Karyotype and sex chromosome differentiation in two species (Coleoptera, Tenebrionidae).

Cytogenetic features of Nabozhenko & Keskin, 2010 and Küster, 1850 were analysed using conventional and differential staining. Mitotic and meiotic chromosomal analysis revealed the diploid number as 2n = 20 (9+Xy) in both species. Besides the general resemblance of two Mulsant, 1854 karyotypes, important differences related to variations in the number of metacentric/submetacentric chromosomes, localization of highly impregnated regions which are considered as NOR and heterochromatin distribution are clearly observed.