Abstract
A trap is described that uses cucurbitacins and carbaryl to capture and kill northern and western corn rootworm beetles ( Diahrotica barberi Smith and Lawrence and D. virgifera virgifera LeConte, respectively). The trap is consistent in numbers of beetles captured per trap per day, and it should be useful in integrated pest management programs that monitor the population density of corn rootworm beetles in cornfields. Captures in 1981, 1982, and 1983 in Illinois showed that western corn rootworm adults that disperse into first-year cornfields were predominantly females.
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