Abstract
This study reports the results of a survey carried out in the Ucka Nature Park in the northeastern part of Croatia. It reports for the first time a list of species belonging to the family Phytoseiidae from Croatia, as until now, only one species was known from this country. Seventeen species are reported, one of them being new to science. This species belongs to the genus Typhlodromus subgenus Typhlodromus in the subfamily Typhlodrominae: Typhlodromus (Typhlodromus) octogenipilus.