Bug Identifier
California Root Borer
Community identification

California Root Borer

Prionus californicus

Order & Family
Order: Coleoptera, Family: Cerambycidae
Size
25 to 50 mm in length
See this bug in the Encyclopedia

Natural Habitat

Forests, woodlands, and orchards in western North America

Diet & Feeding

Larvae feed on the roots of various trees and shrubs, while adults generally do not feed and rely on stored fat reserves

Behavior Patterns

Larvae live underground for several years feeding on roots, pupate in the soil, and adults emerge in summer, being strongly attracted to artificial lights at night

Risks & Benefits

Larvae can cause significant damage to orchards and timber by weakening or killing trees through root destruction, but they are a natural part of forest ecosystems and provide a food source for wildlife