Bug Identifier
Whitespotted Sawyer Beetle
Community identification

Whitespotted Sawyer Beetle

Monochamus scutellatus

Order & Family
Order: Coleoptera; Family: Cerambycidae
Size
18 to 31 mm (excluding antennae)
See this bug in the Encyclopedia

Natural Habitat

Coniferous forests throughout North America; frequently found near burned, dead, or dying pine, spruce, and balsam fir trees.

Diet & Feeding

Adults feed on the bark of conifer twigs; larvae (woodworms) tunnel into and feed on the wood of dead or dying conifers.

Behavior Patterns

Diurnal insects known for their extremely long antennae; they are attracted to the scent of burnt timber and often colonize forests after fires. They undergo a complete metamorphosis from egg to adult within tree trunks.

Risks & Benefits

Harmless to humans as they do not sting or carry diseases, though their mandibles can pinch if handled. They play a vital role in the ecosystem by breaking down dead wood, but can cause economic damage to the timber industry by degrading logs.