The moth emerged on November 2nd. It looked much like my previously reared Pero:
but with a white spot on each forewing.
The current specimen was reared on Buddleia davidii
--quite different from the carrot tops that fed its predecessor. As far as I could tell, it ate only the flowers. During the last few weeks of the larval stage, the buddleias had stopped blooming, and only dried inflorescences were available.