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.

Looking across Island Lake toward the Titcomb Basin—one of the popular crown jewels of the Wind River Mountains

From Island Lake in Wyoming

Stream photos

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Lateral view of a Coleoptera (Beetle) Insect Larva from Sears Creek in Washington

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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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?Reliable Taxonomic keys to Species Level?

Fish4va
lansdale, PA

Posts: 1

Fish4va on Mar 31, 2008March 31st, 2008, 7:43 am EDT

I am looking for reliable keys, preferably published books or articles, that can be used to identify aquatic inverts to species level. I am currently using such sources as Pennak, Wiggins and Merritt & Cummins for both work and play. These sources are great at getting to genus level identification.

Does anyone have any suggestions?