Someone on the FFP site reported seeing grannoms hatch on the Letort. I didn't even know they hatched there. I would expect to see them in the next week or so in Central PA.
I've been seeing a few caddis flying around. I didn't manage to catch any of them but I don't think they were Grannoms. They looked a little smaller than Grannoms. But there are bugs hatching, which is good.
While the name may be occasionally misapplied to a number of different species, I think it is properly applied to the "Brachycentrus" family, which may include several different species.