The dna - based identification of ecologically important hydropsychids larvae was primarily studied . the role of co i gene and its fragments on phylogenetic reconstruction of four lepidostomatids were discussed . larvae of all reared species and goera ramose were described for the first time except for apsilochorema hwangi 具钧竖毛螯石蛾成虫、蛹与幼虫间的核酸歧异度均为1 ，而具钩竖毛螯石蛾成虫、蛹、幼虫与黄氏竖毛螯石蛾成虫间的核酸歧异度为13 。
