Rhyacophila Larva?

 

 

Green Larva~http://www.westfly.com/entomology/caddis/green.shtml

 

Picture casting just  above riffles and tumbling a juicy, green morsel down through the holding water, past some pocket water and into the drift. Short casts at first, covering the water before you. Incrementally you work the line out and watch for the darting take, the stop in the line and the set…the moment realized. 7″ or 17″ part of the thrill is know the fish took your creation as it tumbled down through the aerated water.

A Green Rockworm pattern is a juicy larva of the caddis genus~~Rhyacophila. It has no case, so it is like lobster or shrimp without the shell. By the time you have celebrated Mom’s Day or planted your string beans and peas, caddis are percolating in your river. You can add bead head pupa patterns and Elk Hair caddis to the mix as the season or hatch progresses. All these patterns can be tied in larger sizes of size 8 to 14, which makes for comfortable tycing, casting, fishing and catching…what more could you ask for.  Green to greenish tan, segmented, legs and not to fat a head for the larva will do the job. V Rib, beads, whatever you use add segmentation and a bit of curve. The Czech Nymph lends itself well to caddis larvae. 

Green Czech Nymph

Larva pic from WorleyBuggerFlyCo.

http://www.worleybuggerflyco.com/Yakima_River_Hatches.htm    

Czech Nymph Pattern at www.glennriver.com

(See Comment  by Guy Stottlemyer; I made his text bold in two places )