Which insects are known to undergo incomplete metamorphosis?

Incomplete metamorphosis is a type of development seen in certain insects where the young stages (nymphs) resemble smaller adults and do not undergo a distinct larval stage. Instead, these nymphs gradually develop into the adult form through a series of molts, becoming increasingly similar to the mature insect with each stage.

Silverfish are part of the order Thysanura and exhibit this type of development. They hatch from eggs looking like smaller versions of adults and undergo several molts as they grow, eventually reaching maturity without the larval stage characteristic of complete metamorphosis.

On the other hand, butterflies and bees undergo complete metamorphosis, which includes distinct egg, larval (caterpillar or grub), pupal (chrysalis or cocoon), and adult stages. Beetles, too, follow this process, transitioning from eggs to larvae (grubs) to pupae before finally becoming adults. Silverfish, with their gradual development into adults, illustrate the concept of incomplete metamorphosis effectively.