A new species of Rhinonyssidae (Mesostigmata) nasal mite (Ptilonyssus simplex n. sp.) from the Bohemian waxwing in Denmark.

A new species of nasal mite, Ptilonyssus simplex n. sp. is described and illustrated based on material from Bohemian waxwing, Bombycilla garrulus (Linnaeus, 1758) (Bombycillidae). The bird host was collected in a residental area in Hirtshals, Denmark, in October 2022. A set of diagnostic characters is presented in order to differentiate the new species from the overall similar species Ptilonyssus bombycillae Pence, 1973 which has been recorded from Bombycilla spp. in Europe and Northern America.