Pest description and damage Larvae are 0.5 inch in length, yellowish to greenish, with black spots and a yellow-brown head. Pupae are yellow to brown within a white silken cocoon. The larvae skeletonize and roll leaves from the tip or sides. Damaged leaves are brown and papery and drop prematurely. Adult moths are reddish brown, with a wingspread less than 0.5 inch, and irregular light and dark bands on the wings.
Damage varies from inconsequential to serious, so monitoring is an important management tool.
For biology, life history, monitoring and management
Crabapple (Malus)-Apple-and-thorn skeletonizer
See Table 2 in: