European woodwasp/Sirex woodwasp in Colorado : identification of insects and damage of similar appearance
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The European woodwasp (Sirex noctilio) is a wood boring horntail wasp (Family Siricidae) of European origin that recently was identified as being established in the mid-Atlantic region of the US. This insect is primarily attracted to trees that are stressed or in decline but healthy trees can also be attacked. Damage that the insect produces is partly related to wood tunneling by the larvae but more importantly the European wood wasp spreads a fungus (Amylostereum areolatum) that produce a white rot which can seriously weaken the wood.