Insects
Moths (Lepidoptera)
Geometer moths (Geometridae)
Sighting 4632064

Idaea (genus)

A Geometer Moth at Narangba, QLD

Idaea (genus) at Narangba, QLD - 27 Dec 2024 06:50 AM
Idaea (genus) at Narangba, QLD - 27 Dec 2024 06:50 AM
Idaea (genus) at Narangba, QLD - 27 Dec 2024 06:50 AM
Idaea (genus) at Narangba, QLD - 27 Dec 2024 06:50 AM
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Identification history

Idaea (genus) 5 Apr 2025 WendyEM
Idaea inquinata 4 Apr 2025 WendyEM
Idaea (genus) 8 Jan 2025 donhe
Unverified 27 Dec 2024 trevorpreston

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8 comments

ibaird wrote:
   27 Dec 2024
Idaea (genus)?
donhe wrote:
   29 Dec 2024
BOLD Idaea sp. 14 ?
WendyEM wrote:
   8 Jan 2025
this looks like Moths of Vic Part 3 - Idaea sp(1) ~ I. inquinata from Europe
ibaird wrote:
   4 Apr 2025
Similar, but seems to lack the same marginal black dots on the forewing and hindwing?
https://www.inaturalist.org/taxa/466365-Idaea-inquinata
Looking at BOLD Systems 4 'Idaea Australia' there a large number of named and un-named possibilities in the genus.
I'm nit sure it matches BOLD Idaea sp. 14 given that specimen's large black dot.
WendyEM wrote:
   4 Apr 2025
I am confused about what dots are lacking. Above moth has dots along termen of fore and hindwing, and lots of fringe beyond as it is not worn. Have a look at images on 2 CD pages of Moths of Victoria Part 3, 2nd Ed Idaea sp(1). The Australian distribution map of the iNat specimens suggests the recent introduction theory. Compared to native Idaea sp iNat maps I have looked at.
donhe wrote:
   4 Apr 2025
This lacks the dark shading along the forewing median band which I. inquinata has.
WendyEM wrote:
   4 Apr 2025
the intensity of bands & amount of shading is variable between individuals. This can be seen in the iNat species 80 of which were IDed by Axel Kallies.
ibaird wrote:
   4 Apr 2025
Looking at the photos of Idaea inquieta (ie. 'Idea sp. (1)') on the supporting disc to Moths of Victoria. I think the dark lines on the forewing on the basal half of the forewing meet the costa at a distinctly different angle than we see in this specimen. Also, while the sexes are apparently different in this respect, I do not see here the pale colour on the head between the antennae of the male of I. inquieta.

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