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nearctic adj.【動、植】新北區〔包括北美洲寒帶及格陵蘭〕的。

nearly

Up to the present 239 species of the genus have been known from the world . they are mainly distributed in the palaearctic , nearctic , oriental , ethiopian region 迄今為止,該屬全世界共記載239種,為世界性分布,但主要分布于古北區、東洋區、新北區和非洲區。