List of species and the number of specimens from which at least a partial COI sequence was recovered.

Abbreviations for the countries of origin: B–Belgium, CH–Switzerland, DE–Germany, E–Spain, F–France, FIN–Finland, GB–Great Britain, GR–Greece, I–Italy, NL–The Netherlands, RUS–Russia, SE–Sweden. Singleton countries are written in full. Length of the longest COI sequence together with the number of ambiguous bases is indicated. The list follows the taxonomic order of Herting & Dely-Draskovitz [29].