Chironomidae from Central Europe

This survey provides occurrence data for the Chironomidae fauna of three Central European river catchments, the Bükkösdi-víz (Hungary), the Butižnica River (Croatia), and the Velička River (Czechia). Biotic data were obtained from both qualitative and quantitative samples taken from 78 sampling sites in 2018-2019 (only Bükkösdi-víz) and 2021 (all areas). Chironomid specimens (larvae, pupae, exuviae) were morphologically identified to the possible lowest taxonomic level (mainly to species level, but also to species group, pair of species, or genus). Additionally, DNA barcoding was performed on selected specimens. The dataset contains 5,481 occurrence records representing 207 taxa. DNA sequences associated with 31 records were added from the BOLD system. Preserved specimens of selected taxa are housed in the collection of the Department of Hydrobiology, University of Pécs.