They feed on aphids by piercing their bodies and sucking the fluids, leaving shriveled, blackened aphid bodies. They may also feed on scales and caterpillars. This ladybird beetle is an important predator of European red mite in parts of northeastern United States, particularly Pennsylvania. It has been observed intermittently in the Hudson Valley of New York, and occasionally in western New York. Eggs are laid mostly on the undersides of leaves near the primary veins, at a density of one to ten per leaf.
Eggs turn black just prior to hatching.
The pupa is uniformly black, small and flattened, and is attached to the leaf. Other Ladybird Beetles. Ladybird beetles are very efficient predators of aphids, scales, and mites. They overwinter in sheltered places and become active in the spring. Females may lay hundreds of eggs.