Quote Originally Posted by whatfly View Post
Tie an E/C Caddis with the same sort of contrasting colors, but rarely fish the Comparadun. Have never noticed that it makes much of a difference.
An Elk Hair Caddis is an adult caddis - fully emerged.

A Sparkle Dun represents the inhibited emergence of a mayfly - in this case, a PMD. The shuck of the PMD is darker than the fully emerged sub-imago. That is why I have the darker trailing shuck and the rear abdomen.