Insect Order Trichoptera (Caddisflies)

The large caddisfly case (really less than 1/2 inch) is a Brachycentridae larva. The other cases are actually the protective sheaths of black fly (Simuliidae) pupae. The two antler-like pieces sticking out of each one are not legs, but antennal sheaths.

In this picture: True Fly Family Simuliidae (Black Flies) and Caddisfly Family Brachycentridae (Apple Caddis and Grannoms).

Cased caddis larvae blanket this section of stream bottom.

In this picture: Insect Order Trichoptera (Caddisflies).

An Ephemerella subvaria nymph clings to a white rock in the foreground, and there are other nymphs in the background.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies).

Several Baetid mayfly nymphs cling to this rock. There are also some clumps of small stones which hold strong caddisfly larvae.

In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Family Baetidae (Blue-Winged Olives).

A large crayfish lurks under a log which is home to several mayfly nymphs and caddisfly larvae.

In this picture: Arthropod Order Decapoda (Crayfish), Insect Order Ephemeroptera (Mayflies), and Insect Order Trichoptera (Caddisflies).

Several well-camouflaged Ephemerella mayfly nymphs cling to this log, and a few cased caddisfly larvae cling to the plant in front of it.

In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs).

There are several species of caddisfly larvae and Ephemerella nymphs on this rock.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies).

Several caddis larvae cling in the current amongst the debris collected on an underwater alder branch.

In this picture: Insect Order Trichoptera (Caddisflies).

A variety of cased caddisfly larvae, probably mostly Neophylax, have clustered along the backside of a rock in fast water. There seem to be some Helicopsychidae larvae clustered along the bottom, and a few other taxa are mixed in. It's interesting that several larvae have especially large stones placed over the front openings of their cases, perhaps to block the case off for pupation.

It does seem to be the wrong time of year for Neophylax to be pupating, but that was the ID given for one of these which I collected and photographed up close.

In this picture: Caddisfly Genus Helicopsyche (Speckled Peters) and Caddisfly Genus Neophylax (Autumn Mottled Sedges).