Infestation by Haematopinus quadripertusus on cattle in São Domingos do Capim, state of Pará, Brazil.

Severe infestation with lice was observed on crossbred cattle (Bos taurus indicus ×Bos taurus taurus) in the municipality of São Domingos do Capim, state of Pará, Brazil. Sixty-five animals were inspected and the lice were manually collected, preserved in 70% alcohol and taken to the Animal Parasitology Laboratory, School of Veterinary Medicine, Federal University of Pará, Brazil, for identification. The adult lice were identified as Haematopinus quadripertusus, and all the cattle examined were infested by at least one development stage of this ectoparasite.