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The two species of New World flying squirrels, genus ''Glaucomys'', are the only species of flying squirrel found in North America.〔Walker EP, Paradiso JL. 1975. Mammals of the world. Baltimore: Johns Hopkins University Press.〕〔Forsyth A. 1999. Mammals of North America: Temperate and Arctic regions. Willowdale: Firefly Books.〕 They are distributed from Alaska to Honduras. They are similar in many ways to the Eurasian flying squirrels in the genus ''Pteromys''. The two species of New World flying squirrels can be easily distinguished on the basis of size and ventral pelage. Northern flying squirrels, ''Glaucomys sabrinus'' are larger and have belly hair that is dark at the base and white at the tip. Southern flying squirrels, ''Glaucomys volans'', are smaller and have belly hairs that are completely white. ==Species== *Genus ''Glaucomys'' * *''Glaucomys volans'' – Southern Flying Squirrel * *''Glaucomys sabrinus'' – Northern Flying Squirrel 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「New World flying squirrel」の詳細全文を読む スポンサード リンク
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