Reithrodontomys (Reithrodontomys) raviventris Dixon 1908

Reithrodontomys (Reithrodontomys) raviventris Dixon 1908, Proc. Biol. Soc. Wash., 21: 197.

Type Locality: USA, California, San Mateo Co., Redwood City.

Vernacular Names: Salt-marsh Harvest Mouse.

Synonyms: Reithrodontomys (Reithrodontomys) halicoetes Dixon 1909 .

Distribution: Salt marshes around San Francisco Bay, California, USA.

Conservation: U.S. ESA – Endangered; IUCN – Endangered as R. r. raviventris, Lower Risk (cd) as R. r. halicoetes .

Discussion: Subgenus Reithrodontomys, megalotis species group. Morphological and chromosomal differentiation between the subspecies raviventris and halicoetes thought to represent terminal stages of speciation (Fisler, 1965; Shellhammer, 1967). Chromosomal banding, allozymic, and DNA data reveal sister-group relationship to R. montanus (Bell et al., 2001; Hood et al., 1984; Nelson et al., 1984). See Shellhammer (1982, Mammalian Species, 169).