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  • About Us
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    New for 2025
    New for 2025 (pdf)
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    Salmon/Steelhead/Spey
    Great Lakes
    Carp
    Bass/Warmwater
    Pike/Muskie/Big Game
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    ----------
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    Redfish/Seatrout/Gulf
    Bluefish/Stripers
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Oct 15, 2018

October Caddis, the Last Big Bug of the Season Paul Mason

I am often asked if I do any type of hunting in the fall. My answer has always been, “no, because the fishing in the fall is too good to miss”. I love the crisp mornings and the colored up foliage on the river’s edge. I have found that fall fishing is very productive as fish strap on the feed bag anticipating the upcoming winter months. I do miss fishing large dry flies as the cold weather kills off the last of the grasshoppers hanging around. However, there is one last big bug hatch that I can use to hunt for surface minded fish, it is the October caddis.


October caddis (Trichoptera: Limnephilidae; Dicosmoecus) are the largest caddis measuring up to 1.25 inches in length with orange bodies and dark wings. Their emergence can start as early as September and have been seen as late as November with October being the most prevalent month, giving them their common name.
During the fall these large fluttering bugs can be seen hopping, skittering and flying over many rivers throughout the Western United States. As a larva, October caddis are case dwellers making their homes from whatever materials they can find. However, unlike most cased caddis the October caddis will abandon their home to drift downstream and find a new home. This makes them vulnerable to feeding fish especially since this drift occurs during the warmest part of the day during summer months. Short fall days bring on the emergence of these large caddis, which at times can be prolific. The peak of this hatch is during the afternoon and early evening hours.
In the book Caddisflies by Gary LaFontaine he says that there are 3 insects that are capable of luring a large trout to feed on the surface. These top three insect hatches are the salmon flies, hexagenia and the October caddis. He feels that the October caddis hatch is the best hatch to catch a really large trout; because of the size of the insect, the water conditions, time of day and that October caddis inhabit waters where really large fish are present.

There are many different techniques that can be used to effectively fish the October caddis hatch especially during the fall. As I said before I love fishing dries, this is my preferred way of fishing the October caddis hatch. The nice thing about fishing this hatch is that you can animate the dry fly. An adult October caddis can be dead drifted, twitch, skated and swung through riffles and pools. Steelhead anglers will often skate October caddis patterns during the fall to catch steelhead on the surface. The October caddis hatch can be fished under the surface as well. Suspending or swinging a caddis emergers during the fall is also a very productive technique. Whatever you preferred method of fishing is, Rainy’s has a large offering of October caddis patterns. Some of my favorites are pictures below.

Next time you are out fishing this fall, be on the lookout for a pumpkin size caddis fluttering around and also be on the watch for large fish hunting them down.

 

Paul Mason grew up fishing the rivers and lakes of Utah, Idaho, & Wyoming. He began tying flies at the age of ten and has pursued his passion of fly fishing for over 20 years. Paul spent his academic career studying fisheries and aquatic science and obtained his Master's degree in fisheries from Utah State University.

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