
Community identification
Acorn Weevil
Curculio glandium
- Order & Family
- Order: Coleoptera; Family: Curculionidae
- Size
- 4 mm to 8 mm (excluding the long rostrum or snout)
Natural Habitat
Found in deciduous forests and woodlands, particularly near oak trees.
Diet & Feeding
Adults feed on the leaves and fruit of the oak tree; larvae live and feed inside acorns.
Behavior Patterns
The female uses her long snout to drill a hole into a developing acorn to lay eggs. Once the acorn falls, the larva emerges and borrows into the soil to pupate, sometimes staying underground for 1 to 2 years.
Risks & Benefits
They are harmless to humans and do not bite or sting. While they can damage a significant percentage of an oak's acorn crop, they are a vital part of the ecosystem as a food source for birds and small mammals.