Microtus fortis Büchner, 1889 —Reed Vole

Microtus fortis Büchner, 1889 p.99; Type locality- Huang He (the Yellow River) valley, Ordos desert, Nei Mongol, China; Ellerman & Morrison-Scott, 1951 p.701; Jones & Johnson, 1965 p.376; Won, 1968 p.211; Corbet, 1978 p.114; Han, 1994 p.47; Won & Smith, 1999 p.26; Han, 2004c p.135.

M. pelliceus Thomas, 1911b p.383; Type locality- Ussuri River, southeastern Siberia; Kuroda, 1938 p.54.

M. fortis pelliceus: Allen, 1940 p.860; Ellerman & Morrison-Scott, 1951 p.702; Won, 1958 p.445; Jones & Johnson, 1965 p.376; Won, 1967 p.190; Won, 1968 p.212.

M. fortis uliginosus Jones and Johnson, 1955 p.193; Type locality- Jipo-ri (Chip’o-ri; 38° 08’ N, 127° 19’ E), Cheolwon, Korea; Jones & Johnson, 1965 p.376.

Range: The reed vole occupies wetland habitats in central and extreme northeastern Korea (Kim et al. 2015) and western islands (including Dadohaesang National Marine Park) close to the peninsula (Han 2004c; Fig. 120).

Remarks: Microtus fortis consists of a species group including M. sachalinensis, M. hyperboreus and M. gromovi (Haring et al. 2011) . Both morphological and genetic divergence estimates were close to levels observed among sibling species (Haring et al. 2011; Lissovsky & Obolenskaya 2011). Microtus f. pelliceus Thomas, 1911 occurs in northern Korea, while central and southern populations are generally considered a distinct Subspecies, M. f. uliginosus Jones and Johnson, 1955 (Won 1967; Won & Smith 1999).