Selected, predominantly external structures of mites of the genus Pygmephorus (Acari: Heterostigmata) have been examined through light-and scanning electron microscopy. Gnathosomal complex, stigmata, solenidia, some propodosomal setae, the claw s counterpart on tibiotarsus I, and the internal thickening of the tibiotarsus were investigated and for most of them the first SEM micrographs are presented. The taxonomic importance of the structures and possible homologies are discussed.