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Fergusonina sp. (genus) MichaelMulvaney 30 Mar 2022
Unverified ruthkerruish 30 Mar 2022

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Although I put in an insect size 0 it is wrong - I don't know - haven't cut the galls open - I want them to develop a bit further,

3 comments

   30 Mar 2022
If it is the gall-forming fly family Fergusonina, I understand that it is in association with a nematode, and induces galls on Myrtaceae, eg eucalypts. It is being considered overseas as a biological control agent for the common paperbark (Melaleuca quinquenervia).
It has certainly done a lot of damage to the young eucalypt in the park
   30 Mar 2022
   30 Mar 2022

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Sighting information

  • 1 Abundance
  • ruthkerruish Recorded by
  • Young Eucalypt tree totally devoid of leaves Associated plant
  • Possibly a very large wasp gall (20mm) - much larger than the usual insect gall on eucalypts Associated animal
  • Less than 5mm Animal size

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Quality score 5 / 7
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