Sirex woodwasp (Sirex noctilio) Fabricius, 1793

Origin
Native to Europe, Asia, and northern Africa.

Life Cycle
Female S. noctilio insert their ovipositor into the sapwood through the bark of physiologically stressed pines. During insertion, a toxic venom and spores of the symbiotic fungus Amylostereum areolatum are introduced. Adult S. noctilio emerges through round exit holes after larvae consume the fungus.

Distribution
S. noctilio has spread into the Midwestern and northeastern United States and southeastern Canada.

Control Efforts
Forest managers must follow appropriate thinning schedules to maintain healthy tree stands and to monitor S. noctilio populations.

http://entnemdept.ufl.edu/creatures/misc/wasps/Sirex_noctilio.htm

Resources

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• Pest Alert - USDA Forest Service
• Pest Alert - USDA Forest Service
• Sirex noctilio (Sirex Woodwasp) - USDA APHIS
• Sirex Woodwasp: Description and Management Practices Guide for New York Forests - NYS Department of Environmental Conservation, Division of Lands and Forests

Selected Images

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Invasive Listing Sources

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• Delaware Invasive Species Council Invasive Species List
• Idaho Invasive Species Act
• Invasive Species of Concern in Georgia
• Maryland Invasive Species Council - Invasive Species of Concern in Maryland
• New Jersey Invasive Species Strike Team 2017 Invasive Species List
• New York Regulated and Prohibited Invasive Species - Prohibited
• North American Forest Commission Exotic Forest Pest Information System

References

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Common Name Reference: Derived from taxonomy / Generic common name

Scientific Name Reference: R.W. Poole and P. Gentili, Nomina Insecta Nearctica. 1996. Nomina insecta nearctica: a checklist of the insects of North America. Vol. 1-4. Rockville (MD): Entomological Information Services. Available at URL: http://www.nearctica.com/nomina/main.htm