内蒙古蝗总科Acridoidea昆虫的研究

A Study on the Acridoidea(Orthoptera)of the Inner Mongolia Autonomous Region,China

本文报道了内蒙古蝗虫51属、134种,隶属7个科.将内蒙古划分为3个蝗虫分布区——森林草原区、干湿草原区和荒漠草原区,并对各分布区的蝗虫种类特点及环境之间的关系进行了初步的讨论,从而得出了森林草原区蝗虫应起源于欧洲—西伯利亚区系,荒漠草原区蝗虫应起源于中亚细亚区系、干湿草原区蝗虫应属欧洲—西伯利亚区系、中亚细亚区系以及中国—喜马拉雅区系的过渡之结论.

This paper deals with the faunal characteristics of the Acridoidea andits regional distribution in the Inner Mongolia Autonomous Region,especially,therelation between the distribution of Acridoidea and environment.The disussionis based on 103 spceies of Acridoidea in Inner Mongolia which I have collectedand seen,in which includs 90 palaearctic species(87.38%),13 widely-distributedspecies(12.62%).However,the endemic species has a large ratio of the palaearcticspecies(33.33%).In addition,31 species of Acridoidea which have been recorded bythe other authors,but have not been seen by me are listed in the catalogue.The Inner Mongolia Autonomous Region is situated in middle-eastern Asia.at 37°30'～53°30'N and 97°10'～126°04',with an area of 1.18 million km^2.From theviewpoint of Zoogeography,Inner Mongolia should belong to the Palaearctic Region,so the palaearctic species are absolutely dominant.Because the environment and di-stribution of Acridoidea in Inner Mongolia are distinct difference,Inner Mongoliac an be subdivided into three distrtibution regions:1)Forest-steppe region,5 Cha-racteristics are discussed.In this region,the wings of many species are atrophied,but tegmina developed(except the species of Zubovskia and Primna),most of allbelong to family Arcypteridae,these species are good at songs,so thatthe tegmina may be more important in song than in flying,this is theresult thah these species live in the tall weeds for a long time.2)Desert-steppe region,3charateristics are discussed,in this region,desert species are do-minant.3)Dry-damp steppe region,3 characteristics are discussed.These chsaracter-istics reflect the adaption of Acridoidea to the environment.According to thecomponent of Acridoidea in the three regions,Forest-steppe region should belongto the Europe-Siberia origin;Desert-steppe region should belong to Middle-Asia origin and Dry-damp steppe region should be transition area among Europe-Siberia species,Meddle-Asia species and China-Himalaya species.