Life cycle of the cestode Spirometra spp. required a fresh water Cyclops spp. as the first intermediate host and to amphibians, reptiles, birds or mammals as the second intermediate and paratenic hosts. While carnivores mammals serve as the definitive hosts. In this case report and for the first time in the River Nile State of Sudan, the snake Natrix tessellata was found to be the definitive host for Spirometra sp.
Keywords:Spirometra sp., Natrix tessellata, Sudan