云南医学革螨数值分类研究

目的以云南省57种医学革螨作为分类单元，以形态特征为主列出60项分类性状特征来探讨云南省医学革螨不同属和种的亲缘关系。方法运用SPSS11．5统计软件中的系统聚类分析。对57种医学革螨进行数值分类。结果赫刺螨属和棘刺螨属单独从厉螨科中分离出来，其余种类的分类结果与传统的分类结果一致。结论数值分类能比较客观地反映医学革螨各分类阶元的分类地位与亲缘关系．分类结果与传统形态分类结果基本一致。

Classification of A Medically Important Group of Gamasid Mites by Numerical Taxonomy in Yunnan, China

Objective To determine the taxonomic position of medically important gamasid mites and to compare numerical taxonomy with the traditional systematics in the classification of gamasid mites. Methods Based on hierarchical cluster analysis, numerical taxonomy was applied to study fifty-seven species of medically important gamasid mites. Results The results of cluster analysis based on squared euclidean distance showed that Hirstionyssus Fonseca and Echinonyssus Hirst should be separated from Laelapidae Berlese and formed an independent family. The taxonomic position of the remaining species remains the same as those in the traditional systematics. Conclusion Numerical taxonomy can objectively reflect the taxonomic position of the medically important gamasid mites. The result of classification by numerical taxonomy is consistent with traditional systematics for gamasid mites.