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Ribbed case moth

?Hylarcta nigrescens


Super cute about 10mm tall case made with regular scale shapes around a small cone.


On eucalyptus leaf in a local nature and games reserve.


Maybe Ribbed Case Moth - Hyalarcta nigrescens or may never know. Many of these are adept at utilising whatever plant they are currently occupying although the beginnings of ribs seem to be there.
Another example of H.nigrescens with debris on its case..


Neil Ross
Neil Ross a year ago

Cool spotting, Mark. Very Disneyesque! That would make someone a lovely hat! ;)

Mark Ridgway
Mark Ridgway a year ago

Done Ava..
and I'm going with Hyalarcta nigrescens after reviewing all bag moths known in the area (yet again lol)

Ava T-B
Ava T-B a year ago

Hey Mark, Please consider adding this spotting to the Animal Architecture mission at

Mark Ridgway
Mark Ridgway 2 years ago

Thanks Jae.
Also thanks Orni for the suggestion but if I can't see the head pattern it's not certain. H.nigrescens is definitely a good chance though.

Jae 2 years ago

Wonderful spotting, Mark.

Mark Ridgway
Spotted by
Mark Ridgway

Ferntree Gully, Victoria, Australia

Spotted on Mar 27, 2021
Submitted on Mar 27, 2021

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