CASEBEARER MOTHS (LEPIDOPTERA, COLEOPHORIDAE) OF ISLANDS OF THE PETER THE GREAT GULF

For the first time, 18 species from 8 genera of casebearer moths are reported from three islands of the Peter the Great Gulf (Askold, Rikord and Furugelm). The most diverse fauna was found on Furugelm Island (15 species from 7 genera), a smaller number of species were recorded on Askold Island (8 species from 6 genera) and only 4 species from 4 genera were found on Rikord Island. All species reported from the islands are known from the mainland of Primorskii Krai, of them two species (Multicoloria conspicuella and Casignetella argentula) are common to the faunas of studied islands. The species with Transeurasian and East Asian types of ranges is dominated in island fauna of casebearer moths, which account for 44% and 39%, respectively. The larvae of the island species are characterised by narrow trophic specialisation, being narrow (8 species, 50%) and broad (5 species, 31%) oligophages. Most species of island casebearers are inhabitants of meadow biotopes and their larvae are hortophages.