ACT NSW ACT Government :: Queanbeyan-Palerang Regional Council :: Australian Native Plants Society (ANPS) Canberra Region :: Gearys Gap/Wamboin Landcare Group
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Unidentified at suppressed - 29 Mar 2022
Unidentified at suppressed - 29 Mar 2022
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Identification history

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

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User's notes

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,


   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
  • 29 Mar 2022 11:51 AM Recorded on
  • ruthkerruish Recorded by

Additional information

  • 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 Insect
  • Less than 5mm Animal size

Record quality

  • Images or audio
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  • Confirmed by an expert moderator
  • Nearby sighting(s) of same species
  • GPS evidence of location
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