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Te katipō rākau

Wood wasp

Sirex noctilio Fabricius
Wood wasp / Te katipō rākau. Image: Mary Cooper

Wood wasp / Te katipō rākau. Image: Mary Cooper

Pūtoi
Order
Hymenoptera
Whānau
Family
Siricidae
Show in English Te Reo

Te Rahi

  • He pepeke rahi, e 35 mm pea te roa.

Size range

  • Large insect, up to 35 mm long

Te Tītaringa

  • I tau mai ki Aotearoa mai i Ūropi i mua i te tau 1900, kua rarau te noho puta noa i te motu.

Distribution

  • Arrived from Europe before 1900, now established throughout New Zealand

Te Huringa Ora

  • Tukuna ai e te uwha ngā hua ki te taitea o te paina, me te kuhu atu anō i tētahi momo harore i te taha.
  • Ko ngā rākau kāore e tino kaha ana te tipu ngā mea ka kaha te urutomokia.
  • Ka wiri haere ngā torongū i ngā wāhanga o te rākau kua pirau haere, me te kai anō i taua harore. Ka huri hei ngeti ki tōna anō whaitua i roto i te rākau.
  • Kia pakeke, kua wiri ki te mata whakawaho o te rākau, he kōhao nui tonu (e 3–6.6 mm te whānui) ka mahue iho.
  • Kāore ngā pakeke e kai; ka ora noa i ngā mōmona kei ō rātou tinana.

Life history

  • Eggs are deposited by females in sapwood of pine trees, introducing a fungus at the same time
  • Usually less vigorous trees are attacked
  • The larvae tunnel through infected wood, feeding on the fungus and pupate in a chamber in the wood
  • Adults bore their way to the surface, leaving a sizeable hole, 3–6.6 mm in diameter
  • Adults do not feed, they live on fat stored in their bodies