The little Blue Winged Olive (BWO) mayfly of the family baetidae is arguably the most important moving-water mayfly hatch for both the trout and the fly angler. Capable of producing two generations per year, the BWO's high level of activity both as a nymph and as an adult make it both available and vulnerable to feeding trout. While patterns such as the RSII, Barr's Emerger, and Greg's Emerger can be used to imitate the wet emerger, the BWO Sparkle Dun stands alone as the go-to pattern to cover the dry emerger.
Dry/Wet: Dry
Fly Category: True-Fly Pattern
Family: Mayfly
Species: Blue Winged Olive
Life Stage: Emerger, Cripple, Adult
