Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
This ia a very tiny (hook size 22-24) dun. The pictures are terrible, but it's very fragile and it's one of the first adult mayflies I ever photographed.
This mayfly was collected from unknown in Wisconsin on April 30th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.