New species and an image key to the wingless Cryptorhynchinae of the Caucasus (Coleoptera: Curculionidae: Tylodina)a hypothesis on the spread of forest and open land species in the Western Palaearctic.

Three new species from the Caucasus, Caucasusacalles subglobosus Stben sp. nov., Caucasusacalles circularis Stben sp. nov. and Acalles krasnodarensis Stben sp. nov., are described from the Cuacasus (Georgia, Armenia and Russia) and are distinguished…

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