We have analysed the blood feeding sources of 94 triatomine bugs (51 T. brasiliensis, 42 T. pseudomaculata and one R. neglectus) from Fazenda Aroeira, in Catolé do Rocha Municipality, Paraíba State, and four neighbouring localities. The positivity for marsupial, man and bird blood were, respectively, 39.7, 6.2 and 23.0%. Three insects from Fazenda Aroeira were positive both forT. cruzi and marsupial blood while only one of the three was positive for another mammal. Marsupials are the most important source of T. cruzi for the insects of the area, which have litte contact with man.
Triatominae; Blood feeding source; Semiarid; Chagas' disease; Northeastern Brazil