Abstract
The variegated grasshopper, Zonocerus variegatus, is widespread in western and central Africa. It is primarily associated with the forest regions, but extends into the savannah, where it is restricted to riverine habitats (85). It has been known as a minor pest for many years, attacking plantation crops such as coffee, pineapple, and banana as well as a wide range of subsistence crops, notably cassava (9, 20, I IS); but the incidence and scale of outbreaks have increased in the last 20 years, leading to renewed interest in developing appropriate control strategies. Z. variegatus belongs to the family Pyrgomorphidae and, like some other members of the family (102), it is aposematically colored, sequesters toxic chemicals from plants, and commonly lives in dense groups. This group behavior, together with its polyphagous habit, contributes to its status as a pest.
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