I am trying to help a friend identify this caterpillar. she lives in east texas near mt pleasant. thank you for your help
It is the white-blotched Heterocampa caterpillar which turns into a moth.
The moth is gray with a whitish blotch on the outside rear area of the forewing. Moths are nocturnal, but are attracted to lights.
These caterpillars are many times green with whitish blotches or orangish red with whitish blotches, or the gray and pinkish color. This caterpillar usually turns the pinkish purple color when they are mature and ready to pupate. It has probably crawled down the tree to find a place in the soil to pupate for the winter. They do have a couple of small knobs right behind the head. The caterpillars feed on the leaves of oak trees, but are not a pest. There are usually 2 generations per year…more in FL.
This insect is found in woodlands in eastern North America (from TX eastward)
This caterpillar will not bite or cause a rash.