What was that ornately sculptured mystery object?
It was the egg of the Question Mark butterfly, Polygonia interrogationis. I admit, I had an advantage over you folks. I identified the species watching the adult butterfly before she laid that egg on an elm leaf.
Although several of you put in solid guesses, I am awarding no points for this week’s mystery. The single correct entry- by lepidopterist and blogger Chris Grinter- provided no supporting information as per our more stringent rules, and the entries with supporting info didn’t arrive at the correct ID.
But don’t feel bad. This was an especially hard mystery, and one that I wouldn’t have gotten myself had I not spied the egg-layer in action.