And interesting too. While a freshly laid egg can be seen in an outer, still uncompleted cell, a 3rd or 4th instar larva is already growing in a more inner, nearly finished cell.
Despite the somewhat treacherous variability of P. fuscatus, I think this species can be confidently ruled out this time, leaving only P. metricus. But let's wait for Dr. Buck's confirmation - or correction.
Approximate date of "capture" (at least early/mid/late month) would be useful.

that's where i was leaning...