It is usually dark brown in color with a pair of mottled gray patches near the back of the wing covers. The top surface of each wing cover has three distinct bumps that are most obvious when the insect is viewed from the side. Larvae are white legless grubs with a distinct brown or tan head capsule. Adult stage of the plum curculio. These conditions usually occur about the time blueberry plants finish blooming.
Female weevils lay their eggs in shallow pits excavated on the surface of green berries.
Usually a single egg is laid in each berry, and a crescent shaped scar develops on the surface at this oviposition site. Upon hatching, larvae burrow into the fruit where they feed on the pulp for about two weeks. Fully grown larvae leave the fruit, burrow into the soil, and pupate within an earthen chamber. Adult weevils emerge about 4 weeks later. Crescent-shaped oviposition scars are the most reliable symptom of weevil infestation.