Abstract
Triatoma sordida is one of the main species with vectorial competence for the transmission of Chagas' disease in Brazil. Several studies indicate polymorphism in T. sordida, which led to the suggestion of the phenomenon of cryptic speciation in this species. Cytogenetic studies with C-Banding and Fluorescent In Situ Hybridization (FISH) demonstrated the presence of three cytotypes, possib…