Figure 1. Small holes from redheaded flea beetle feeding. This week, redheaded flea beetles have been observed in corn. Although these defoliators are removing leaf tissue, it is not at levels that warrant treatment (Figure 1).Redheaded flea beetles will often strip only a layer of the leaves off corn, which results in windowpane holes. The bigger issue with redheaded flea beetles is that they will also feed on corn silks.