Cranberry weevil

Life Cycle:
Adults (2 separate broods): The overwintering cranberry weevil adult (which overwinters in surrounding woods) is about 1/10″ to 1/16″ long, dark red/crimson or a dark red-brown. Like all weevils, it has a snout (or beak), with its antennae arising from about the middle of the snout (see photos). They seldom fly because their bodies are heavy and stout, but when they do, they have been observed to make single flights of up to 75 feet. The weevils that are alive in the spring are referred to as the ‘Spring generation’ in order to distinguish them from the offspring of this generation, which are subsequently hatched out from the eggs that are laid later on, during bloom (these ‘brand new’ adults are thus referred to as the ‘Summer generation’).  Spring-generation adults are older and weaker, having had to overwinter, and so they are the ones that are targeted in spray programs (sprays on summer-generation weevils have not, to date, been effective).
Eggs: Females will insert a single egg between the petals of a developing blossom bud during June and July in Maine and Massachusetts. Many of the infested blossom buds (or pods) fall to the ground, some even before the egg hatches. In the lab at the UMass Cranberry Experiment Station, egg laying was observed in large, fully developed blossom buds. Females will often completely sever the pedicel with their mouthparts after laying their egg inside. But on smaller blossom pods, females tend to only partially cut the pedicel following egg-laying, creating a point of weakness. [The female weevil does this in blueberry as well]. Each female may lay 50 or more eggs in her lifetime, which can last at least 13 months. The smooth, round eggs are no larger than 1/16″ and are pale yellow in color.
Larvae: The white, legless grub is approximately 1/9″ long (one is pictured in the 3rd-to-last photo at the top of the page). As it grows, it will consume all of the internal flower parts. The larva then pupates, until it finally emerges as an adult. The entire life cycle–from egg to adult–takes about 2 months and can also be completed on wild and cultivated blueberry.