Stomoxys calcitrans

The ubiquitous stable fly, about house fly size, and a pest wherever horses are. It is a blood-sucker and transmits a number of trypanosomes including Trypanosoma evansi (Surra), T. equinum (Mal de Caderas), T. brucei and T. vivax (Nagana of cattle) and is an intermediate host for Habronema majus. It is probably also involved in the transmission of Dermatophilus congolensis (mycotic dermatitis).