Landscape & scenery photos from the Yakima River
Date AddedJul 24, 2017
CameraCanon EOS 7D Mark II
Yakima River from WA highway 10 near Teanaway, with rafters floating down.
Date AddedJul 24, 2017
CameraCanon EOS 7D Mark II
Date AddedOct 1, 2017
CameraNIKON 1 AW1
20" rainbow caught swinging a sculpzilla through a deep riffle
Date AddedOct 1, 2017
CameraNIKON 1 AW1
Date AddedApr 11, 2021
CameraNIKON 1 AW1
Closeup insects from the Yakima River
Male Onocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly Adult
View 15 PicturesI first just assumed this was Dicosmoecus based on anglers' conventional wisdom since it's a large orange "October caddis," but Creno set me straight. I should have keyed it out. After another look under the microscope, it lacks an anepisternal wart on the mesopleuron (Mesopleuron: The side of the insect mesothorax, and the part to which the fore wings are attached in mayflies.), which rules out Dicosmoecus. The midtibiae have 2 apical (Apical: Close to the apex; tip or end.) spurs and 1 pre-apical (Apical: Close to the apex; tip or end.) spur, and from there the color pattern of the wing points to Onocosmoecus. The location then narrows the species to unicolor. Male Acentrella insignificans (Tiny Blue-Winged Olive) Mayfly Dun
View 11 PicturesThis specimen emerged indoors from nymphs I had collected, then partly molted into a spinner but got stuck along the way. I've included a couple pictures showing some of the spinner colors. It got a bit waterlogged after emerging, so the wings aren't in perfect shape, but it still represents one of two Baetids that were emerging and drawing trout to rise on the Yakima. Based on body size and shape, it is most likely the same species as this nymph.
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