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.

Cedar sweepers line the fertile spring creek headwaters of a famous trout stream.

From the Bois Brule River in Wisconsin

Stream photos

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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.

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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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Caddisfly Species Mystacides alafimbriata (Black Wing Long-Horned Sedges)

Where & when

Time of year : Late June to early July

Preferred waters: Lakes, ponds, and slow rivers

This is the main western specis of Mystacides, and it can be very important.

Species Range

source

Hatching behavior

Time of day : Morning

Egg-Laying behavior

Time of day: Morning

Larva & pupa biology

Current speed: Slow

Substrate: Vegetation

Specimens of the Caddisfly Species Mystacides alafimbriata

1 Adult

Mystacides alafimbriata (Black Wing Long-Horned Sedge) Caddisfly Adult

1 Picture

Mystacides alafimbriata (Leptoceridae) (Black Wing Long-Horned Sedge) Caddisfly Adult from Ninepipes Reservoir in Montana

Collected June 24, 2005 from Ninepipes Reservoir in Montana

Added by Bnewell on June 30, 2011

Collected June 24, 2005 from Ninepipes Reservoir in Montana and added by Bnewell on June 30, 2011

Start a Discussion of Mystacides alafimbriata

References

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.
Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.