Order Trichoptera Kirby, 1813 - caddisflies
   Suborder Annulipalpia A.V. Martynov, 1924 - retreat-making caddisflies
     Superfamily Hydropsychoidea J. Curtis, 1835
       1 Family Dipseudopsidae G. Ulmer, 1904
       2 Family Ecnomidae G. Ulmer, 1903
       3 Family Hydropsychidae J. Curtis, 1835
       3.0 Family Arctopsychidae A.V. Martynov, 1924 see Subfamily Arctopsychinae A.V. Martynov, 1924
       4 Family Polycentropodidae G. Ulmer, 1903
       5 Family Psychomyiidae F. Walker, 1852
       6 Family Xiphocentronidae H.H. Ross, 1949