Zapus hudsonius (Zimmermann, 1780). Geogr. Gesch. Mensch. Vierf. Thiere, 2:358.

TYPE LOCALITY: Canada, Ontario, Hudson Bay, Fort Severn (see Anderson, 1942b).

DISTRIBUTION: USA and Canada: S Alaska to S Coast Hudson Bay to Labrador, south to E North Carolina and NW South Carolina, southwest to NW Alabama, north to NE Mississippi and Tennessee, west to NE Oklahoma, northwest to SE Montana, northeast to SE Saskatchewan, northwest to C and S British Columbia. Isolated populations in S Wyoming, NC Colorado, N and C New Mexico, and EC Arizona.

STATUS: IUCN - Endangered as Z. h. luteus.

SYNONYMS: acadicus, alascensis, americanus, australis, brevipes, campestris, canadensis, hardyi, labradorius, intermedius, ladas, luteus, microcephalus, ontarioensis, pallidus, preblei, rafinesquei, tenellus (see Hall, 1981).

COMMENTS: The S Rocky Mtn subspecies luteus, formerly assigned to princeps, was shown to represent hudsonius by Hafner et al. (1981). Diagnosis, records and range map (excluding Mississippi), provided by Hall (1981). Mississippi record given by Kennedy et al. (1982). Reviewed by Whitaker (1972, Mammalian Species, 11).