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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

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 Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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 Species Paragnetina media (Embossed Stoneflies)

This is one of the major species of the Perlidae family, perhaps the most important in the East.

Where & when

Time of year : Late June through late July

In 67 records from GBIF, adults of this species have mostly been collected during June (33%), July (24%), May (21%), August (9%), and April (6%).

In 10 records from GBIF, this species has been collected at elevations ranging from 600 to 3802 ft, with an average (median) of 1148 ft.

Species Range

Hatching behavior

Time of day : Early nighttime

Egg-Laying behavior

Time of day: Dusk

Specimens of the Stonefly Species Paragnetina media

1 Female Adult
3 Nymphs

Start a Discussion of Paragnetina media


Stonefly Species Paragnetina media (Embossed Stoneflies)

Species Range
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