Subject: Pupa identification
Geographic location of the bug: Canberra Australia
Time: 05:14 AM EDT
Your letter to the bugman: Been trying to identify this but coming up with no idea. It looks like a tent caterpillar web but not their pupae…
How you want your letter signed: Thanks
We wish your image had more critical detail, especially of the individual pupae. We do not believe these pupae belong to a caterpillar. We will continue to research this matter, but in the meanwhile, we are posting your request as Unidentified.
Update: Thanks to a comment from Richard Stickney, we believe these might be the pupae of the Imperial Jezebel or Imperial White, Delias harpalyce, which is pictured on The Victoria Museum site.