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

Information, insects and people from the 2019 BugGuide 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.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

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.