Shark's Caddis Larva

Came across an interesting pattern recently on Global Fly Fisher called Shark's caddis. I thought that with a few minor tweaks it could be a killing fly as applied to Euro-nymphing techniques.

Some of the changes I made:
-Adding a ribbed shellback (either scud back or magic foil)
-Mark the front 2 or 3 thoracic segments with brown permanent marker
-Fox squirrel, touch-dubbed for the thorax
-A layer of .015 lead for an underbody

Otherwise, the tying technique is virtually the same. Also, you could add a touch of Prism or Ice dubbing into the fox squirrel for a little extra eye catching sparkle. I particularly like the segmentation of this fly, which is important when trying to imitate the naturals. The rabbit that is wound into the antron abdomen gives this fly a nice slightly hairy effect. It is important to use the rabbit very sparingly. Too much and it would overpower the segmented abdomen. I would tie these on a barbless sedge hook in the 10-16 size range.

This is what the dried fly looks like


The wet version




Under water