宁夏金龟子昆虫的区系组成和分布特征

Fauna Composition and Distribution Characters of Chafer Beetles in Ningxia

宁夏已知有金龟子昆虫9科36属55种,以此作为研究对象讨论了该类昆虫在宁夏的区系组成和分布特点。在区系特征上,蒙新区成分有47种(占85.4%),华北成分有42种(占76.3%),青藏成分有18种(占32.7%),东北成分有37种(占67.3%),西南和华南成分分别为17种(各占30.9%),华中成分20种(占36.4%)。结果表明,宁夏金龟子在区系组成上以蒙新区、华北区为主,东北区略次之。在区域地理分布上,六盘山区34种(占61.8%),荒漠半荒漠区有38种(占69.1%),黄土高原区有27种(占49.1%)。

There are 9 families 36 genera 55 species chafer beetles of Scarabaeoidea in Ningxia, which were reported and taken as materials to discuss the fauna composition and areal distribution. On fauna characters： 47 species were defined as Mongolia-Xinjiang member （85.4%）, 42 species were North China member （76.3%）, 18 apeeies were Qinghai -Xizang member （32.7%）, 37 specie were Northeast China member （67.3%） and 17 species （30.9%） were Southwest China and South China member respectively and 20 species were Middle China member （36.4%）. The results indicated that the chafer beetles in Ningxia owned dominance as member of Mongolia-Xinjiang Region and North China Region in faunal composition ; the next is member of Northeast China Region. As for the distribution of regional geography, the Liupan Mountain Region： total 34 species （61.8%） ; the desert and semi-dssert region： total 38 species （69.1%） ; the Loess Plateau Region： total 27 species （49.1%）.