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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.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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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Posts: 19
Pilonm on Aug 30, 2015August 30th, 2015, 9:32 am EDT
Hello all,

Here is a specimen found near my house (near Vermont). Would it be possible to identify the genus and the species? I'm suspecting Hellinsia sp.

Thanks for helping me :)


Quebec, Canada
Healdsburg, CA

Posts: 344
Millcreek on Aug 30, 2015August 30th, 2015, 10:08 am EDT

It certainly appears to be a Hellinsia sp. Here's a website that should help you get a species. http://mothphotographersgroup.msstate.edu/slow.php?plate=15&page=2&sort=h

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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