Here are two out of three patterns I use when Micro-Caddis are present. Almost all Micro - Caddis are smaller than # 18, with the majority being # 22 - # 24...and smaller. Their primary colors are brown, olive and yellow. The trick to knowing they are present, is to check the stream side vegetation where they will be scurrying about like crazy...
BROWN MICRO – CADDIS
THREAD: Lagartun 74 Denier, Rusty Brown or Gordon Griffith 14/0 Sheer, Brown - ( Yellow for body / Grey head for Yellow version)
HOOK: TMC 2488 or 2488H #20 – # 24
TAG: Gold Holo Tinsel - ( Silver for Yellow version)
OVER ABDOMEN: Tan Micro Tubing – (Clear for Yellow version)
WINGS: Brown Zelon, strand split ( Dun for Yellow version)
THORAX: Brown Ostrich Herl – ( Grey for Yellow version)
They are here in great numbers in August and September...they are in many other places too...
The Lower Owens River, CA...
OLIVE MICRO – CADDIS
THREAD: Lagartun, 74 Denier, Olive or Gordon Griffith 14/0 Sheer, Olive
HOOK: TMC 2488 or 2488H, # 20 – #24
TAG: Green Holo Tinsel
OVER ABDOMEN: Olive Micro Tubing
WINGS : Olive Zelon. strand separated
THORAX: Sm. Olive Ostrich Herl
My son Michael in the East Walker River. Another good location for Micro-Caddis...
Try some...they work real GOOD!!!