We present to you full review of 398 species of Cryptocephalus (Chrysomelidae) of Palearctic region beetles. It includes full review and identification guide (to class of subspecies) of all representatives of one of the largest species in family of leaf beetles. There is all taxonomic information about group (including subspecies and all known synonyms) in this work. The identification guide has 918 schemes and pictures.
    In comparison with ordinary databases our software is practical tool for identification beetles due to unique algorithm with highly illustrated characteristic states. For the first time interact polihotomous and multi-entry key is provided with large quantity of textual information as well as drawings or photos and available on-line.