Parasites of domestic and wild animals in South Africa. Xlll. The seasonal incidence of adult ticks (Acarina: Ixodidae) on cattle in the northern Transvaal

The arthropod parasite burdens of 14 Cape mountain zebra (Equus zebra zebra), shot,for survey purposes in the Mountain Zebra National Park in the eastern Cape Province, were determined. Three species of Gasterophi-lus larvae and 9 ixodid tick species were recovered. Larvae of Gasterophilus pecorum were the most numerous of the fly larvae recovered and Margaropus winthemi was the most abundant tick. Two horses examined in the park were infested with 3 species of Gasterophilus larvae and 7 species of ixodid ticks