Sorex pribilofensis
| Pribilof Island Shrew
(Sorex pribilofensis) | |
|---|---|
| Range | |
 | |
| Taxonomic classification | |
| Order: | Eulipotyphla |
| Suborder: | Erinaceota |
| Family: | Soricidae |
| Subfamily: | Soricinae |
| Tribe: | Soricini |
| Genus: | Sorex |
| Subgenus: | Otisorex |
| Species group: | Sorex cinereus group |
| Binomial details | |
| Sorex pribilofensis Merriam, 1895 | |
| Other resources | |
| Full taxonomic details at MDD | |
The endangered Pribilof Island shrew (Sorex pribilofensis) is endemic to St. Paul Island, Alaska.
Description
From Hall & Kelson (1959): "Tricolored (brown, pale brown, gray) in summer pelage, bicolored (brown and gray) in winter."
From Mittermeier & Wilson (2018): "The Pribilof Island Shrew is medium-sized, similar to the Barren Ground Shrew (S. ugyunak). Dorsum is grayish brown, and sides and venter are whitish or yellowish white. Tail is relatively short, narrow, and bicolored, being brown above and whitish below. Teeth are dark red. There are five unicuspids, fifth is minute, and first through fourth get slightly smaller from front to back."
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 |
|---|---|---|---|---|---|---|
| Alaska (St. Paul Island, Pribilof Islands) | Mittermeier & Wilson (2018) | head and body: 59–67 | 31–32 | 13 | 4–6 | |
| rangewide | Wilson & Ruff (editors, 1999) | 88–97 | 32–37 | unknown but probably 3–4 g |
Skull characters
From Hall & Kelson (1959): "3rd unicuspid larger than 4th; internal ridges of unicuspids well developed and heavily pigemented."
References
Hall ER, Kelson KR. 1959. The Mammals of North America. New York (USA): The Ronald Press Company.
Merriam CH. 1895-12-31. Synopsis of the American shrews of the genus Sorex. North American Fauna 10:57-125.
Mittermeier RA, Wilson DE. 2018: Soricidae. In: Handbook of the Mammals of the World – Volume 8 Insectivores, Sloths and Colugos. Barcelona: Lynx Edicions: 332-551, ISBN: 978-84-16728-08-4, DOI: http://doi.org/10.5281/zenodo.6870843