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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
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.

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington
This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this 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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Ranatra Water Scorpion Adult Pictures

Here's a big water scorpion (no relation to actual scorpions). These guys are just about the most sinister-looking creatures you could find, and what's especially creepy is that they can come up out of the water and fly around, as I learned when one left my aquarium and buzzed my head while I was peeking into the microscope at a mayfly nymph.

This water scorpion was collected from unknown in Wisconsin on March 10th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Adult

Genus ID
1 replies
Posted by DMM on Jan 18, 2007
Last reply on Jan 18, 2007 by DMM
Ranatra

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Ranatra Water Scorpion Adult Pictures

Collection details
Location: unknown, Wisconsin
Date: March 10th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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