Elm Sphinx - Ceratomia amyntor

''Ceratomia amyntor'', the elm sphinx or four-horned sphinx, is a North American moth in the family Sphingidae. The species was first described by Carl Geyer in 1835. It has a wingspan of ​3 1⁄4-​4 1⁄2 inches . As the name suggests, the larvae feed on elm trees , but they can also be found feeding on birch , basswood , and cherry . When the caterpillars are ready, they crawl to the bottom of the host tree, where they crawl underneath the soil and pupate and may overwinter underground if.. more