Myotis petax Hollister, 1912 —Eastern Water Bat

Myotis petax Hollister, 1912 p.6; Type locality- Altai district, Siberia, Russia.

M. daubentonii ussuriensis Ognev, 1927 p.146; Type locality- Vladivostok, Russia; Kishida & Mori, 1931 p.378; Kuroda, 1938 p.96; Ellerman & Morrison-Scott, 1951 p.147; Won, 1958 p.454; Won, 1967 p.312; Won, 1968 p.84; Yoon, 1992 p.38; Yoon, 2010 p.40.

M. daubentonii: Tate, 1947 p.84; Won, 1968 p.84; Corbet, 1978 p.50; Han, 1994 p.45; Won & Smith, 1999 p.12; Son, 2001 p.96; Yoon, 2004 p.61; Yoon, 2010 p.40; Jo et al., 2012 p.251.

Range: Myotis petax is a common bat over the Korean Peninsula and Jeju Island (Yoon 2010; Fig. 26).

Remarks: Myotis daubentonii ussuriensis has been used to designate the Korean population (Yoon 2010). A combined approach based on molecular, morphological and ecological data identified two distinct species in M. daubentonii, 1) a western group (west of Omsk, Russia) Myotis daubentoniid, and 2) an eastern group (east of Omsk) M. petax, described by Hollister in 1912 from the Republic of Altai in the south of western Siberia (Kruskop 2004; Matveev et al. 2005). Mitochondrial (ND1 gene) analysis had M. petax clustered with M. ikonnikovi, M. mystacinus, and M. aurascens, whereas, M. daubentonii clustered with M. nattereri, M. bombinus, M. chinensis, M. schaubi, and M. escalerari (Datzmann et al. 2012) . Combined mitochondrial cytochrome b and nuclear Rag 2 analyses together with craniodental morphology identified M. petax closer to M. macrodactylus and M. daubentonii closer to M. frater (Ruedi et al. 2013, 2015). Therefore, M. petax is the proper name for this species in Korea.