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Medium Grannoms



This common name refers to only one species.

Caddisfly Species Brachycentrus americanus

These are often called Medium Grannoms.
Brachycentrus americanus (American Grannom) Caddisfly LarvaBrachycentrus americanus (American Grannom) Caddisfly Larva View 18 PicturesThis species of Brachycentrus was extremely common in mid-September kick net samples in the Yakima canyon.
Collected September 12, 2020 from in
Added to Troutnut.com by on September 19, 2020
Female Brachycentrus americanus (American Grannom) Caddisfly AdultFemale Brachycentrus americanus (American Grannom) Caddisfly Adult View 1 PicturesSize 11 mm. Prior to this photo the specimen dropped its large egg mass that was a very dark (almost black) olive sphere almost twice the diameter of the abdomen. Notice the abdomen visible through the wings is both thickened and shortened post egg drop.
Collected October 15, 2011 from in
Added to Troutnut.com by on October 21, 2011
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