Beetles develop through four stages&colon; egg, larva, pupa and adult. Once fully matured, the larva develops into a pupa. The mosquito life cycle consists of egg, larva, pupa, and adult stages. Fleas go through four life cycle stages of egg, larva, pupa, and imago (adult). The life cycle of this insect has four stages&colon; fertilized egg, larva, pupa, and adult. The four stages are egg, larva, pupa, and adult. Blue bottle flies have the complete cycle of egg, larva, pupa, and adult. Their life cycle is broken down into 4 stages&colon; embryo, larva, pupa, adult. These stages include&colon; egg, larva, pupa, and adult. Goedart had documented species by depicting one adult, a pupa and one larva. These are the egg, larva, pupa, and adult. The pupa or chrysalis, unlike that of moths, is not wrapped in a cocoon. A butterfly pupa, called a chrysalis, has a hard skin, usually with no cocoon. The postembryonic development consists of four larval stages (instars) and one pupa. The species overwinters as a pupa.