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Hemicordulia tau

Tau Emerald at Berry, NSW

Hemicordulia tau at Berry, NSW - 25 Sep 2020
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Identification history

Petalura gigantea 28 Sep 2020 Username279
Hemicordulia tau 28 Sep 2020 HarveyPerkins
Hemicordulia tau 28 Sep 2020 HarveyPerkins
Unidentified 28 Sep 2020 Username279

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Author's notes

Looked pretty meaty

10 comments

   28 Sep 2020
I’d have to say nope, looks a lot bigger
CBrandis wrote:
   28 Sep 2020
Poor photo but there appears to be a yellow diagonal stripe from the wing base to the legs and a yellow band across the face.
   28 Sep 2020
Would like to go look for it but, some muppet is doing a Reno, the noise is unbearable
   28 Sep 2020
I'd have to say nope - no way it's a Petalura. But I do agree it's a very poor photo to have to work with. In response to CB's notes: Many dragonflies have yellow diagonal stripes like that (e.g. Blue-spotted Hawker, Forest Darner, cascade darners) - comes with the territory of the angle of the thoracic segments. But I'd also make the point that the individual in this record has what I'd describe as darker bands through what is otherwise a yellowish thorax rather than yellow stripes per se. But if you look at a bright, freshly-emerged Tau Emerald, it can have quite yellow markings that I'd say are not at odds with what is visible in this photo. Re the yellow "band" across the face - I'd say the entire face is yellowish, with what I'd interpret as a darker inverted "T" towards the top - as per a Tau Emerald. The other thing I looked at to suggest Tau Emerald was the gradation in colour from the proximal abdominal segments which are quite yellowish, to a darker distal end to the abdomen, and, if I really squint and increase the size of the photo, can argue that you can just make out the yellow side patches, diminishing in size. The eyes are also relatively light brownish, not dark. I can't make any real comment on size, but given it's on a rose bush, I see nothing to suggest it does not fit with a Tau Emerald in size.
The other thing that argues very strongly against Petalura is that they are generally recorded through mid-summer and anything earlier than November would be fairly exceptional. Late September is unheard of (according to ALA records).
As we know, a Petalura would be a very significant sighting. Chris, I thought there was a recent record submitted, I thought from up near Berry, that is no longer up. What is the story there? And I also note that the only record now on BCNM is a 2008 record of yours from Morton NP that has no supporting photo, but used instead a photo from Penrose SF.
CBrandis wrote:
   28 Sep 2020
Was 2018 Harvey, 2008 may be from the Penrose photo that I had edited back to the sighting date. We saw it flying along the track at Little Forest walk and noted the size, petals on the tail and the orange spot between them. This should be inconclusive.
   28 Sep 2020
Or u could believe the person who actually saw it, that’s a thing.
CBrandis wrote:
   29 Sep 2020
That is not how science works 279.
   29 Sep 2020
U think i give a stuff about science? Try explaining dark matter to somebody, the bible is more believable.
CBrandis wrote:
   30 Sep 2020
Dark matter explains the missing mass in the universe and is only postulated by science until there is proof agreed to by other scientists (most anyhow) or another theory that is more acceptable. Cheers
   30 Sep 2020
Good , now I can finally get of this site run by chimps

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Nearby sightings

Page 1 of 1 pages - image sightings only 34 0 34

Orthetrum villosovittatum (Fiery Skimmer) at Berry, NSW - 25 Oct 2020 by Username279 Amenia leonina (Snail-parasite blowfly) at Berry, NSW - 24 Oct 2020 by Username279 Gminatus australis (Orange assassin bug) at Berry, NSW - 23 Oct 2020 by Username279 Oenochroma vinaria (Grevillea Looper) at Berry, NSW - 23 Oct 2020 by Username279 Dolomedes sp. (Fishing spider) at Berry, NSW - 23 Oct 2020 by Username279 Chauliognathus sp. (Soldier beetle) at Berry, NSW - 23 Oct 2020 by Username279 Helpis minitabunda (Threatening jumping spider) at Berry, NSW - 23 Oct 2020 by Username279 Litoria fallax (Eastern Dwarf Tree Frog) at Berry, NSW - 23 Oct 2020 by Username279 CALLIPHORIDAE (Blow fly) at Berry, NSW - 23 Oct 2020 by Username279 Backobourkia sp. (Unidentified Backobourkia orb weaver) at Berry, NSW - 23 Oct 2020 by Username279 Rutilia sp. (Giant bristle fly) at Berry, NSW - 20 Oct 2020 by Username279 Morelia spilota spilota (Diamond Python) at Berry, NSW - 20 Oct 2020 by Username279 Anthela sp. (Genus) (Unknown Anthelid Moth) at Berry, NSW - 20 Oct 2020 by Username279 Amenia (imperialis group) (Snail Parasitic Blowfly) at Berry, NSW - 18 Oct 2020 by Username279 Melanodes anthracitaria (Black Geometrid) at Berry, NSW - 14 Oct 2020 by Username279 Adversaeschna brevistyla (Blue-spotted Hawker) at Berry, NSW - 8 Oct 2020 by Username279 ICHNEUMONIDAE (Unidentified Ichneumon Wasp) at Berry, NSW - 6 Oct 2020 by Username279 THOMISIDAE (Crab spider) at Berry, NSW - 6 Oct 2020 by Username279 Chauliognathus sp. (Soldier beetle) at Berry, NSW - 4 Oct 2020 by Username279 Crematogaster sp. (Cocktail ant) at Berry, NSW - 4 Oct 2020 by Username279 Hemicordulia sp. (an emerald) at Berry, NSW - 28 Sep 2020 by Username279 Paragryllacris sp. (Raspy cricket) at Berry, NSW - 27 Sep 2020 by Username279 Ischnura heterosticta (Common Bluetail) at Berry, NSW - 27 Sep 2020 by Username279 ARANEIDAE (Unidentified Orb weaver) at Berry, NSW - 27 Sep 2020 by Username279 Opisthoncus sp. (Jumping spider) at Berry, NSW - 27 Sep 2020 by Username279 ARANEIDAE (Unidentified Orb weaver) at Berry, NSW - 25 Sep 2020 by Username279 Paropsisterna liturata (Leaf beetle, Button beetle) at Berry, NSW - 24 Sep 2020 by Username279 Aglaopus pyrrhata (A Leaf Moth) at Berry, NSW - 23 Sep 2020 by Username279 Halmus chalybeus (Steel Blue Ladybird) at Berry, NSW - 6 Sep 2020 by Username279 Antestiopsis cederwaldi (Shield bug) at Berry, NSW - 6 Sep 2020 by Username279 Latrodectus hasseltii (Redback Spider) at Berry, NSW - 3 Sep 2020 by Username279 Spilosoma canescens (Dark-spotted Tiger Moth) at Berry, NSW - 2 Sep 2020 by Username279 Dindymus versicolor (Harlequin bug) at Berry, NSW - 22 Aug 2020 by Username279 Oenochroma vinaria (Grevillea Looper) at Berry, NSW - 8 Aug 2020 by Username279
Orthetrum villosovittatum (Fiery Skimmer) at Berry, NSW - 25 Oct 2020 by Username279
Amenia leonina (Snail-parasite blowfly) at Berry, NSW - 24 Oct 2020 by Username279
Gminatus australis (Orange assassin bug) at Berry, NSW - 23 Oct 2020 by Username279
Oenochroma vinaria (Grevillea Looper) at Berry, NSW - 23 Oct 2020 by Username279
Dolomedes sp. (Fishing spider) at Berry, NSW - 23 Oct 2020 by Username279
Chauliognathus sp. (Soldier beetle) at Berry, NSW - 23 Oct 2020 by Username279
Helpis minitabunda (Threatening jumping spider) at Berry, NSW - 23 Oct 2020 by Username279
Litoria fallax (Eastern Dwarf Tree Frog) at Berry, NSW - 23 Oct 2020 by Username279
CALLIPHORIDAE (Blow fly) at Berry, NSW - 23 Oct 2020 by Username279
Backobourkia sp. (Unidentified Backobourkia orb weaver) at Berry, NSW - 23 Oct 2020 by Username279
Rutilia sp. (Giant bristle fly) at Berry, NSW - 20 Oct 2020 by Username279
Morelia spilota spilota (Diamond Python) at Berry, NSW - 20 Oct 2020 by Username279
Anthela sp. (Genus) (Unknown Anthelid Moth) at Berry, NSW - 20 Oct 2020 by Username279
Amenia (imperialis group) (Snail Parasitic Blowfly) at Berry, NSW - 18 Oct 2020 by Username279
Melanodes anthracitaria (Black Geometrid) at Berry, NSW - 14 Oct 2020 by Username279
Adversaeschna brevistyla (Blue-spotted Hawker) at Berry, NSW - 8 Oct 2020 by Username279
ICHNEUMONIDAE (Unidentified Ichneumon Wasp) at Berry, NSW - 6 Oct 2020 by Username279
THOMISIDAE (Crab spider) at Berry, NSW - 6 Oct 2020 by Username279
Chauliognathus sp. (Soldier beetle) at Berry, NSW - 4 Oct 2020 by Username279
Crematogaster sp. (Cocktail ant) at Berry, NSW - 4 Oct 2020 by Username279
Hemicordulia sp. (an emerald) at Berry, NSW - 28 Sep 2020 by Username279
Paragryllacris sp. (Raspy cricket) at Berry, NSW - 27 Sep 2020 by Username279
Ischnura heterosticta (Common Bluetail) at Berry, NSW - 27 Sep 2020 by Username279
ARANEIDAE (Unidentified Orb weaver) at Berry, NSW - 27 Sep 2020 by Username279
Opisthoncus sp. (Jumping spider) at Berry, NSW - 27 Sep 2020 by Username279
ARANEIDAE (Unidentified Orb weaver) at Berry, NSW - 25 Sep 2020 by Username279
Paropsisterna liturata (Leaf beetle, Button beetle) at Berry, NSW - 24 Sep 2020 by Username279
Aglaopus pyrrhata (A Leaf Moth) at Berry, NSW - 23 Sep 2020 by Username279
Halmus chalybeus (Steel Blue Ladybird) at Berry, NSW - 6 Sep 2020 by Username279
Antestiopsis cederwaldi (Shield bug) at Berry, NSW - 6 Sep 2020 by Username279
Latrodectus hasseltii (Redback Spider) at Berry, NSW - 3 Sep 2020 by Username279
Spilosoma canescens (Dark-spotted Tiger Moth) at Berry, NSW - 2 Sep 2020 by Username279
Dindymus versicolor (Harlequin bug) at Berry, NSW - 22 Aug 2020 by Username279
Oenochroma vinaria (Grevillea Looper) at Berry, NSW - 8 Aug 2020 by Username279

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Location information

Species information

  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 1 - 3 Abundance
  • 25 Sep 2020 11:00 PM Recorded on
  • Username279 Recorded by
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