Sorex jacksoni
| Saint Lawrence Island Shrew
(Sorex jacksoni) | |
|---|---|
| Range | |
 | |
| Taxonomic classification | |
| Order: | Eulipotyphla |
| Suborder: | Erinaceota |
| Superfamily: | Soricoidea |
| Family: | Soricidae |
| Subfamily: | Soricinae |
| Tribe: | Soricini |
| Genus: | Sorex |
| Subgenus: | Otisorex |
| Species group: | Sorex cinereus group |
| Binomial details | |
| Sorex jacksoni E. R. Hall & Gilmore, 1932 | |
| Other resources | |
| Full taxonomic details at MDD | |
The Saint Lawrence Island Shrew (Sorex jacksoni) is a small, tricolored shrew known only from St. Lawrence Island, west of mainland Alaska in the Bering Sea.
Description
From Hall & Kelson (1959): "Tricolored (Clove brown, paler brown, and Smoke Gray) in summer pelage."
Museum images
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Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Dorsal view of the skin. -
Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Ventral view of the skin.
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 |
|---|---|---|---|---|---|---|
| Holotype MVZ:Mamm:51142 (Sevoonga, Saint Lawrence Island, AK) | Museum of Vertebrate Zoology | 104 | 35 | 12 | 4 |
Skull
From Hall & Kelson (1959): "3rd unicuspid equal to or larger than 4th; unicuspids without pigmented internal ridge."
-
Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Dorsal view of the skull. -
Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Ventral view of the skull. -
Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Lateral view of the skull. -
Holotype: MVZ:Mamm:51142. Sorex jacksoni. Female. Sevoonga, Saint Lawrence Island, Alaska. Collected 27 June 1931. Lateral view of the right mandible.
References
Hall ER, Gilmore RM. 1932-09-17. New mammals from St. Lawrence Island, Bering Sea, Alaska. University of California Publications in Zoology 38(9):391-404.
Hall ER, Kelson KR. 1959. The Mammals of North America. The Ronald Press Company, New York.