Utah State University Extension
Shothole attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs (fruit infections are less common on cherry). The first visible lesions occur on young leaves as small, round, purplish-black spots. Eventually these infections fall out, leaving round holes, and giving this disease its name. Circular lesions may develop on fruit that first appear as reddish spots, and later as rough, corky bumps.
Murray, Marion and Alston, Diane, "The Backyard Orchard – Cherry Pests" (2011). All Current Publications. Paper 970.