Picture of the Day

Wooly Bear Caterpillar

March 12, 2023   ―-  Archive

Here is a Wooly bear caterpillar we found crawling across the parking area at Hall Ranch Open Space in Boulder County, Colorado on February 21, 2023. This caterpillar protects itself from freeze damage by producing a cryoprotectant allowing itself to freeze solid with no problems. Its adult form is the isabella tiger moth (Pyrrharctia isabella).

Authors: Richard Hollos and Stefan Hollos