOKUSHIMA , 1965 ix-18 , M Sakai’ ; 1 ♂ , labeled ‘ ḞMfflāuḛẋ, Èñƌ , äẍḃ , 1997. viii.13 , 西田光康採集 ’ ; 1 ♀ , labeled ‘ Daishibashi , Ryokuchi , Tamagawa , Ota-ku , Tokyo , [ Hongshu , JAPAN ], 4.v.2007 , S. Nomura leg.’ ; 1 ♀ , labeled ‘ Japan ; Honshu , Momiya Riv., Kuji Cho , Hitachi Shi , Ibaragi Ken , 12.v.2002 , KAMEZAWA, Hiromu leg., ḚIJḆƂËƜƙflḃ, ãfifflā 口 ’ (all in NSMT ) . Distribution. Japan : Honshu, Shikoku, Kyûshû, Gotô-rettô, Yaku-shima; China : Shanghai ( new provincial record ), Zhejiang , Hainan . Comments. Physomerinus pedator ( Fig. 1 B) is characterized by the male metafemora possessing a large cavity in which a basally pedunculate and apically expanded projection is situated. The populations from Shanghai and Japan are externally similar ( Fig. 3 B–C; Nomura 1991 : fig. 133A, 133D), and their aedeagi exhibit only slight variation ( Fig. 3 H–I; Nomura 1991 : fig. 134A–B). All individuals from Shanghai were collected under weeds or in decaying woods at a mud bank along a river in April ( Fig. 4 A, 4C).