Analysis on the fauna composition of Orthoptera in Helan Mountain National Nature Reserve,Inner Mongolia
In this study,through the survey and statistical analysis of Orthoptera insects in Helan Mountain National Nature Reserve of Inner Mongolia,we had compiled a total of 101 species of Orthoptera in 12 families and 44 genera.Among them,Oedipodidae,Arcypteridae,Gomphoceridae,Acrididae and Pamphagidae were the most abundant.But the Rhaphidophoridae,Gryllidae and Gryllotalpidae were rare.After analysis,it was found that Orthoptera in Helan Mountain National Nature Reserve of Inner Mongolia was a typical distribution type of Palaearctic,and there were 44 species unique to Palaearctic,accounting for 43.57%of the species number,which indicates that the climatic environment,geomorphology,and vegetation type of the area were suitable for the survival of different species of Orthoptera.In the zoogeographical division of China,the largest share of distribution type was found in Mengxin District+North China,with a total of 38 species,accounting for 37.62%;the total number of species in Mengxin District was 21,accounting for 20.80%;and the total number of species in Mengxin District+North China+Qingzang District was 8,accounting for 7.92%.
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