Meiotic studies in Largus rufipennis (Castelnau) (Largidae, Heteroptera). II. Reciprocal translocation heterozygosity

Specimens of Largus rufipennis (Castelnau) (Largidae, Heteroptera) from thr ee different populations from Argentina (Itaembe, Misiones Province; Tornqu ist and Ciudad Universitaria, Buenos Aires Province) were cytogenetically s tudied. Meiotic characteristics of these populations are compared with prev ious reports on the species. In the population from Itaembe, heterozygosity for a reciprocal translocation was encountered; this finding is the first report for this type of chromosome rearrangement in the order Heteroptera. The role of reciprocal translocations in karyotype evolution in organisms w ith holokinetic chromosomes is analyzed and discussed.