宁夏医学蚤、蜱、螨、虱的区系分布

Ningxia Medical Entomology&Acari(Fleas,Ticks,Mites,lice)andTheir Geographical Distribution

对宁夏医学蚤、蜱、螨、虱的地理区系分布进行了研究，迄至晚近，已累计得到２３９种（亚种），隶属４目２９科９８属，其中蚤类７科３７属８２种；蜱类２科５属９种；革螨１２科４０属１２０种；恙螨２科９属１２种；吸虱６科７属１６种。根据中国动物地理区划，宁夏属南北两个２级区──亚区，两亚区地理环境不同，动物、医学昆虫（蜱螨）的地理区系各具代表性；部分种群相互重叠地分布于两亚区；有４５种医学昆虫（蜱螨）分别为两亚区所特有。

species of medical insects &acari in Ningxia Hui Autonomous Region have beenalready recorded,belonging to 4orders,29 families,and 98 genera. Fleas:7 families,37 genera and 82species;ticks:2 families,5 genera and 9 species;Gamasid mites:12 families,40 genera and 120species; Chigger mites:2 families,9 genera and 12species;Suck lice:6 families,7 genera and 16species. According to the zoogeographical distribu-tion of Chins,Ningxia belongs fo two second classregions(subregions),North Region&South Region,each subregion has its own geographical environ-ment.And·the final as well as the geographicaldistribution of medical insects/acari all show their u-nique,representative characteristics; nevertheless,part of the population within these two subregionsstill overlaps with each other in their distribution.Itis also noted that,45 medical insects/acari speciesare original in these two subregions.