Pearleaf blister mites cause raised bumps. They start out green, and then turn dark brown.
Fruit
Appleleaf blister mites start out green and later in the season, turn brown in color. They do not harm the plant.
Apple scab forms blotchy lesions on foliage and fruit. It is more of a problem on backyard trees.
Early coryneum infections on fruit appear as purplish spots.
Adult raspberry horntails are sawflies, and their larvae feed inside the tops of raspberry canes, making them wilt over. Often, pruning out infested canes is...
Fire blight is caused by a bacteria, and infections primarily start in open flowers.
Codling moth entry in a young apple fruit.
Syrphid fly larvae are maggots, ranging in color from yellow to olive green to bright green.
Syrphid flies are one of the first insect predators to see in spring. They look like bees, but you'll see that they just have one set of wings, like flies.
Lady beetle larva.
Lady beetle adults seek out their prey and lay clusters of bright yellow eggs.
Codling moth larvae feed on seeds inside the fruit.
Powdery mildew shows up on newer foliage first, and foliage may become yellowed and distorted.