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WA Stonefly Description


Taxonomic Name
(Common Name)
NymphAdult
Perlidae
(Common Stone)
Head w/variable color patterns; finely branched gills only on sides of throacic segments, never extending to abdominal segments.Adults often retain remnants of the highly branched gills located around the coxal bases of the nymph.

Claassenia
(Shortwing Stone)
nymph

Copyright © 2007 Roger Rohrbeck
adult

Copyright © 2011 Bob Newell
 Predatious; brightly patterned; anal gills; regularly spaced row of peg sensilla behind ocelli.Males short-winged, have finger-like hemitergal processes on 10th seg, oval hammer on 9th seg; females fully winged & subgenital plate is unproduced.
Claassenia sabulosa

State of Washington distribution is based on: Valid Stonefly Names for North America.

Created: 08/16/2013   Last modified: 12/08/2014    www.FlyfishingEntomology.com