How to Manage Pests
Pests in Gardens and Landscapes
There are several species of sphinx moths that vary somewhat from one another, particularly in color
and pattern. Sphinx moth larvae are distinguished by a long black horn on the back end. When fully grown,
the caterpillar is 3 inches long, has a dark button where the horn used to be, may vary in color, and
has at least six diagonal white stripes down the sides.
Sphinx moths are generally minor pests, appearing cyclically. Caterpillars feed on grape leaves, first
causing small round holes and later consuming the entire leaf.
Because the occurrence of sphinx moths is cyclic, noticeable damage is uncommon. Naturally occurring
parasites normally control this pest, and other control should not be needed.