Palaearctic
adj. 古北区的(包括欧洲、亚洲北部、阿拉伯北部以及非洲的撒哈拉以北部分)
n. 古北区
例句
They are mainly distributed in the palaearctic, nearctic, oriental, ethiopian region.
他们主要分布在古北区、东洋区、新北区和非洲区。
Distribution in north America, Palaearctic, India and the north-west Himalayas mountain.
分布在北美,古北界,印度和西北。
Conclusion The Calyptratae fauna in Pangquangou Nature Reserve of Shanxi province was mostly palaearctic.
结论山西省庞泉沟自然保护区有瓣蝇类的区系特征是以古北界区系成分为主。