BACKGROUND: Triatominae are vectors of the protozoan Trypanosoma cruzi, the causative agent of Chagas disease. This study aims to report an infestation on Triatominae colonies by a beetle, previously identified as a pest. METHODS: The management of these colonies should be improved to maximize their usefulness, and factors that may cause harm to them should be avoided as much as possible. RESULTS: This is the first report on a coleopteran infestation on living Triatominae colonies worldwide. CONCLUSIONS: The present record provides an important warning to researchers who maintain insectaries in general, especially those who rear triatomines, to carry protective measures against such invasions.

Instituto Oswaldo Cruz Laboratório de Diptera Rio de Janeiro RJ Brasil

Private Entomological Laboratory and Collection Rýznerova 37 37 CZ 252 62 Únětice u Prahy Prague west Czech Republic

Universidade de São Paulo Faculdade de Saúde Pública Laboratório de Entomologia em Saúde Pública São Paulo SP Brasil

Universidade Estadual Paulista Faculdade de Ciências Farmacêuticas Araraquara SP Brasil

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