For BWO's / Baetis, I tie a lot of different style patterns. I prefer nymphs and emergers over dries. I use CDC, Swiss Straw, Medallion Sheeting,webby portion of a Dun Hen neck, Snow Shoe Hare, Poly, Coastal Deer Hair, Widow's Web, Zelon, Sparkle Emerger Yarn, matching duck quill sections, closed cell foam, hackle tips and a few other materials I have probably forgotten - for winging...
That being said, here are some
of the patterns I use for this complex:
My favorite pattern is the Bat Wing Baetis / BWO. This is the PMD version of that fly...
PMD BAT WING EMERGER
PMD BAT WING EMERGER (front view)
, is a very simple tie, using a sparkle emerger yarn wing for an emerging Baetis/BWO, that is extremely effective here in the Eastern Sierras:
Hook: Diiachi 1130, TMC 2487, # 16-#22
Thread: Gordon Griffiths grey or olive
Tail/shuck: Olive brown ice dub
Abdomen: Stalcup’s BWO goose biot
Rib: Lagartun fine gold wire
Thorax: Arizona Peacock hares ear
Wing: White Sparkle Emerger Yarn or Grey Sparkle Emerger Yarn