Prorocopis group (genus)

Ainslie, ACT

Prorocopis group (genus) at Ainslie, ACT - 21 Nov 2019
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Identification history

Prorocopis group (genus) 12 Dec 2019 donhe
Prorocopis group (genus) 12 Dec 2019 ibaird
Erebidae (family) 10 Dec 2019 donhe
Prorocopis euxantha 10 Dec 2019 GlennCocking
Unidentified 5 Dec 2019 jb2602

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21 comments

jb2602 wrote:
   6 Dec 2019
Pronounced vertical lines, sort of like Pheraspis mesotypa
donhe wrote:
   6 Dec 2019
Pheraspis mesotypa is a north Queensland species. Unlikely to have strayed this far south.
GlennCocking wrote:
   8 Dec 2019
I think it's in tribe Nacophorini of the Geos.
GlennCocking wrote:
   9 Dec 2019
Looking again at the palpi, I think it's more likely to be in the Noctuidae/Erebidae. I didn't find it around Prorocopis or Crioa.
ibaird wrote:
   9 Dec 2019
The closest match I found was perhaps Calathusa sp. genus, but none of the examples at the species level online (ALA) seemed to match.
GlennCocking wrote:
   10 Dec 2019
I checked Calathusa too, couldn't find any longitudinal dark line.
jb2602 wrote:
   10 Dec 2019
What about https://www.inaturalist.org/taxa/524800-Calathusa-eremna and the longitudinal lines are crease shadows?
jb2602 wrote:
   10 Dec 2019
How about https://www.inaturalist.org/taxa/355228-Calathusa-basicunea/browse_photos . ?
donhe wrote:
   10 Dec 2019
I like C. basicunea, particulary Ken Harris' photo at
https://www.inaturalist.org/observations/25553123
ibaird wrote:
   10 Dec 2019
Yes I noticed that one, there are a few the same or others like it on the ALA, but there is still no dark longitudinal lines as our specimen has.
GlennCocking wrote:
   10 Dec 2019
Looking again after lightening the image, I think the longitudinal lines are a combination of the antennae and their shadows, and I also think the subtly intricate pattern of Prorocopis euxantha is showing.
ibaird wrote:
   10 Dec 2019
I too lightened the image in Photoshop and magnified it to look for the Prorocopis-like patterning but did not find the intricate detail I was expecting . To my eye the antenna are hidden below the forewing. This general fine patterning scheme is shared to a greater or lesser degree in most the genera which I note Moths of Victoria (Part 8 supporting disc) describe as the 'Prorocopis Group' (including the genera: Crioa , Crypsiprora , Prorocopis , 'NoAvailablegenus, plus several others) which they describe as a notoriously difficult group to identify for which further work is needed to describe and separate species. For example, I could not be sure whether this specimen is P. euxantha or the very similar looking P. transversilinea. While this discussion has earlier ruled out Crioa hades , I note this specimen shares two prominent features with that species: the strong, dark longitudinal lines and the dark parallel tick marks near the tornus on the forewing. Therefore, after looking at this in more detail, I tend to favour C. hades as the ID , but would also support creation of a Prorocopis Group pigeonhole for those specimens (including this one) which I'm pretty sure we are going have difficulty with.
donhe wrote:
   11 Dec 2019
The forewing second line has a clear and characteristic shape, and none of the species yet mentioned have a second line that shape.
If you reorient the photo so that the hind margin is approximately horizontal, then crop to just fit the forewing, and scale that to 200x150 pixels, you can then easily compare the first and second lines with those of other common Catocalinae and Calpinae using the webpages
http://lepidoptera.butterflyhouse.com.au/calp/calp-wings.html
and
http://lepidoptera.butterflyhouse.com.au/calp/cato-wings.html
where you will see it matches none of the 277 species pictured there,
including neither Calathusa basicunea, Calathusa eremna, Crioa hades, nor Prorocopis euxantha.
GlennCocking wrote:
   11 Dec 2019
Ian’s account of the antennae in the photo seems better than mine, so we definitely have to find a species that has a prominent longitudinal dark streak from the base of the forewing to meet with what Ian described as a dark tick towards the tornus. I can see the start of a fine black line from the base of the fw in one of MoV’s Crioa hades photos, as well as the dark tick near the tornus , and both are also visible in many set specimens that I’ve looked at. But it is a very fine line, and it cuts off distinctly at about 1/3 of the wing, never reaching anywhere near the dark tick. Further, Crioa hades is a brown moth, not a grey one as in this photo. And I haven’t found a short dark line diagonally back from the forewing apex in any Crioa hades specimen, as is evident in this photo (and in some Prorocopis). So I’m confident the photo isn’t Crioa hades. But I can’t see the longitudinal dark line in any specimen of the other “Prorocopis group” species, and there are many of them at ANIC. As MoV notes, they are dry country species, and I haven’t found a specimen from in or near the ACT except for Prorocopis euxantha. (Incidentally, the reason I suggested P. euxantha wasn’t that its wing pattern closely matched the photo, but I thought it matched Prorocopis in a general way and P. euxantha was the only likely ACT prospect.) I agree it would be sensible to park this report under Prorocopis group until we know more. At the same time, remember that no match has been found for the dark longitudinal lines and we could be right off course.
GlennCocking wrote:
   11 Dec 2019
Don's comment came in while I was keying mine, and I didn't see before lodging mine
ibaird wrote:
   11 Dec 2019
The Sighting No 3870243 which Don and I called Crioa hades apparently has longitidinal lines (although only opposite the thorax) and the 'tick marks 'I mentioned.
donhe wrote:
   11 Dec 2019
Agreeing with Ian: all 3 of the C. hades specimens at
http://lepidoptera.butterflyhouse.com.au/cato/hades.html,
have the dark line, although only extending about 1/3 from the base, rather than 3/4 like this sighting, but the dark line on the outer half of the forewing of sighting 3870243, which seems to be a distorted outline of Australia, is a good match to that in all 3 of the Coffs webpage specimens of C. hades, whereas for this sighting (4244060) it does not match it, and looks more like the outline of Borneo. Perhaps it is a blow-in.
GlennCocking wrote:
   12 Dec 2019
Ian's and Don's last comments seem to confirm my attempt to say the dark line on Crioa hades is different to that in this photo. Park it as Prorocopis group?
ibaird wrote:
   13 Dec 2019
Yes I. agree, lets park it there.
jb2602 wrote:
   13 Dec 2019
Thanks everyone for all your hard work on this one.
jb2602 wrote:
   16 Aug 2022
For another opinion see: https://inaturalist.ala.org.au/observations/64090541#activity_identification_db18402a-a523-4b15-b2d4-4d0869d55b39

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Nearby sightings

Page 1 of 22 - image sightings only

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Taxeotis intextata (Looper Moth, Grey Taxeotis) at Ainslie, ACT - 21 Nov 2023 by jb2602
Barea confusella (A Concealer moth) at Ainslie, ACT - 20 Nov 2023 by jb2602
Simplicia armatalis (Crescent Moth) at Ainslie, ACT - 20 Nov 2023 by jb2602
Epidesmia hypenaria (Long-nosed Epidesmia) at Ainslie, ACT - 20 Nov 2023 by jb2602
Nacoleia rhoeoalis (Spilomelinae) at Ainslie, ACT - 20 Nov 2023 by jb2602
Monopis icterogastra (Wool Moth) at Ainslie, ACT - 20 Nov 2023 by jb2602
Sinpunctiptilia emissalis (Speedwell Pterror) at Ainslie, ACT - 20 Nov 2023 by jb2602
Sophta concavata (Varied Hookwing) at Ainslie, ACT - 19 Nov 2023 by jb2602

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  • 1 Abundance
  • 21 Nov 2019 10:31 PM Recorded on
  • jb2602 Recorded by

Additional information

  • 12mm to 25mm Animal size

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