Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

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

National Moth Week 2020 photos of insects and people.

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

Discussion, 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

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events

Hemimetabolous Metamorphosis

Hemimetabolous Metamorphosis
Also known as incomplete or simple metamorphosis. Insects that undergo hemimetabolous metamorphosis emerge from eggs into nymphs (called larvae by some entomologists) that are similar in shape to the adults. They go through several nymphal stages (called instars) before they undergo a final molt into their adult form. You can distinguish the nymphs from the adults by looking for wings. With one exception (mayflies), only the mature, adult stages of insects have fully developed wings. Wingbuds or wingpads may be present in late stage nymphs, but they are fixed in place against the body and are non-functional.