Karyotypes, C-bands distribution of nine species belonging to 6 genera, and chromosomal location of NORs in some species were studied. Differences in the chromosome numbers, their morphology, and the position of C-bands between species of Poecilimon and IIsophya are discussed.
E.Warchalowska-Sliwa, Department of Experimental Zoology, Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Slawkowska 17, 31-016 Krakow, Poland