异色瓢虫与隐斑瓢虫的区别及其色斑型和横脊的频率-应用昆虫学报.PDF

昆虫知识 Chinese Bulletin of Entomology 20 10 ，47 (3 ):568 ～ 575 异色瓢虫与隐斑瓢虫的区别及其色斑型和 横脊的频率* 虞国跃 ( 100097 ) 北京市农林科学院植物保护环境保护研究所 北京 Identification of Harmonia axy ridis and H . y edoensis with notes on the former ′ s color pattern and elytral ridge occurrence. YU Guo-Yue (Institute of Plant ＆ Environmental Protection ，Beij ing A cademy of Agricultural ＆ Forestry Sciences ，Beijing 100097 ，China) Abstract The two ladybird beetles ，Harmonia axyridis (Pallas)and H . yedoensis (Takizawa ) (Coleoptera : Coccinellidae)are sibling ，often sympatric ，species found in China (from Beijing in the north to northern part of Guangdong in the south ，to eastern Xizang and southern Gansu in the west)，Japan (south of Hokkaido)and Korea. These insects occur simultaneously on some plants ，most frequently on pine trees. H . yedoensis had long been regarded as a synonym of H . axyridis ，including recently by Koch (2003 ). Because adults of these two forms are difficult to distinguish in the field ，there is potential to make wrong explanation for the variation of elytral color pattern ，ridge occurrence and the microevolution in H . axyridis. This paper describes the color pattern and elytral ridge of H . axyridis in parts of North China lacking H . yedoensis. The axyridis form is very rare in the eastern part of China (from North China to north Guangdong in the south ，to Gansu and Yunnan in the west)but is common in northwest Xinjiang . The frequency of elytral ridges ranges from 98 . 85 % in North China (Jiamushi City ，Helongjiang Province)to 78 . 26 % in West China (Dali City ，Yun