General review of the tick species which parasitize sheep and goats world-wide.

The paper lists the genera and species of ticks which occur world-wide in sheep and goats. The list is based on records documented in scientific ticks collections. Most ticks belong to Haemaphysalis, Rhipicephalus and Hyalomma genera which include many species with unclear taxonomic status and which are rather difficult to identify. The review points out that present knowledge on ticks which parasitize sheep and goats world-wide is still fragmentary.