Abstract: Objective:To survey Gamasid mites and Trombiculid mites in Yichang,Hubei province.Methods:To collect the samples of Gamasid mites and Trombiculid mites,to analyze and confirm the delimitation of zoogeographical regions of the Gamasid mites and Trombiculid mites fauna.Results:Among the 17 genera and 34 species of Gamasid mites listed,11 species(or 33.3%) belonged to the species entirely or mainly distributed in the oriental region,13 species(or 39.4%) to those entirely or mainly distributed in the palaearctic region,and the 8 species(or 27.3%) to those distributed in both regions.Among the 10 genera and 34 species of Trombiculid mites listed,27 species were entirely or mainly distrubuted in the oriental region,2 species(or 5.9%) entirely or mainly in the palaearctic region,and 5 species(or 14.7%) were found in both regions.Conclusion:It is considered that the delimitation of zoogeographical region in Yichang is included in the oriental region.

摘要： 目的:调查宜昌市革螨和恙螨及其区系成分。方法:收集革螨及恙螨种类并作出区系的界定。结果:已发现革螨17属33种,其中东洋界种类11种,占33.3%;古北界种类13种,占39.4%;广布两界种类8种,占27.3%。恙螨10属34种,其中东洋界种类27种,占79.4%;古北界种类2种,占5.9%;广布两界者5种,占14.7%。结论:宜昌市革螨及恙螨区系应划归东洋界。

关键词: 革螨, 恙螨, 区系, 东洋界, 古北界