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TaxonomyBrowse
Info
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Species Hesperophylax designatus - Silver-striped Sedge

Great Silver-striped Sedge - Hesperophylax designatus Great Silver-striped Sedge - Hesperophylax designatus Giant Golden Caddis - Hesperophylax designatus Hesperophylax designatus Silver-striped Sedge - Hesperophylax designatus Caddisfly, dorsal - Hesperophylax designatus caddisfly - Hesperophylax designatus - male caddisfly - Hesperophylax designatus - male
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Trichoptera (Caddisflies)
Suborder Integripalpia
Infraorder Plenitentoria
Superfamily Limnephiloidea
Family Limnephilidae (Northern Caddisflies)
Subfamily Limnephilinae
Tribe Limnephilini
Genus Hesperophylax
Species designatus (Silver-striped Sedge)
Other Common Names
Giant Golden Caddis
Synonyms and other taxonomic changes
described in 1852 by Walker, who originally placed it in genus Limnephilus
Numbers
One of 6 species in this genus in the Nearctic region on the Trichoptera World Checklist
Identification
Adult: forewing brownish-orange with three thin silvery-white longitudinal stripes: the main stripe is about half the wing's length and situated centrally, just anterior to its midpoint; two smaller black-edged white stripes run parallel over posterior third of wing, offset above and below the level of the first stripe, and extending to the outer margin (see photo)

Larva: abdomen enclosed in elongate cylindrical case composed of rock/stone fragments
Range
Alaska to Newfoundland, extending south in the east to Pennsylvania and Illinois, and south in the west to New Mexico and California; absent in southeastern states
Season
adults fly from June to August in Yukon Territory
Food
larvae feed mainly on detritus
Remarks
Will come to artificial lights at night.
See Also
Limnephilus ornatus forewing contains several elliptical white spots in subterminal area, lacking in H. designatus
some Psychoglypha species (such as P. avigo) have longitudinal white stripes on the forewing, but not in the specific arrangement seen in H. designatus
Internet References
live adult image (T.W. Davies, courtesy U. of California at Berkeley)
live adult image (enature.com)
live adult image (worleybuggerflyco.com)
live larval case image showing several dozen cases on a log (Government of Montana)
drawings of larval case and larva removed from case; PDF doc plus key to larval families (R.W. Bouchard, U. of Minnesota)
seasonality; PDF doc (Glenn Wiggins and Charles Parker, Caddisflies of the Yukon, courtesy U. of Alberta)
distribution listing states and provinces of occurrence (NatureServe Explorer)