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.

I like this one. Glacial river, taiga, tundra, and the perpetual ice cover of a massive high ridge dozens of miles away in the Wrangell Mountains.

From the Copper River in Alaska

Stream photos

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

9 Recently Added Photos

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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Stonefly Genus Megaleuctra (Needleflies)

Where & when

In 11 records from GBIF, adults of this genus have been collected during April (27%), May (27%), June (27%), March (9%), and July (9%).

In 4 records from GBIF, this genus has been collected at elevations of 2001, 3501, 3501, and 3658 ft.

Genus Range

source

Map of specific collection sites

Specimens of the Stonefly Genus Megaleuctra

1 Adult

Megaleuctra stigmata (Little Black Needlefly) Stonefly Adult

3 Pictures

Megaleuctra stigmata (Leuctridae) (Little Black Needlefly) Stonefly Adult from Talking Water Creek in Montana

This is one of rarest stoneflies in western Montana. It is a bit unusual that it is fairly abundant in a handful of streams that empty into the east side of Flathead Lake. A very beautiful bug.

Collected May 17, 2005 from Talking Water Creek in Montana

Added by Bnewell on June 28, 2011

Collected May 17, 2005 from Talking Water Creek in Montana and added by Bnewell on June 28, 2011