ACT NSW ACT Government :: Queanbeyan-Palerang Regional Council :: Australian Native Plants Society (ANPS) Canberra Region :: Gearys Gap/Wamboin Landcare Group
Home Insects Wasps (Hymenoptera, Apocrita) Parasitic wasps (numerous families)

Chalcidoidea sp. (superfamily)

1 A gall wasp or Chalcid wasp at Greenway, ACT

Chalcidoidea sp. (superfamily) at Greenway, ACT - 17 Jul 2018
Chalcidoidea sp. (superfamily) at Greenway, ACT - 17 Jul 2018
Chalcidoidea sp. (superfamily) at Greenway, ACT - 17 Jul 2018
Chalcidoidea sp. (superfamily) at Greenway, ACT - 17 Jul 2018
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Identification history

Chalcidoidea sp. (superfamily) 19 Oct 2018 MichaelMulvaney
Chalcidoidea sp. (superfamily) 13 Oct 2018 RogerF
Unidentified 13 Aug 2018 michaelb

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User's notes

Among boulders on the east side of the Murrumbidgee River, south of Pine Island.

9 comments

michaelb wrote:
   13 Aug 2018
Rainer R. thinks that these unusual objects that look like woody fruits are caused either by insect galls or a virus from sucking insects. Is it possible to name the culprit?
RogerF wrote:
   14 Aug 2018
You would need a sample to dissect and some to keep to see if anything emerges.. In other plants similarly shaped galls are sometimes induced by eriococcid scales.
michaelb wrote:
   14 Aug 2018
It is difficult terrain consisting mostly of large boulders and it will be hard to find the plant again, so I was hoping not to go back. But I will do so to collect samples when I get a chance.
michaelb wrote:
   24 Aug 2018
Hi Roger
The plant wasn't as hard to find as I expected. I was visiting the area with Margaret Ning to look at some Grevilleas and Rainer Rehwinkel was accompanying her unexpectedly. I took the opportunity to show him the plant. He assured me the unusual growths were galls. I took some home for closer examination. Most of the galls had a single hole indicating that the insect had left. The holes were tiny, about 0.5mm in diameter. I dissected one with a hole and there was an empty cavity in the interior. There were only 2 galls that didn't have an exit hole. The inhabitants may be dead.
So my question is what should I do with the specimens, especially the ones which may still have an insect inside?
KimPullen wrote:
   16 Sep 2018
I'm interested to know the culprit too. You could put some galls into a bag and check it frequently to see what emerges. A ventilated bag (e.g. cotton or very fine mesh) is less likely to cause mould to grow on the galls, and you can spray them with water now and then to keep them fresh.
michaelb wrote:
   16 Sep 2018
Still waiting for something to emerge. Thanks for the advice Kim.
michaelb wrote:
   13 Oct 2018
It has been a long time since I collected the material. Nothing has emerged from the remaining galls and they were quite dry and hard. So I dissected them. All of them had an empty hollow inside but with no sign of life, except for one which had what looked like insect excreta but no insect.
So all the galls were duds.
I will need some assistance to find out what these insects are. I'm speculating now, but it seems that the important thing is to know when to harvest the material so that the insect inside the galls is mature enough to survive the challenge of a branch containing the gall being removed and then be able to emerge as an adult.
RogerF wrote:
   13 Oct 2018
Sorry I missed your comment of 24 August. The small exit holes suggest the galls were induced by a species of gall-wasp. Hymenoptera: Chalcidoidea orCynipoidea. There are several families of gall wasps that induce such bud galls, notably Torymyidae (Chalcid). They mostly have annual life-cycles with the galls developing during spring and summer, so the best time to collect mature galls would be in autumn. Woody galls may persist for several years after the wasps have emerged. Its a different matter to identify the wasps as there are many species and expertise is no longer available. There are collections of galls and their inducers in ANIC. Another issue is that the primary gall inducers are often parasitised by other wasps notably from the family Pteromalidae, so what emerges may be a parsitoid or hyperparasitoid.
Have you tried looking through Bowerbird.
michaelb wrote:
   13 Oct 2018
I haven't done a search, but I put this sighting on BowerBird, including the Australian Wasps project, but I have got no ID response.

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Nearby sightings

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Acanthorhynchus tenuirostris (Eastern Spinebill) at Greenway, ACT - 13 May 2022 by RodDeb
Stackhousia monogyna (Creamy Candles) at Greenway, ACT - 10 Oct 2021 by MB
Calyptorhynchus funereus (Yellow-tailed Black-Cockatoo) at Greenway, ACT - 3 Nov 2018 by MatthewFrawley
Merops ornatus (Rainbow Bee-eater) at Greenway, ACT - 3 Nov 2018 by MatthewFrawley
Grevillea lanigera (Woolly grevillea) at Greenway, ACT - 17 Jul 2018 by michaelb
Lissanthe strigosa subsp. subulata (Peach Heath) at Greenway, ACT - 17 Jul 2018 by michaelb
Pleurosorus rutifolius (Blanket Fern) at Greenway, ACT - 17 Jul 2018 by michaelb
Riccia cartilaginosa (Liverwort) at Greenway, ACT - 17 Jul 2018 by michaelb
Pleurosorus rutifolius (Blanket Fern) at Greenway, ACT - 17 Jul 2018 by michaelb
Callococcus acaciae (Burgan woolly scale) at Greenway, ACT - 17 Jul 2018 by michaelb
Veronica perfoliata (Digger's Speedwell) at Greenway, ACT - 17 Jul 2018 by michaelb
Asperula ambleia (Stiff woodruff) at Greenway, ACT - 17 Jul 2018 by michaelb
Lissanthe strigosa subsp. subulata (Peach Heath) at Greenway, ACT - 17 Jul 2018 by michaelb
Melaleuca parvistaminea (Small-flowered Honey-myrtle) at Greenway, ACT - 17 Jul 2018 by michaelb
Leucopogon attenuatus (Small leaved beard heath) at Greenway, ACT - 17 Jul 2018 by michaelb
Callitris endlicheri (Black Cypress Pine) at Greenway, ACT - 17 Jul 2018 by michaelb
Asperula ambleia (Stiff woodruff) at Greenway, ACT - 16 Jul 2018 by michaelb
Taxeotis intextata (Looper Moth, Grey Taxeotis) at Greenway, ACT - 18 Dec 2017 by michaelb
Mictis profana (Crusader Bug) at Greenway, ACT - 29 Oct 2017 by MatthewFrawley
Dichromodes atrosignata (Black-signed Heath Moth ) at Greenway, ACT - 21 Oct 2017 by michaelb
Daviesia mimosoides (Bitter Pea) at Greenway, ACT - 15 Oct 2017 by michaelb
Asperula ambleia (Stiff woodruff) at Greenway, ACT - 15 Oct 2017 by michaelb
Asperula ambleia (Stiff woodruff) at Greenway, ACT - 15 Oct 2017 by michaelb
Myrmecia nigriceps (Black-headed bull ant) at Greenway, ACT - 23 Feb 2017 by michaelb
Cymbopogon refractus (Barbed-wire Grass) at Greenway, ACT - 12 Jan 2017 by michaelb
Bursaria spinosa (Native Blackthorn) at Greenway, ACT - 12 Jan 2017 by michaelb
Eupoecila australasiae (Fiddler Beetle) at Greenway, ACT - 12 Jan 2017 by michaelb
Cryptocheilus bicolor (Orange Spider Wasp) at Greenway, ACT - 12 Jan 2017 by michaelb
Chenopodium album (Fat Hen) at Greenway, ACT - 22 Feb 2015 by michaelb
Schoenoplectus validus (River Club-rush) at Greenway, ACT - 22 Feb 2015 by michaelb
Persicaria hydropiper (Water Pepper) at Greenway, ACT - 22 Feb 2015 by michaelb
Calytrix tetragona (Common Fringe-myrtle) at Greenway, ACT - 22 Feb 2015 by michaelb
Veronica perfoliata (Digger's Speedwell) at Greenway, ACT - 22 Feb 2015 by michaelb
Bertya rosmarinifolia (Rosemary Bertya) at Greenway, ACT - 22 Feb 2015 by michaelb
Portulaca oleracea (Pigweed, Purslane) at Greenway, ACT - 22 Feb 2015 by michaelb
Pelargonium australe (Austral Stork's-bill) at Greenway, ACT - 22 Feb 2015 by michaelb
Crassula sieberiana (Austral Crassula) at Greenway, ACT - 22 Feb 2015 by michaelb
Austrostipa densiflora (Foxtail Speargrass) at Greenway, ACT - 13 Nov 2014 by michaelb
Correa reflexa var. reflexa (Common Correa, Native Fuchsia) at Greenway, ACT - 13 Nov 2014 by michaelb
Bulbine glauca (Rock Lily) at Greenway, ACT - 13 Nov 2014 by michaelb
Chrysocephalum apiculatum (Common Everlasting) at Greenway, ACT - 13 Nov 2014 by michaelb
Discaria pubescens (Australian Anchor Plant) at Greenway, ACT - 13 Oct 2014 by michaelb
Discaria pubescens (Australian Anchor Plant) at Greenway, ACT - 13 Oct 2014 by michaelb
Vittadinia cuneata var. cuneata (Fuzzy New Holland Daisy) at Greenway, ACT - 13 Oct 2014 by michaelb
Hakea microcarpa (Small-fruit Hakea) at Greenway, ACT - 13 Oct 2014 by michaelb
Discaria pubescens (Australian Anchor Plant) at Greenway, ACT - 13 Oct 2014 by michaelb
Stackhousia monogyna (Creamy Candles) at Greenway, ACT - 13 Oct 2014 by michaelb
Stackhousia monogyna (Creamy Candles) at Greenway, ACT - 26 Sep 2014 by galah681
Discaria pubescens (Australian Anchor Plant) at Greenway, ACT - 24 May 2014 by michaelb
Aristida ramosa (Purple Wire Grass) at Greenway, ACT - 5 Feb 2007 by michaelb
Austrostipa densiflora (Foxtail Speargrass) at Greenway, ACT - 5 Feb 2007 by michaelb
Austrostipa densiflora (Foxtail Speargrass) at Greenway, ACT - 5 Jan 2007 by michaelb
Poa sieberiana (Poa Tussock) at Greenway, ACT - 5 Jan 2007 by michaelb
Lachnagrostis filiformis (Blown Grass) at Greenway, ACT - 22 Nov 2006 by michaelb
Wahlenbergia luteola (Yellowish Bluebell) at Greenway, ACT - 16 Nov 2006 by michaelb
Pelargonium australe (Austral Stork's-bill) at Greenway, ACT - 29 Mar 2004 by michaelb

Location information

Species information

  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 4 - 15 Abundance
  • 17 Jul 2018 05:51 PM Recorded on
  • michaelb Recorded by

Additional information

  • Lissanthe strigosa (Peach Heath) Associated plant
  • Less than 5mm Animal size

Record quality

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