Coccinellids are typically predators of Hemiptera such as aphids and scale insects, though larvae and eggs of their own species can also be important resources when alternative prey are scarce. As in many insects, ladybirds in temperate regions enter diapause during the winter, so they often are among the first insects to appear in the spring. Coccinellids also require a source of pollen for food and are attracted to specific types of plants. Coccinellids are sensitive to most synthetic insecticides. If food sources are limited, oviposition is reduced. A larva uses its sharp jaws to crush an aphid's body and sucks out the aphid's juices.