Out of 195 Camelus dromedarius examined only 19 were infected (9.7 %) with this parasite. The life cycle of T. sp. involves many morphologically distinct stages-more than described for any other genus in the Trypanosomatidae. This parasite was appeared for the first time in Camelus dromedarius at Assiut, Egypt. Most of stages of T. dromedarius (n.sp.) which were appeared in the blood of Camelus dromedarius are amastigotes stages. At the same time spheromastigots, epimastigote stages and trypomastigote stages with two shapes slender and broad. In experimental infection, the trypanosome was found to be transmissible to laboratory white mice, also metacyclic and amstigote formes were seen.