Abstract
In order to elucidate the phylogenetic relationships of genus Bryodemella (s. str.) and answer such question as whether B. (s. str.) is a monophyletic genus, all species of this genus were dealt with and a cladistic analysis was performed using thirty-four characters from external morphology in this paper. The result yielded only one most parsimonious tree of 55 steps, both consistency index and retention index of 0.80, indicating that the B. (s. str.) is a monophyletic genus. The phylogenetic relationships among species of B. (s. str.) can be denoted as: [B. (s. str.) diamesum, B. (s. str.) xizangensis] [[B. (s. str.) gansuensis [B. (s. str.) xinjiangensis, B. (s. str.) elegans]] [B. (s. str.) nigrifemura [B. (s. str.) holdereri, B. (s. str.) tuberculatum]]]. All type specimens are deposited in the Museum of Hebei University, Baoding, China.References
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