Neotamias siskiyou
| Siskiyou Chipmunk
(Neotamias siskiyou) | |
|---|---|
| Range | |
 | |
| Taxonomic classification | |
| Order: | Rodentia |
| Suborder: | Sciuromorpha |
| Family: | Sciuridae |
| Subfamily: | Xerinae |
| Tribe: | Tamiini |
| Genus: | Neotamias |
| Binomial details | |
| Neotamias siskiyou (A. H. Howell, 1922) | |
| Other resources | |
| Full taxonomic details at MDD | |
The Siskiyou Chipmunk (Neotamias siskiyou) is a small chipmunk with a very restricted range that includes extreme southwestern Oregon and northwestern California.
Description
From Sutton and Patterson (2000): "Grayish ochraceous color of inland specimens of the Siskiyou chipmunk contrast with the dark tawny color of coastal animals of this species. Sides of the body that are pale grayish clay color differ from the tawny sides of the body in coastal specimens. Median pale stripes are grayish white in inland specimens, contrasting with the tawny stripes of coastal animals."
Distribution notes
From Sutton and Patterson (2000): "along the Pacific coast it occurs only between the Klamath River, Del Norte County, in northwestern California and the Rogue River, Curry County, in southwestern Oregon, about 100 km N of the area referred to by Howell (1929). Chipmunks from the Van Duzen River area are now classified as [Neotamias] senex (Kain 1985; Sutton and Nadler 1977)."
Museum images
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Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909.
External measurements
Length measurements are in millimeters (mm) and weight measurements are in grams (g), unless stated otherwise. If available, the sample size (n=) is provided. If a range is not provided and n= is not given, then the listed measurement represents an average.
| Part of range | Reference | Total length | Tail length | Hindfoot length | Ear length | Mass |
|---|---|---|---|---|---|---|
| California | Jameson & Peeters (2004) | 250–268 | 98–117 | 35–38 | 16–19 | 65–85 |
| Oregon | Verts & Carraway (1998) | females: 213–276 (n=10); males: 227–260 (n=30) | females: 92–123 (n=10); males: 88–117 (n=30) | females: 31–38 (n=10); males: 27–38 (n=30) | females: 68.3–112.0 (n=10); males: 81.0–120.0 (n=30) |
Skull
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Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Dorsal view of the skull. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Ventral view of the skull. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Lateral view of the skull. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Dorsal view of the left mandible. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Outer lateral view of the left mandible. -
Holotype: USNM 161033. Neotamias siskiyou siskiyou. Adult female. Near summit of White Mountain, Siskiyou Mountains, Siskiyou County, California. Collected 16 September 1909. Inner lateral view of the right mandible.
Similar species
References
Howell AH. 1929. Revision of the American chipmunks (genera Tamias and Eutamias). North American Fauna 52.
Kain DE. 1985. The systematic status of Eutamias ochrogenys and Eutamias senex (Rodentia: Sciuridae). M.A. thesis, Humboldt State University, Arcata, California.
Nadler CE, Hoffman RS, Honacki JH, Pozin D. 1977. Chromosomal evolution in chipmunks, with special emphasis on A and B karyotypes of the subgenus Neotamias. The American Midland Naturalist 98:343-353.
Sutton DA, Patterson BD. 2000. Geographic variation of the western chipmunks Tamias senex and T. siskiyou, with two new subspecies from California. Journal of Mammalogy 81(2): 299-316.