During the spring and summer, they feed on aphids and some scale insects and are extremely beneficial for both agricultural and horticultural crops. During its lifetime a single ladybug may consume as many as 5,000 aphids. Ladybugs may be red, white, yellow, pink, orange or black. There are 450 species in the U.S. and 5,000 worldwide.
Adult females lay their eggs in the vicinity of aphid colonies. The larvae that hatch from the eggs are spiny and black with bright spots. Although they look dangerous, the larvae are quite harmless to humans. And the larvae also eat aphids--even more than the adults. After two to four weeks the larva attaches itself to a leaf, its skin splits and the pupa emerges. The pupa then metamorphosis into the adult ladybug.
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