Bug Identifier
Sawfly (likely a horntail sawfly)
Community identification

Sawfly (likely a horntail sawfly)

Likely *Urocerus* sp. (identification uncertain from image)

Order & Family
Hymenoptera; likely family Siricidae
Size
Typically 15–35 mm long, including the prominent ovipositor in females.
See this bug in the Encyclopedia

Natural Habitat

Woodlands, forests, and areas containing recently felled, stressed, or dead coniferous wood; adults may enter homes accidentally.

Diet & Feeding

Larvae tunnel through wood and feed on wood softened by symbiotic fungi. Adults generally do not feed or take only liquids such as nectar.

Behavior Patterns

Females drill into timber with a saw-like ovipositor and deposit eggs; larvae develop inside wood for months to several years before emerging. Adults are usually solitary and nonaggressive.

Risks & Benefits

They are harmless to people and do not possess a functional stinger. Larvae help decompose woody material, though some species can damage untreated structural or stored timber.