Abstract
Abstract Phoretic mites can be predators of eggs and larvae of bark beetles. Phoretic mites associated with Ips duplicatus have not been systematically studied so far. Therefore, we studied the spectrum and abundance of phoretic mites associated with this species in the eastern part of the Czech Republic. Beetles were sampled with pheromone traps. In total, 500 beettle individuals were captured. From their bodies and the sediment of collecting bottles, 292 mite individuals were collected, and three species of phoretic mites (Mesostigmata) were identified. The most numerous species was Dendrolaelaps quadrisetus. This mite species as well as the other identified species Uroobovella ipidis were not known as phoretic on I. duplicatus before. The second most numerous species was Trichouropoda polytricha known from galleries of I. duplicatus. Total abundance and the number of phoretic mites per beetle as well as the species spectrum significantly differed between localities. The values of abundance and species spectrum were similar to I. typographus
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