
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.
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.