Systemic insecticides are commonly used at planting where Mexican bean beetle is a frequent pest. In 1972, Maryland, then other states, began releasing "Pediobius foveolatus" to control Mexican bean beetle. The Mexican bean beetle is likely native to the southern plateau region of Mexico. The broad bean beetle, "B. rufimanus" is univoltine. The bean beetle, "Callosobruchus maculatus", oviposit their eggs on the cowpea bean.