Hapalomys longicaudatus Blyth 1859

Hapalomys longicaudatus Blyth 1859, J. Asiat. Soc. Bengal, 28: 296.

Type Locality: Burma, Tenasserim, Sitang River Valley.

Vernacular Names: Greater Marmoset Rat.

Distribution: SW China (W Yunnan; Wang, 2003), SE Burma (Ellerman, 1961), SW and peninsular Thailand (J. T. Marshall, Jr., 1977 a; Robinson et al., 1995), and Malay Peninsula (Medway, 1978; specimens in USNM); limits unknown.

Conservation: IUCN – Lower Risk (nt).

Discussion: Karyotype uninformative about phylogenetic relationships (Yong et al., 1982). Spermatozoal morphology similar to that of Chiropodomys and Maxomys and also resembling the basic structure found in species of Mus and Apodemus (Breed and Yong (1986). Reviewed by Musser (1972). Evolutionary history of H. longicaudatus extends back to middle Pleistocene as documented by isolated molars recovered from cave sediments in peninsular and NW Thailand (Chaimanee, 1998).