The beetle larva has four instar stages. Beetles develop through four stages&colon; egg, larva, pupa and adult. The pupa is the stage between the larva and adult stages. The mosquito life cycle consists of egg, larva, pupa, and adult stages. The silkworm is the larva or caterpillar of a silk moth. Goedart had documented species by depicting one adult, a pupa and one larva. Their life cycle is broken down into 4 stages&colon; embryo, larva, pupa, adult. The wasp larva feeds on the subdued living cockroach. Eggs take 3 to 8 days to develop and hatch into larva or caterpillars. This is known to attract lacewings whose larva eat aphids. The egg hatches into a white, legless larva. The metabolic change is thought to preserve nutrients for the wasp larva. Eggs may contain a developing embryo or a fully developed pinworm larva. Trombiculid mites go through a lifecycle of egg, larva, nymph, and adult. Overwintering occurs as a mature larva within an earth-coated cocoon.