Haematopinus is a genus of insects in the superfamily Anoplura, the sucking lice. It is the only genus in the family Haematopinidae, known commonly as the ungulate lice. All known species are of importance in veterinary medicine. These lice are some of the most economically important ectoparasites of domestic animals. Species infest many domesticated and wild large mammals, including cattle, horses, donkeys, swine, water buffalo, African buffalo, antelope, zebra, deer, and camels. The species has great importance in the water buffalo breading, since this louse is specific to buffaloes, being the main ectoparasite of the species, with important sanitary and economic burden. The Haematopinus tuberculatus is suspected to be involved in the transmission of diseases, such as anaplasmosis. The