“…We detected an extensive polymorphism of C-heterochromatin in natural populations of Triatoma infestans and Triatoma sordida . In the latter species, the chromosome differences led to the revalidation of Triatoma garciabesi, subsequently confirmed by isoenzymatic (Noireau et al, 1998) and morphometric ( Jurberg et al, 1998) markers. However, in T. brasiliensis, we could not detect any cytogenetic differences among specimens with distinct color patterns.…”