Published February 20, 2017 at 572 × 282 in AUSTIN AREA PESTS Sow Bug aka Roly Poly (Oniscidea) They have gray bodies they can be up to 3/8-inch long. Sow bugs have kind of a tail on the back end and are able to roll up into a ball when they’re bothered. They are also known as “roly-polies”. They breed mainly in the spring. They like damp dark areas, and are mainly found outdoors under stones, logs, and leafs.