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.

For how many years, I wonder, have these huge slabs of rock sheltered wild brook trout?

From Mystery Creek # 89 in New York

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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Female Neoleptophlebia Mayfly Dun Pictures

I'm just guessing Neoleptophlebia instead of Paraleptophlebia on this one because I tended to find more of their nymphs in the area, but take that with a grain of salt.

Ruler view of a Female Neoleptophlebia (Leptophlebiidae) Mayfly Dun from the West Branch of the Delaware River in New York The smallest ruler marks are 1 mm.

Lateral view of a Female Neoleptophlebia (Leptophlebiidae) Mayfly Dun from the West Branch of the Delaware River in New York

Female Neoleptophlebia (Leptophlebiidae) Mayfly Dun from the West Branch of the Delaware River in New York

Dorsal view of a Female Neoleptophlebia (Leptophlebiidae) Mayfly Dun from the West Branch of the Delaware River in New York

Ventral view of a Female Neoleptophlebia (Leptophlebiidae) Mayfly Dun from the West Branch of the Delaware River in New York

This mayfly was collected from the West Branch of the Delaware River in New York on June 1st, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

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