The ticks of Zimbabwe. VII. The genus Amblyomma.
It was found from examination of samples taken in the Zimbabwe National Tick Survey Collection that the most commonly occurring and economically important species of Amblyomma is A. hebraeum, which in the adult stage is parasitic on cattle and other medium-to-large ungulates, leopards and ostriches, and in the immature stages on ungulates, carnivores and tortoises. Its distribution is unstable. In 1975-76 it occurred only in a few areas in southern Zimbabwe, but it spread rapidly after dipping was disrupted in the communal lands during the pre-independence war. By 1980, it was present throughout most of the southern half of the country and had become established at some places in the north. Of secondary importance is A. variegatum, which occurs in north-western Zimbabwe and in the Burma Valley on the eastern border, and is found most commonly on cattle and buffalo (Syncerus caffer). Also present in Zimbabwe are A. tholloni, A. sparsum, A. rhinocerotis, A. marmoreum and A. nuttalli, which are specific parasites of wild hosts and seldom if ever occur on domestic animals.