A survey for ticks on livestock with emphasis on ticks parasitizing cattle was conducted below 16N lat. in Mali. Seventeen species of ixodid ticks were recovered from cattle, 12 from sheep, five from goat, four from horse, one from donkey and four from camel.
Amblyomma variegatum(F.), Boophilus geigyiAeschlimann & Morel, Hyalomma marginatum rufipesKoch and H. truncatumKoch were widespread, and could each be collected as adults from cattle throughout the year in certain regions. A. variegatumwas most numerous from the tropical woodlands to the Sahelo-Sudanian steppe. The prevalence of B. geigyi in Mali confirms an extended distribution of this species in West Africa. B. annulatus(Say) and B. decoloratus(Koch) were prevalent in the inland delta area and in south-western Mali. H. m. rufipesand H. truncatumwere most numerous in the Sudanian and Sahelo-Sudanian steppe. H. dromedariiKoch, H. impeltatumSchulze & Schlottke and H. impressumKoch were collected in the steppeland areas. H. nitidumSchulze was collected for the first time in Mali. This comparatively more hydrophilic species was prevalent in the North Guinean forest and Sudano-Guinean vegetation zones. Of eight Rhipicephalusspecies from livestock, seven were collected from cattle: R. cuspidatusNeumann, R. evertsi evertsiNeumann, R. guilhoniMorel & Vassiliades, R. muhsamaeMorel & Vassiliades, R. sanguineus(Latreille), R. senegalensisKoch and R. lunulatusNeumann. R. sulcatusNeumann was obtained only from sheep. The distribution and phytoclimatic associations of these species are discussed.