Wing formation is an energy-intensive process, and the generation of a female adult that closely resembles the larval form and lacks wings does occur on occasion. This is referred to as neoteny or juvenilization. On the other hand, at the larval stage, certain insects have highly distinct-looking instar shapes. Hypermetamorphic insects of the Strepsiptera groups show these extra alterations throughout the regular full metamorphosis process.  Examples of Neotonic Insects are the female trilobite beetle or bagworm moth. Various parasitic wasp, beetle, fly, and mantis-fly are examples of Hyper Metamorphic Insects.The four phases of full metamorphosis are experienced by all neotenic insects. The earliest stages of parasitic instars are exceedingly mobile and tiny in comparison to non-hyper metamorphic insects, making it much simpler for them to locate hosts.