Ladybugs are well-known for their voracious appetites for such agricultural pests as aphids and scale insects; 2 in fact, they are commercially available for just this purpose? Interestingly, ladybugs have few natural enemies, a fact suggested by the bright coloration of many ladybug species; this" aposematic coloration" warns potential predators of the existence of a chemical defense~ ystem.~ When from their joints which repulses ants, ...
