Cladosporium carpophilum Thuem.
Distribution: Common to all fruit-growing regions in eastern North America, but is most important in warm and humid production regions.
Fruit lesions are small, greenish and circular. They become enlarged and darker as spore production begins.
Mid-Atlantic Orchard Monitoring Guide
On fruit, lesions begin as small, greenish circular spots that gradually enlarge and darken as spore production begins (A). These spots appear when fruit are half grown and are most common on the stem end of the fruit, but can occur over the whole surface. Secondary infections may occur on twigs (B), and late-season variety fruit.