Wildfall Caterpillar

 

I find some of my best caterpillars on boardwalks under trees on windy days. They get blown from the tree and fall onto the contrasting surface of the boardwalk where they stand out. This one is a catalpa sphinx moth caterpillar, Ceratomia catalpae. I found in one windy day last week on a boardwalk under -- you guessed it -- a catalpa tree. Click to enlarge.

The leaves have not yet fallen from the catalpa trees in my neighborhood. That's lucky for this caterpillar because catalpa leaves are all it eats. It is even sometimes called a catalpa worm. The tree and its caterpillar are native to the eastern United States. When I was a child, we called catalpa trees Johnny Smoker trees for their long, cigar-shaped seed pods.  

The caterpillar is facing left. Notice the long black horn rising from its rear end. 

The horn is just for looks; it does not sting. It is thought to be a visual defense that makes the caterpillar look dangerous to would-be predators. It works for me. The next stage for this caterpillar is to make its way to the ground. It will burrow down and form a pupa, within which it will remain dormant through the winter. Maybe it wasn't blown out of the tree, after all, just wending its way along the boardwalk, looking for some nice dirt to pupate in?