The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
This one survived several days in an aquarium before being photographed. Leptophlebia cupida is known as a durable species.
I'm trying to try a similar specimen (link to the next specimen) and see how that works.
In angling books, Leptophlebia mayfly nymphs have a reputation as poor swimmers. In reality, they're very adept swimmers, much moreso than most other mayfly nymphs categorized as "crawlers."
This mayfly was collected from the Namekagon River in Wisconsin on February 4th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.