The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
That said, I'd also have to say that my earlier guess about Paraleptophlebia being a candidate for DarkDun's March/October hatch is unfounded. A quick check of the NC collecting record shows a complete absence of Paraleptophlebia species. I find this surprising, as there are a number of Paraleptophlebia spp. that range into the Southeast. Perhaps the NC collecting record is relatively incomplete, but without any evidence of paraleps in the record, I humbly and respectfully withdraw my earlier speculation! :)
I wasn't aware that part of that disseration was available Online. How long has it been there?