Rhynchomys isarogensis Musser and Freeman 1981

Rhynchomys isarogensis Musser and Freeman 1981, J. Mammal., 62: 154.

Type Locality: Philippines, Camarines Sur Province, SE Peninsula of Luzon Isl, Mt Isarog, 5000 ft (1524 m).

Vernacular Names: Isarog Rhynchomys.

Distribution: Greater Luzon Faunal Region. Known only from Mt Isarog, Luzon, in montane forest formations from 1125 to 1750 m (Heaney et al., 1998; Rickart et al., 1991).

Conservation: IUCN – Vulnerable.

Discussion: Distributional and ecological information summarized by Heaney et al. (1999). Standard karyotype (2n = 44, FN = 52; Rickart and Musser, 1993; Rickart and Heaney, 2002) indistinguishable from those of Chrotomys silaceus (recorded as Celaenomys) and C. gonzalesi (Rickart and Heaney, 2002) .