In this paper, the composition and characters of the Hemiptera fauna in the Ningxia Yunwu Mountain were studied. A total of 38 species of Hemiptera insects belonging to 11 genera in 32 families were reported. The family Aphidida is the predominant group (10 genera and 11 species). The family Pentatomidae (7 genera and 9 species) and the family Coreidae(3 genera and 3 species) is the next. Analysis on the world zoogeographic fauna, oriental-palaearctic species(for 63.16%) were the main composition. In the zoogeographic regions of China, the widely distributed species, the Inner-Mongolia Xinjiang and Northeast and North China region species and the Inner-Mongolia Xinjiang and Qingzang species was 23.68%, 13.16% and 10.53%, respectively.%根据云雾山国家级自然保护区半翅目昆虫名录进行区系分析，保护区共有半翅目昆虫11科32属38种，其中蚜科（Aphidida）是优势科，共10属11种，其次是蝽科（Pentatomidae）7属9种和缘蝽科（Coreidae）3属3种.在世界动物地理区系组成上，宁夏云雾山的半翅目昆虫以“古北区+东洋区”为主，占63.16%；在中国动物地理区系中，以全国广布型比例最高，占23.68%，“东北区+华北区+蒙新区”跨区分布型次之，占13.16%，“华北区+蒙新区+青藏区”跨区分布型占10.53%.
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