BesnoitiaBesnoitia is a genus of apicomplexan parasites.Life cycleThe life cycle of many of the species in this genus are not known. The life cycle may be complex with various intermediate hosts and vectors including Stomoxys and Tabanidae.Pathology and effects on the hostInfection with these parasites causes pedunculated lesions in the skin, nasal cavity and larynx of domestic animals. The lesions consist of exophytic nodules protruding from mucosal surfaces.