海南岛尖峰岭林区昆虫区系研究

A STUDY ON THE INSECT FAUNA OF JIANFENGLING FOREST REGIONS IN HAINAN ISLAND

经三年的采集调查,我们获得该林区昆虫20目4000余种,以鳞翅目种类最多,鞘翅目和双翅目次之,余下的17目为数很少。虫口数量以小种群特多,大种群特少为其特征。文中对蝗科、蝽科、蓟马和蛾类等昆虫在四种森林植被类型中的分布作了比较,并列举出海南地方特有种5种。有关热带林虫的特点,也作了初步归纳。

This inverstigation, as a part of the plant and animal survey in the project on tropical forest ecosystem in Jianfenling mountain, Hainan Island, was conducted in 1981—1983. About 4000 insects have been collected, of which the Lepidoptera accounts for 50％ and the Coleoptera and Diptera accounts for 13％ and 11％ respectively. The rest belongs to the other 17 orders. Take 26 families of moths for an example, the species of Noctuidae, Geometridae and Pyralidae are the dominant families, which accounts for 69％ of the total collected moths. One character in population quantity is large in small population and small in large population. There are 17 dominant species, among which 10 species are in pyralidae, 4 species in Hypsidae, 2 species in Arctiidae and 1 species in Uraniidae. Most sp les of Acrdiidae and Pentatomidae have been found in tropical semidecidous monsoon forest and most species of Thrips and Moths in tropical mountainous rain forest. According to the composition of fauna, most species of Thripidae, Phlothripidae, Pentatomidae and Sphingidae are distributed in Oriental region. Some species local species in Hainan Island obtained are Antillothrips flavicornis Zhang, Dinothrips hainanensis Zhang, Agaeus tessellatus Dallas, Dabessus albovittatus Hsiao et Cheng and Rhagastis mongoliana pallicosta Mell. It may be concluded that the charateristics of tropical forest insects are abundant in species, less quantity for each species, more than one generation and no dormancy but diapause for widespread species.