Finally found the first SHB today while inspecting my daughter's hives. Found about 4 beetles. The hives look very healthy, full of bees. No negative signs of varroa. Found some varroa in drone pupa, but no more than one mite in a cell.
I noticed patches of open pupa that had been chewed. Good sign. Then I noticed open pupa that was dark and obviously decaying. Right then a larva popped it's head up. I'm assuming it's SHB?