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.

Stream photos

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Female Skwala (Large Springfly) Stonefly Adult Female Skwala (Large Springfly) Stonefly Adult

Lateral view of a Female Skwala (Perlodidae) (Large Springfly) Stonefly Adult from Mystery Creek #308 in Washington

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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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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.