Relatively mild winters, with fewer subfreezing temperature unit accumulations, have been correlated with increased survival of overwintered bean leaf beetle, Ceratoma trifurcata, populations in the Midwest in recent years (UW Soybean Plant Health, 2004; Lam and Pedigo, 2001). Bean leaf beetle adults emerging in the spring feed on wild and cultivated legumes, moving to early planted soybeans where they continue to feed and then deposit eggs of the first generation. While direct damage caused by early season defoliation (overwintered population) and pod feeding (second generation) can occur, beetle population density must be quite high to cause economic yield loss and treatment thresholds are available to suppress populations below damaging levels (Boerboom et al., 2005).