Rattus enganus Miller 1906

Rattus enganus Miller 1906, Proc. U. S. Natl. Mus ., 30: 821.

Type Locality: Indonesia, Pulau Enggano (southwest of Sumatra and off the continental margin).

Vernacular Names: Enggano Island Rat.

Distribution: Known only from Pulau Enggano.

Conservation: IUCN – Critically Endangered.

Discussion: Rattus species group unresolved. Represented only by the holotype. Some cranial, dental, and external features resemble those in R. macleari from Christmas Isl and R. xanthurus from Sulawesi, but the holotype of R. enganus is morphologically distinctive; determining its phylogenetic affinities within Rattus will require more specimens from Pulau Enggano and revisionary study of the genus (Musser and Newcomb, 1983). In addition to R. enganus and R. adustus, there is a single specimen of R. tiomanicus (USNM 140975) collected on Pulau Enggano.