Chromosome evolution in the genus Poecilimon (Orthoptera, Tettigonioidea, Phaneropteridae)

Cytotaxonomic analysis of 20 species and subspecies of the genus Poecilimon using C-banding pattern, chiasma frequency, and morphometric characteristi cs of the chromosomes were described. Using a cladistic analysis the chromo some data provided a basis to produce a phylogenetic tree which was compare d with a tree based on morphological characters and DNA sequence data. Ther e are importent differences in the grouping of data sets to species obtaine d on the basis of morphology/DNA analyses and that based on chromosomes. Th e explanation of the differences between C-banding patterns and taxonomic p roximity is probably that the C-banding pattern changes quickly as the resu lt of the high degree of variation of constitutive heterochromatin.