<unk>  is a species of excavate trypanosome in the genus Trypanosoma that causes one form of surra in animals. It has been proposed that T.<unk>  is—like T. equiperdum—a derivative of T. brucei. Due to this loss of part of the mitochondrial (kinetoplast) DNA T.<unk>  is not capable of infecting the invertebrate vector and establishing the subsequent life-stages. Due to its mechanical transmission T.<unk>  is not restricted to transmission via the tsetse fly but shows a very broad vector specificity including the genera Tabanus, Stomoxys, Haematopota, Chrysops and Lyperosia. It rarely causes disease in humans, indeed, it has only been recorded in cases where the patient lacks a normal component of human serum, Apolipoprotein L1. T.<unk>  is very common in India and Iran and causes acute disease in camels and horses, and chronic disease in cattle and buffalo. In Pakistan, it has been found to be the most prevalent trypanosome species in donkeys. Haemoglobin plays a role in trypanolytic host defense against T.<unk> .
Trypanosoma evansi
Trypanosoma brucei
Entamoeba moshkovskii
Echinostoma revolutum
Trypanosoma cruzi
Schistosoma mekongi
Leishmania braziliensis
Schistosoma malayensis