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 。
2.
For c . violaceum , it is moderate treatment that all the corresponding parameters have the maximal value . but it still was maximal for leaf biomass , lar , ramose number of stem , stem biomass and umbrella number of flower . and the rgr of drought treatment in january exceeded the saturation treatment largely , but the difference among treatments was small in april 川明参与明党参和峨参相应的生长参数基本以中度水分条件下最大，但叶生物量、 lar 、葶分枝数、葶生物量和花伞数仍以饱和水分条件下最大；而1月份干旱条件下的rgr远高于其他两种水分条件， 4月份则相差很小。
