The Insular Vole or St. Matthew Island Vole (Microtus abbreviatus) is a species of rodent

Rodent

Rodentia is an order of mammals also known as rodents, characterised by two continuously growing incisors in the upper and lower jaws which must be kept short by gnawing....

 in the family Cricetidae

Cricetidae

The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, and New World rats and mice...

. It occurs only on St. Matthew Island

St. Matthew Island

St. Matthew Island is a remote island in the Bering Sea in Alaska, WNW of Nunivak Island. The island has a land area of , making it the 43rd largest island in the United States. Its most southerly point is Cape Upright which features cliff faces which exceed...

 and the adjacent Hall Island

Hall Island (Alaska)

Hall Island is a small island located to the northwest of St. Matthew Island in the Bering Sea in Alaska, USA. It serves as a haulout site for Pacific walrus. It is in length and has a land area of . The highest point is . Hall Island is uninhabited. It is part of the Bering Sea unit of the...

, in Alaska. On these Bering Sea

Bering Sea

The Bering Sea is a marginal sea of the Pacific Ocean. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves....

islands, Insular Voles live in damp lowland areas, on the lower slopes of mountains, and on rye grass-covered beaches. They are diurnal and eat plant matter. Birds and arctic foxes, which are the only other mammals on the island, prey on the voles.