This pattern worked well for my fishin' pards and me this spring.
It worked when the Baetis were about and when they weren't.
Hook: Scud Hook Of Choice
Size: 16 - 22
Thread: Olive Dun 6/0 or 8/0 UNI-Thread (Tyers Choice)
Abdomen: Tying Thread
Rib: Black Ultra Hair
Wing Bud: White Antron
Thorax/Head: Tying Thread
Optional: UV Finish and/or Sally Hansen Hard as Nails®