Arctopsyche grandis in waterton canyon

This topic is about the Caddisfly Species Arctopsyche grandis

Gary LaFontaine regarded this species as very important in the West, and wrote of it in Caddisflies:

A. grandis is one of those special insects that is worth making the focus of a fishing trip because it gets the best trout in a river interested in feeding.

It owes much of its importance to its large size. Read more...

Arctopsyche grandis (Great Gray Spotted Sedge) Caddisfly Larva (14 Pictures)

The Discussion

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Krikut	May 16th, 2016, 11:17 pm
Posts: 1	Discovered one of these guys or (gals?) back on March 20 of this year up in Waterton Canyon. He was so chunky I first thought it was a small hellgrammite (I grew up in Virginia, where the hellgrammite was the bug of choice in most smallmouth rivers). This particular one measured about half an inch and had a bright green tail/foot segment. I'm curious if you guys have a favorite immitation? Thanks!
	Troute diem

Bnorikane	May 17th, 2016, 10:29 pm
Colorado Posts: 15	They were spotted in Colorado and discussed a few years ago. http://www.troutnut.com/topic/8547/Arctopsyche-Grandis