Baetis mayflies are known to fishermen as Blue-winged Olives or simply Olives. They are first Ephemeropterans to hatch each season, emerging from late February into April. Another group emerges with Sulphurs and Green Drakes in late May. Blue-winged Olives may be seen sporadically in the summer, and a final burst of hatching takes place from mid-October through early November. They are prevalent on most trout streams and especially common on the prime trout waters of Central PA.
There is ample reason, therefore, to include a Baetis Nymph in your fly collection. While they are vital during times of emergence, they function as a great searching nymph any time you need a smaller pattern. They are excellent used in tandem with scuds, sowbugs, and Zebra midges.
Hook: Tiemco #3761, #18-20
Thread: 6/0 light olive for weighted, 6/0 olive for unweighted
Weight: .010" lead wire, if desired
Tails: Olive-dyed mallard flank
Abdomen: Dubbing blend of 40% dark brown rabbit, 40% black rabbit, and 20% olive sparkle yarn
Legs: Olive-dyed mallard flank, tied beard style
Wingcase: Black-dyed quill section
Thorax: Same as abdomen
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©Flyfisher's Paradise 2012