|Scientific Name:||Tamias quadrimaculatus|
|Species Authority:||Gray, 1867|
Neotamias quadrimaculatus Gray, 1867
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor/s:||Linzey, A.V. & NatureServe (Hammerson, G.)|
|Reviewer/s:||Amori, G. (Small Nonvolant Mammal Red List Authority) & Chanson, J. (Global Mammal Assessment Team)|
Listed as Least Concern because its extent of occurrence is larger than 20,000 km², it is common, there are no major threats, and its populations are not declining.
|Range Description:||This species occurs in the Sierra Nevada of east-central California (Plumas to Mariposa and Madera counties); and central and adjacent west-central Nevada in the vicinity of Lake Tahoe in the United States (Hoffmann et al., in Wilson and Reeder 1993; Clawson et al. 1994). It occurs at elevations of 960-2,250 m asl.|
Native:United States (California, Nevada)
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species is considered common in suitable habitat. Reported densities in the Sierra Nevadas ranged from 0.2/ha in April to 1.0/ha in June.|
|Habitat and Ecology:||
It inhabits chaparral, brushfields, open areas in coniferous forests (e.g., ponderosa pine, Douglas-fir, mixed coniferous); occurs among brush, rocks, and logs. Basically terrestrial but sometimes climbs trees. Nests have been found under buildings and in tree hollows.
Mating begins in late April and the first half of May. Gestation lasts about 31 days and young are born from May to July but mainly in the first half of June. Litter size is 2-6. Young are almost fully grown by early September (see Clawson et al. 1994).
Primary foods are various seeds and fruits (especially those of conifers) and hypogeous fungi; also eats some arthropods. Gleans seeds from tree squirrel "leftovers." This species stores food. Known to be active above ground from late March to mid-November.
|Major Threat(s):||This species has a restricted range but there are no major threats at present.|
|Conservation Actions:||This species is not known to occur in any protected areas.|
Clawson, R. G., Clawson, J. A. and Best, T. L. 1994. Tamias quadrimaculatus. Mammalian Species 469: 1-6.
Hoffmann, R. S., Anderson, C. G., Thorington Jr., R. W. and Heaney, L. R. 1993. Family Sciuridae. In: D. Wilson and D. M. Reeder (eds), Mammal Species of the World, a Taxonomic and Geographic Reference, pp. 419-465. Smithsonian Institution Press, Washington, DC, USA.
Wilson, D. E. and Ruff, S. 1999. The Smithsonian Book of North American Mammals. Smithsonian Institution Press, Washington, DC, USA.
|Citation:||Linzey, A.V. & NatureServe (Hammerson, G.) 2008. Tamias quadrimaculatus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 20 May 2013.|
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