Catalpa Sphinx Caterpillar Albino?
Your site is terrific! We used it to identify these caterpillars which are madly defoliating our catalpa trees, and we checked out the link you offered as well. But, we’ve not found specific information to help us determine the nature of the very pale version. Could this be an albino of the catalpa sphinx?
Nice photo. Here is what we do know. The smallest caterpillar exhibits the normal coloration of an early Catalpa Sphinx instar. The largest caterpillar also exhibits normal coloration. There are albinos possible in all species. This could be an albino. If that is true, the adult would probably also exhibit albinism. Good find.