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.

Inlet of Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.

10 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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Updates from October 21, 2011

Closeup insects by Entoman from the Susquehanna River and the Fall River in Pennsylvania and California

Male Heptagenia culacantha Mayfly Spinner

1 Picture

Male Heptagenia culacantha (Heptageniidae) Mayfly Spinner from the Susquehanna River in Pennsylvania

This photo was provided by guide Eric Naguski along with the following comments, "I took this photo just upstream of Three Mile Island on the east shore of the Susquehanna River just below where the Swatara Creek enters. The Susquehanna is not an easy river to sample for bugs in my opinion. It is very large and pushes a lot of water. Especially in the spring when you would collect mature culacantha nymphs. And I don't believe that there are a ton of these Heptageniids around. Also the people who are doing most of the sampling like myself are doing so for water quality monitoring work so they only take the specimens down to genus-level taxonomy".

Collected October 21, 2011 from the Susquehanna River in Pennsylvania

Added by Entoman on February 9, 2012

Collected October 21, 2011 from the Susquehanna River in Pennsylvania and added by Entoman on February 9, 2012

Female Paraleptophlebia debilis (Mahogany Dun) Mayfly Dun

3 Pictures

Female Paraleptophlebia debilis (Leptophlebiidae) (Mahogany Dun) Mayfly Dun from the Fall River in California

Size: 9mm. These photos really highlight the brown pigmentation of the wing venation, but in the hand the wings look to be a uniform smokey gray. - Entoman

Collected October 21, 2011 from the Fall River in California

Added by Entoman on February 4, 2012

Collected October 21, 2011 from the Fall River in California and added by Entoman on February 4, 2012