This common name refers to only one species.
These are pretty much always called American Grannoms.
Brachycentrus americanus (American Grannom) Caddisfly Larva
View 13 PicturesBoth the genus ID (Merritt & Cummins) and species ID (Flint 1984) are pretty confident for this larva, a nice example of a common western caddisfly. It was by far the most abundant insect in my kicknet sample on this trip, and many of the rocks in the fast riffle where I sampled had dozens of these larvae clinging on.
Collected July 6, 2020
from in Added to Troutnut.com by on July 12, 2020