I guess the readers correctly identified this morning’s butterfly as the Comma Butterfly, Polygonia c-album (also known as the “anglewing” for obvious reasons), though I don’t know how it got that weird Latin binomial. It’s remarkably cryptic, and here’s the picture reader John took when the beast was removed from the background:
The white comma-shaped mark on the underwing is apparently diagnostic.
Here’s the dorsal side of the wings (from the Wikipedia entry), which aren’t cryptic at all. One wonders why one side of the wings are so colorful and the other cryptic. If it were poisonous or toxic, and the color was “aposematic” or warning coloration, then both sides of the wings should be colorful. Perhaps it keeps the wings open to attract mates, and folds them to camouflage itself. In that case, though, the females should be completely cryptic, as there’s no advantage to them being bright (I’m assuming males do the displaying). I found no evidence, though, for such sexual dimorphism. I’m sure at least one reader knows of a good theory for this.