It's the time of year when fly fishers get a little giddy about pursuing hatches of aquatic insects on their favorite waters. The stonefly hatch starts during the late spring, early summer season ...

With spring arriving quickly in Utah, fly fishermen across the state need to be prepared with these go-to patterns in their boxes.

The skwala stonefly hatch on the Yakima River isn’t anything to shout about. No clouds of insect plastering pickup windshields. Even the fly shops don’t pump it up that much compared with ...

PA Outdoor Life Tying a Stone Fly nymph with Tom Lienhard Hand crafted trout flies tied by an expert.

— Mike Marcum, StoneFly Fly Shop Boulder River, near Big Timber: It's low, clear and fishing well. Hopper patterns are still a good bet. Foam hoppers are working.

Chris Bradley, who is co-owner of The Stonefly Fly Shop in Butte, says the elk hair caddis remains one of the most popular fly patterns since it was first designed more than 50 years ago.

Head/wing: Elk hair tied bullet-style. Legs: Rubber legs. Glenn West has been fly-tying for 50 years, guiding anglers for 25 years and has been creating fly-fishing artwork for 15 years.

Chris Bradley, who is co-owner of the Stonefly Fly Shop in Butte, says the elk hair caddis remains one of the most popular fly patterns since it was first designed more than 50 years ago.

One of Montana's legendary trout flies, the girdle bug, was designed to imitate a large stonefly nymph, or "hellgrammite," as the local anglers on the Big Hole River call the ...