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1. Tick found in the ear canal of mammals, mainly cattle. Body covered with short spines .......... Otobius megnini 2. Tick found in the cracks & crevices of roosts, nests & burrows. ........ Go to: 3 & 4
3. Anterior rounded. Body's lateral margin "sharp" and distinct .......... Argas sp. 4. Anterior pointed. Body's lateral margin rounded and NOT distinct .......... Ornithodorus sp.