Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


complete metamorphosis

Black swallowtail, collage of metamorphosis, 3 stages - Papilio polyxenes - male Horned Passalus life stages - Odontotaenius disjunctus Hypermetamorphosis of Striped Blister Beetle - Epicauta vittata
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
No Taxon (Glossary)
No Taxon (C)
No Taxon complete metamorphosis
Insects undergoing complete metamorphosis have a four-stage life cycle:
1-egg (embryo)
2-larva, typically worm-like with several stages (instars)
3-pupa (resting, transformative stage)
4-imago (adult, sexual stage, typically winged)

An insect that undergoes complete metamorphosis is called holometabolous. The following orders have this type of development:
Neuroptera - Antlions, Lacewings and Allies
Coleoptera - Beetles
Hymenoptera - Ants, Bees, Wasps and Sawflies
Trichoptera - Caddisflies
Lepidoptera - Butterflies and Moths
Mecoptera - Scorpionflies, Hangingflies and Allies
Diptera - Flies
Siphonaptera - Fleas
Strepsiptera - Twisted-winged Insects

See metamorphosis for more details.