Sirex noctilio

Adults fly in the second half of summer. They seek out freshly cut down or uprooted trees. The female drill their ovipositors into the outer sapwood to inject eggs. One female lay from 30 to 400 eggs. From the eggs hatch larvae eating out galleries round in cross-section. Galleries in wood are firmly clogged with sawdust. The adults emerge from wood by eating out a round exit hole, 4-6 mm in diameter. Larvae overwinter twice and pupation occurs in May. This species has one generation per 2 years. Sirex woodwasp is native to Europe, and it is generally considered to be a secondary pest. It can significantly lowers the technical applicability of wood. The damage can escape one’s notice when wood is being processed. Thus, as a result, adults can hatch from furniture, wooden beams or flooring.