Hyalomma anatolicum anatolicum (Koch, 1844) as a possible vector for transmission of Trypanosoma theileri, Laveran, 1902 in cattle.

Amastigotes, sphaeromastigotes, epimastigotes and trypomastigotes of Trypanosoma theileri, Laveran, 1902 have been observed in the nymphs and adults of Hyalomma anatolicum anatolicum (Koch, 1844). There ticks were obtained from engorged larvae and nymphs collected from a cross-bred bull with detectable parasitaemia. Infection with T. theileri was established in two 6-8-month old cross-bred calves by subcutaneous inoculation of Trypanosomatid flagellates collected from ticks and by feeding of the infected ticks on the ears of these calves.