A. Adult Colorado potato beetle (Leptinotarsa decemlineata Say). B. Mature
larvae of Colorado potato beetle. C. Field experiment at the Montcalm Research
Farm, Entrican, Michigan, comparing Bt-cry3A (left) and susceptible
(right) potato lines under natural beetle pressure (approximately 75 days after
planting) D. Defoliation of susceptible potato line by insecticide-resistant Colorado
potato beetles at Long Island Horticultural Research and Extension Center,
Riverhead, New York (approximately 50 days after planting). E. Predation
of Colorado potato beetle larvae in an unsprayed field study comparing various
host plant resistant lines of potato at the Montcalm Research Farm, Entrican,
Michigan.