广西海岛昆虫生态地理

报道广西沿海岛屿昆虫生态地理考察结果，已定名的种类有３１９种，分别隶群于１４目８８科２３４属，磷翅目为２８．５％，鞘翅目为１９．１２％，直翅目为１６．１６％。与整岛种数多，反之较少，与是否陆联岛无关，不同岛屿昆虫种数不一样，面积大的岛种数多，反之较少，与是否陆联岛无关。不同岛屿的昆虫各类组成不一样，在涠洲岛上有５８．２％的鳞翅目种娄及５４．７％的直翅目种类出现，在龙门岛上有５０．８％的鞘翅目种类出

Insect Ecogeography in Guangxi Islands

The result of insect survey on islands in Guangxi, China is reported at first time. The registerd insects are belong to 14 orders, 88 families,234 genera, 319 species. The orders that more species have heen found are in sequence as Leoidoptera > Coleoptera > Orthoptera,making up 28.52%(butterfly 16.9%), 19.12%, 16.61%,respectively There are 72.2% butterflies and 75.0% locusts found on Weizhou island, 44.3% bugs found on Longmen(peninsula). The species in typical habitats is different. In evergreen broad leave forest and tropical seasional rain forest, 45.2% insects are Leoidoptera, 16.1% are Coleoptera; in Pinus massoniana forest, 40% are Leoidoptera,22.2% are Coleoptera, 13.3% are Holoptera, 11.1% are Orthoptera. Faunally, Oriental Palearctic species are 30%, Oriental species are 70%, among them Huanan and Huanan Huazhong element hold a dominant position. The abundance of species is obviously correlated with the size of the island,whether it is the island or peninsula.There are valuable insect, such as 116 species are natural enemy and medicinal insect and lots of butterfly are very bautiful. Since some common pest on mainland, for example Icerya purchasi,Erionota thorax, Ciaphorina citri, are not found on some islands, so it is hopeful to produce high quality seedling of banana and orange on these islands.