In this study an ultra violet analysis, which is a spectrophotometric method, was applied for the first time as a structural analysis of the group. The following species were collected from Karamık Lake in Afyon Province, Turkey between April and August, 2015, Hydryphantes flexiosus, Hydrodroma despiciens, Georgella helvatica, Eylais infundibulifera, Hygrobates nigromacutlatus and Torrenticola brevirostris. These species were separately analyzed by Ultraviolet Spectrophotometer (US) and the results assessed using graphical readings. The affiliations between the species were read from the graphical curves of each species and then compared in terms of the curves.