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A total of 781 species of Microlepidoptera belonging to 41 families are reported for the territory of Omsk Region. The most numerous is the Tortricidae family represented by 255 species, then Crambidae (94 species), Gelechiidae (70), Pyralidae (66), Pterophoridae (44), Depressariidae (32), Gracillariidae (29), Tineidae (25), Elachistidae (14), Adelidae and Elachistidae (8 species in each family), Yponomeutidae, Ypsolophidae, Ethmiidae and Cosmopterigidae (7 species in each family), Scythrididae and Oecophoridae (6 species in each family), Eriocraniidae (4), Nepticulidae, Momphidae and Epermeniidae (3 species in each family), Prodoxidae, Glyphipterigidae, Lyonetiidae and Choreutidae (2 species in each family), Opostegidae, Incurvariidae, Roeslerstammiidae, Argyresthiidae, Plutelliidae, Acrolepiidae, Bedelliidae, Parametriotidae, Chimabachidae, Cryptolechiidae, Batrachedridae, Blastobasidae, Autostichidae, Galacticidae (1 species in each family). 10 species are new to the Omsk Region. Agonopterix purpurea (Haworth, 1811) and Aethes flagellana (Duponchel, 1836) are reported from the territory of Omsk Region as new to the Asian Part of Russia; Fomoria weaveri (Stainton, 1855) reported from the territory of West Siberia for the first time.

The second сommunication on the Microlepidoptera fauna of Omsk Region of Russia includes information about 115 species. Most part of them is new to the regional fauna. The list includes 14 species recorded from the Asian part of Russia for the first time, among them Opostega salaciella (Treitschke, 1833), Myrmecozela ochraceella (Tengström, 1848), Bucculatrix ulmella Zeller, 1848, Euhyponomeutoides ribesiellus (Joannis, 1900), Glyphipterix equitella (Scopoli, 1763), Mendesia farinella (Thunberg, 1794), Elachista humilis Zeller, 1850, Elachista littoricola Le Marchand, 1938, Elachista pollutella Duponchel, 1843, Elachista pullicomella Zeller, 1839, Biselachista albidella (Nylander, 1848), Scythris flavilaterella (Fuchs, 1886), Pyroderces argyrogrammos (Zeller, 1847), Epermenia iniquella (Wocke, 1867).