Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin

Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Middle Fork Snoqualmie

From the Middle Fork Snoqualmie River in Washington

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

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27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.

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chuck

This topic is about the Arthropod Order Araneae

Some species of spiders actually live underwater, but they seem less common than those which live on land near the water. From a fly angler's perspective, then, spiders are mostly important as terrestrials.

Because of their relatively stable life cycles, there don't seem to be any points at which spiders become available to trout en masse. But they're undoubtedly a part of the mixed bag of summer terrestrials.

Cspear
Posts: 1

Cspear on Aug 20, 2008August 20th, 2008, 5:24 am EDT

I have these Arthropod Order Araneae (Spiders) all over my property last weekend in West Kill NY. Are they poisonous? Do they live in the creek? Are they coming out of the creek to hatch because each one had a wed and egg sacks inside. They are big! Any thing interesting or warnings about these, I'd like to know.

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Aug 20, 2008August 20th, 2008, 9:03 am EDT

Cspear,

Sounds like one of the nursery web spiders (Pisuradae). It's just a guess, but try googling Dolomedes (fishing spider).