Egg; Larva; Adult – which stage of complete metamorphosis is missing?
Xeris spectrum insects with complete metamorphosis (Endopterygota), who undergoes a metamorphosis during development. Between the larval stage and the adult stage is the chrysalis stage, a rest period, in which wasps inner and outer bodies change. The larvae's pliable and soft body is transformed into a pupa with a hard shell. When the shell is hard starting transformation from larva to the adult. The internal organs are lost in varying degrees down to a cell mass. A reorganization takes place and the animal transformed. The length of the pupa phase varies according to temperature. The entire development from egg to adult takes
Crustacean larva post-larva is characterised by the use of abdominal appendages (pleopods) for propulsion. The post-larva is usually similar to the adult form, and so many names have been erected for the stage in different groups. William Elford Leach erected the genus "Megalopa" in 1813 for a post-larval crab; a shrimp post-larva is called a "parva"; hermit crab post-larva are called "glaucothoe". In the Branchiopoda, the most basal group of crustaceans, there is no metamorphosis; instead, the animal grows through a series of moults, with each moult adding various numbers of segments to the body, but without any dramatic changes in form.