Monarch caterpillar in final development stage before metamorphosis
A monarch caterpillar in its final development stage before metamorphosis. Monarchs have five instars, or growth stages, between the time they hatch and metamorphosis.
[Research supported by National Science Foundation grant DEB 0949650.]
Learn more about this research in the Florida Museum news story Florida monarch butterfly populations have dropped 80 percent since 2005. (Date image taken: unknown; date originally posted to NSF Multimedia Gallery: March 4, 2020)
Credit: Photo courtesy of Kelly Sims Dunford and Matthew Standridge
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