Trichilogaster sp. (genus)

Acacia gall wasp at Jerrabomberra, ACT

Trichilogaster sp. (genus) at Jerrabomberra, ACT - 25 Oct 2022
Trichilogaster sp. (genus) at Jerrabomberra, ACT - 25 Oct 2022
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Identification history

Trichilogaster sp. (genus) 26 Oct 2022 SimoneC
Trichilogaster sp. (genus) 25 Oct 2022 Mike

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5 comments

SimoneC wrote:
   25 Oct 2022
Hi Mike, the plant with the galls looks like an acacia is that right?
Mike wrote:
   25 Oct 2022
It is Acacia longifolia subspecies. longifolia. This shrub was covered in galls.
RogerF wrote:
   25 Oct 2022
Interesting, I saw the same galls on A. longifolia in Hall Horse Paddocks last Wednesday. Its a flower gall and the yellow dots are aborted flowers.
Mike wrote:
   26 Oct 2022
Trichilogaster acaciaelongifoliae has been introduced to South Africa to control invasive wattle Acacia longifolia. See waspweb.org for photos of the adult wasp.
RogerF wrote:
   26 Oct 2022
Also proves that this minute wasp has good disperive powers as the A. longifolia in HHP is quite isolated. Many aeons ago when I was investigating insect dispersal in the upper air at CSIRO using a net suspended from a kite at 100-200 m altitude I caught many unidentifed micro-Hymenoptera.

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  • 101 - 1,000 Abundance
  • 25 Oct 2022 03:00 PM Recorded on
  • Mike Recorded by

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