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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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

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

Start a Discussion of Mystacides alafimbriata

References

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

Taxonomy
Species Range
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