– The karyotypes of eight species of Geotrupidae are reported and illustrated. Ceratophyus hoffmannseggi Fairmaire has seven pairs of autosomes and sex chromosomes which are Xy (!), XX ("), while Anoplotrupes stercorosus (Scriba), Geotrupes spiniger Marsham, Sericotrupes niger (Marsham), Thorectes geminatus (Gené), T. intermedius (Costa), T. lusitanicus (Jekel) and Trypocopris vernalis (L.) all...