What are the small insects causing the leaves to curl on my cherry tree? - Cooperative Extension: Garden and Yard - University of Maine Cooperative Extension

Question: I’m interested to know about an infestation on our cherry trees. There are colonies of small insects living under the tree leaves which are curling in on themselves. These spots are of interest to ants for some reason. Is this a concern or a normal relationship between the tree, the little black insects and read more