中国肉食螨亚科属间系统发育的支序分析

Cladistics and Phylogeny of Genera Relationships Within the Subfamily Cheyletinae in China

本文选用31个形态学特征及1个生物学特征为依据,对肉食螨亚科23属进行了支序分析,探讨国内已知肉食螨亚科属间系统发育关系。支序分析将肉食螨属归为一个独立单元,随后,其余各属被分为两个分支,其中一支由贝氏螨属、暴螯螨属、扎扇毛螨属、螯钳螨属、螯梳螨属和螯螨属构成。支序分析较好的解决了肉食螨亚科内的姐妹群关系,共形成9个稳定的姐妹群关系,其中(平单梳螨(单梳螨属+新单梳螨属))、(前螯螨属(螯颊螨属+真颊螨属))、(贝氏螨属+螯钳螨属)三组姐妹群关系较好的支持了Volgin肉食螨亚科分族系统。

The cladistic analysis of 23 genera in the subfamily Cheyletinae was made using 31 morphological characters and 1 biological character,and the phylogenetic relationships of them were then discussed.The cladogram suggested that the genus Cheyletus formed an independent clade and then the inner group was divided into two clades,one of which was consist of 6 genera（Bak,Cheletonella,Zachvatkiniola,Chelacheles,Chelacaropsis,Cheletacarus）.The sister groups in the subfamily Cheyletinae were well established.Nine sister groups were strongly suggested,three of which： Prosocheyla（Eutogenes＋Cheletogenes）,（Bak＋Chelacheles）,Neoacaropsis（Acaropsellina＋Acaropsella） supported the tribe system of Cheyletinae established by Volgin.