Insect Order Ephemeroptera (Mayflies)

Two Ephemerella mayfly nymphs share a piece of wood with two Taeniopterygidae stonefly nymphs.

In this picture: Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs) and Stonefly Family Taeniopterygidae (Willowflies).

Here's the surface of the river viewed from below during a Tricorythodes spinner fall. Several dead spinners are visible.

In this picture: Mayfly Genus Tricorythodes (Tricos).

There are a couple Epeorus mayfly nymphs clinging to this rock. One interesting thing I've noticed is that even though the stream has a lot of clingers, they rarely show up in my photos, and I've started paying more attention to the river bottom while I'm fishing I've noticed that clinger nymphs generally see or feel me coming and scurry to the undersides of their rocks before I can get in picture range. I think I have the same problem with stoneflies.

In this picture: Mayfly Genus Epeorus (Little Maryatts).