AbstractKaryotype variation within the genusGlyphinain Europe is described and correlated with morphological differences.G.pseudoschrankianasp.nov., onBetula pubescensin Europe and Japan, is separated formG.schrankianaBörner, onAlnusspp. in northern and central Europe, on the basis of differences in karyotype and morphology.G.jacutensisMordvilko is synonymized withG.schrankiana.A key is provided to palaearctic members of the genus