The karyological knowledge of the Carpathian newtT. mpntandonihas been improved by the study of the mitotic chromosomes banded by the C-banding method and the analysis of the ovarian giant lampbrush chromosomes. The karyotype appears very similar, although not overlapping to that of the allied speciesT. vulgaris, as it results also from the analysis of hybrid complements. A modification of the content of the three species groups or Artenkreise including the European newts appears necessary, also on the basis of recent hybridological investigations.