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.

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

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.

Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Updates from April 23, 2007

Photos by Troutnut from Mystery Creek #62 in New York

Closeup insects by Troutnut from the West Branch of Owego Creek and Factory Brook in New York

Belostoma flumineum (Electric Light Bug) Giant Water Bug Adult

14 Pictures

Giant water bug. This dangerous aquatic predator belongs to the species Belostoma flumineum, in a family known as the "toebiters"

Artistic view of a Belostoma flumineum (Belostomatidae) (Electric Light Bug) Giant Water Bug Adult from the West Branch of Owego Creek in New York

I'm glad I finally got one of these Belostoma water bugs under my good camera. I had been hoping to get one in my kick-net samples for a while with no luck, but I ended up finding this one drifting midstream just below the surface while I fished. I have frequently seen water scorpions do that, too, and I'm beginning to suspect that is a common situation travel for these large Hemiptera bugs, and perhaps the way trout are used to seeing them.

Collected April 23, 2007 from the West Branch of Owego Creek in New York

Added by Troutnut on April 24, 2007

Collected April 23, 2007 from the West Branch of Owego Creek in New York and added by Troutnut on April 24, 2007

Nigronia serricornis (Fishfly) Hellgrammite Larva

13 Pictures