Apodemus peninsulae (Thomas, 1907) —Korean Field Mouse Micromys speciosus peninsulae Thomas, 1906 [1907] p.862; Type locality- Mungyeong, Korea; Kuroda, 1938 p.63. Apodemus peninsulae: Miller, 1914 p.89; Kishida & Mori, 1931 p.378; Corbet, 1978 p.136; Han, 1994 p.47; Won & Smith, 1999 p.27; Han, 2004c p.127. A. praetor Miller, 1914 p.89; Type locality- Upper Songhua (Sungari) River, Manchuria. A. specious peninsulae: Allen, 1927 p.2; Kuroda, 1938 p.62; Tate, 1947 p.282; Won, 1958 p.447; Won, 1967 p.222; Won, 1968 p.185. A. flavicollis: Ellerman & Morrison-Scott, 1951 p.565. A. flavicollis peninsulae: Ellerman & Morrison-Scott, 1951 p.566. A. sylvaticus: Ellerman & Morrison-Scott, 1951 p.568. A. sylvaticus draco: Ellerman & Morrison-Scott, 1951 p.571; Won, 1958 p.447. A. peninsulae peninsulae: Jones & Johnson, 1965 p.387; Yoon, 1992 p.81. A. specious: Won, 1968 p.184. Range: The Korean field mouse commonly occurs throughout Korea, except in remote islands (Fig. 128). Remarks: Due to morphological differences such as the number of mammae, skull, and teeth, Jones (1956) promoted peninsulae to a distinct species. The presence of three region-specific mtDNA types of ancient divergence likely resulted from the regions of Primorye, Siberia and the Korean Peninsula functioning as refugia for A. peninsulae during a substantial period of the Quaternary glacial ages (Serizawa et al. 2002). According to a phylogenetic study based on cytochrome b, the Korean population is closer to populations from Shandong and Ningxia, China than from those of the Russian Far East (Sakka et al. 2010). A numerical taxonomy and genetic study suggests the occurrence of two subspecies (A. p. peninsulae and A. p. sowerbyi) in Korea (Heo 2002).

Published as part of Jo, Yeong-Seok, Baccus, John T. & Koprowski, John L., 2018, Mammals of Korea: a review of their taxonomy, distribution and conservation status, pp. 1-216 in Zootaxa 4522 (1) on pages 188-189, DOI: 10.11646/zootaxa.4522.1.1, http://zenodo.org/record/2610198