Euribia solstitialis

Nodding Thistle Gall Fly at Hall, ACT

Euribia solstitialis at Hall, ACT - 7 Nov 2023
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Identification history

Euribia solstitialis 13 Nov 2023 MichaelMulvaney
Euribia solstitialis 10 Nov 2023 RogerF
Unidentified 9 Nov 2023 Rosie

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User's notes

Possibly Euribia solstitialis was Alison M's suggestion.

3 comments

Rosie wrote:
   10 Nov 2023
Thank you Roger!
   13 Nov 2023
You will be pleased to know that this fly is a biological control agent acting against nodding thistle
Rosie wrote:
   13 Nov 2023
We'd better go easy on removing these particular thistles as they're obviously in their second year!
We're only seeing new-season's thistle rosettes there at present.
Thank you Michael.

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Location information

Sighting information

Additional information

  • Thistle species Associated plant
  • 5mm to 12mm Animal size
  • Breeding behaviour Breeding behaviour
  • Alive / healthy Animal health
  • Breeding behaviour Insect behaviour on flower
  • True Pollinator Insect on Flower

Species information

Record quality

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  • More than one media file
  • Verified by an expert moderator
  • Nearby sighting(s) of same species
  • GPS evidence of location
  • Description
  • Additional attributes
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