**Caddisfly Species Rhyacophila fuscula (Green Sedge)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Trichoptera (Caddisflies)

» Family Rhyacophilidae (Green Sedges)

» Genus Rhyacophila (Green Sedges)

» Species fuscula (Green Sedge)

Common Names

Match	Common Name
	Green Sedge
	Green Rockworm
	Brown and Green Caddis

Pictures Below ↓

This is the most abundant species of Rhyacophila in much of the East, and every stage can be important to trout. The drifting larvae are important in early Spring, and the emergers and egg-laying adults become important in late Spring and early Summer.

Where & When

Regions: East, Midwest

Time Of Year (?): Mid-May to June

Pictures of 2 Caddisfly Specimens in the Species Rhyacophila fuscula:

Rhyacophila fuscula (Green Sedge) Caddisfly Larva

View 11 Pictures

Collected April 1, 2007 from Mystery Creek #62 in New York
Added to Troutnut.com by Troutnut on April 3, 2007

Rhyacophila fuscula (Green Sedge) Caddisfly Larva

View 11 PicturesI collected this larva and several like it from the same stream and on the same day as this pupa. I suspect they're the same species.

Collected June 5, 2005 from the Long Lake Branch of the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006

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Jargon Defined:

Larvae: Many classes of aquatic insects, such as caddisflies, midges, craneflies, dobsonflies, alderflies, and many more, are known as "larvae" rather than "nymphs" in their juvenile stages. They have mostly soft bodies rather than hard exoskeletons. These insects also advance through a "pupa" stage before reaching adulthood.

Pupa: Any insect which spends most of its juvenile lifetime as a larva first becomes a pupa for a time before emerging as a fully grown adult. Depending on the species, the pupal form can be very important for fly fishermen to imitate.

Useful References:

LaFontaine, Gary. 1981. Caddisflies. The Lyons Press.

Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.