Adults of the genusCrassichelesKarg (Acari: Mesostigmata)

The adults and deutonymphs of Crassicheles greeni sp. nov. and C. holsaticus Willm. (Acari: Mesostigmata) are described. S. greeni is reported on staphylinid beetle from England and C. holsaticus from sphaerocerid flies and staphylinid beetles collected in Ireland and England.