**Caddisfly Genus Hesperophylax (Silver Striped Sedges)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Trichoptera (Caddisflies)

» Family Limnephilidae (Northern Caddisflies)

» Genus Hesperophylax (Silver Striped Sedges)

Species in Hesperophylax
Hesperophylax designatusSilver Striped Sedge	1	1

5 species aren't included.

Common Names

Match	Common Name
	Silver Striped Sedges
	Northern Caddisflies

Pictures Below ↓

These are very large caddisflies, up to 1.3 inches long as adults.

Where & When

Time Of Year (?): Emergence in summer, egg-laying in fall

Hatching Behavior

Time Of Day (?): Nighttime

Prior to emergence the pupae gather on certain bolders, which concentrates their emergence into specific feeding lanes. They are just the sort of large insect that nocturnal trout like to eat.

Hesperophylax Fly Fishing Tips

LaFontaine notes in Caddisflies that the adults are worth imitating, and they make a good searching pattern (Searching pattern: Any artificial fly pattern used when trout that aren't feeding selectively on anything in particular. A searching pattern may be an attractor or an imitation of something specific that the fish might favor even though it's not currently hatching.), but he does not give specifics about their behavior.

Pictures of 1 Caddisfly Specimen in the Genus Hesperophylax:

Female Hesperophylax designatus (Silver Striped Sedge) Caddisfly Adult

View 1 Pictures

Collected September 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on September 14, 2011

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Jargon Defined:

Emergence: The transformation of a nymph or pupa into the adult winged stage of an insect. The term may refer to the emergence of an individual, or the daily or yearly event in which all individuals of a species emerge.

Pupae: 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.

Searching pattern: Any artificial fly pattern used when trout that aren't feeding selectively on anything in particular. A searching pattern may be an attractor or an imitation of something specific that the fish might favor even though it's not currently hatching.

Useful References:

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

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