广西十万大山昆虫区系考察初报

对广西南部十万大山中部山区昆虫考察，已定名昆虫有１２目１０４科２９１属３８８种，以鳞翅目、鞘翅目、半翅目和直翅目的种类居多，分别占１９．３３％、１８．３０％、１７．０１％和１７．０１％。种类较多的科有斑腿蝗科２８种，蝽科２５种，缘蝽科１９种，猎蝽科、蜻科、铁甲科和凤蝶科各１２种，斑翅蝗科１０种。各林带采集到的昆虫种类占总采集量的百分率分别为：山顶矮林带（海拔８５０ｍ以上）约占８．４％；常绿阔叶林带

Insect Faunal Analysis of Mt.Shiwandashan in Guangxi

A survey of insects in the middle of Shiwandashan mountain of south Guangxi was done.The results show that the insects registered belong to 12 orders, 104 families, 291 genera, 388 species.The orders that morespecies had been found were leoidoptera, coleoptera, Hemiptera and Orthoptera,and making up 19.33%, 8.30%, 17.01% and 17.01%, respecfively. The families that more species had been found were catantopidae (28 species), Pentatomomorpha (25 species), Coreidae (19speies), Reduviidae (12 species), Libellulidae (12 species), Hispinae (12 species), Papilionoidea swallowtai (12 species). The percentages of species colleected in each forert zone to total collections were:mountain top dwarf forest (higher than 850m above sea level) 8.4%; evergreen board leave forest (700~850 m), 4 orders, 12%, second tropical seasional rain forest (Valley.lower than 700m) 17orders, 48.8%; Pinus massoniana forest (230~400 m) 14 oders, 13.7%; economic forest (150~300 m elevation) 10 orders, 14.6%. Water area species were considerably rich, Paunally, Oriental species were 79.69%, among them Malaya Philippines element was 39.9%, China-Burma element 60.1%;Oriental-palearctic species 18.01%, world-wide species only 2.3%. Insect spedes and number tended to decrease with the increase of elevation but no apparently change in fauna struccture, oriental species held a dominant position.