RANDY C. ANDERSON
PHOTOGRAPHY

What Is An Osmeterium?

This Black Swallowtail caterpillar is displaying its Osmeterium. The osmeterium is a defensive organ found in all butterfly larvae, in all stages. When a larvae feels threatened it will display the organ and it emits a very odorous, distasteful secretion to repel predators.

 

The Osmeterium

All Images And Content Are ©2016 Randy C. Anderson • All Rights Reserved

All Images And Content Are ©2016 Randy C. Anderson • All Rights Reserved