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Sylvatic Population of Triatoma infestans from the Bolivian Chaco: from Field Collection to Characterization François Noireau; Brigitte Bastrenta; Silvia Catalá; Jean-Pierre Dujardin; Francisco Panzera; Magdalena Torres; Ruben Perez; Cleber Galvão & José Jurberg Abstract A sylvatic Triatoma infestans DM (dark morph) population detected in the Bolivian Chaco was characterized and compared with various domestic ones. The degree of differentiation of DM was clearly within the T. infestans intra-specific level. Nevertheless marked chromatic and morphometric differences as well as differences in antennal pattern, chromosome banding and randomly amplified polymorphic DNA support the hypothesis of a distinct population. Continuous exchange of insects between wild and domestic habitats seems unlikely in the Chaco. Keywords Triatoma infestans, sylvatic focus, characterization of population

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