Subject: Found on tree
Geographic location of the bug: Southern Utah USA
Time: 03:17 PM EDT
Found this on the tree in our yard. What is it?
How you want your letter signed: Brian Shepherd
This is a Rustic Sphinx, and because of its rumpled wings, it appears it has recently eclosed or emerged from the pupa. When its wings attain their full size and they harden and the moth will be able to fly. According to BugGuide, Caterpillars of the Rustic Sphinx feed on numerous plants, including the leaves of ash trees. Was it by chance found on the trunk of an ash tree? Just prior to pupation, the caterpillars bury themselves and they pupate underground.