
Community identification
Ten-lined June beetle
Polyphylla decemlineata
- Order & Family
- Coleoptera, Scarabaeidae
- Size
- 20 to 35 mm (0.8 to 1.4 inches) in length
Natural Habitat
Coniferous forests, sand dunes, and gardens in Western North America
Diet & Feeding
Adults feed on the needles of conifer trees; larvae (grubs) live underground and feed on the roots of various plants.
Behavior Patterns
Active at night and frequently attracted to lights. They are known to produce a distinct Hissing sound when disturbed by rubbing their wings against their abdomen.
Risks & Benefits
Adults are harmless to humans. Larvae can occasionally be pests in nurseries or gardens by damaging plant roots, while adults serve as food for various nocturnal animals.