Celastrina-serotina
Guides
Eriophyes cerasicrumena
Black Cherry Leaf Gall Mite
Eriophyes cerasicrumena is a gall mite in the family Eriophyidae that induces distinctive spindle-shaped galls on black cherry (Prunus serotina) leaves. The species was formerly classified under the genus Phytoptus. The galls serve as a food source for caterpillars of the cherry gall azure butterfly (Celastrina serotina), which consume both gall tissue and the mites themselves. The species is documented across eastern North America with over 8,600 observations.