Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

Hesperoperla pacifica (Golden Stone) Stonefly Nymph Pictures



 This monster started to feed within a few minutes of sharing the inspection tray with its victims. This nymph is a voracious predator of small invertebrates and has even been noted for feeding on small fish and salmonid alevins. The niche it fills in fast water is equivalent to the Dragonfly nymphs that inhabit slower water.

Hesperoperla pacifica nymphs are easily distinguished from other western perlids by the presence of anal gills (obfuscated by algae in the tray) in combination with an hour glass shaped pale mark on the front of their heads.

This stonefly was collected from the Lower Yuba River on March 22nd, 2013 and added to Troutnut.com on April 4th, 2013.

View Full SizeView Full Size (2.5X larger)
Add
Hesperoperla pacifica (Golden Stone) Stonefly Nymph from the Lower Yuba River in CA
AuthorEntoman
CameraCanon PowerShot A490

Start a Discussion of this Nymph:

You must log in at the top of the page to post. If you haven't registered yet, it's this easy:

Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
Top Gift Shop Designs
I outfish my daddy!Electric blue Hendrickson dun.I love buggers. Big, green, wooly ones.I outfish my husband!Be the trout.
Eat mayflies.
Top Insect Specimens
Baetisca obesa Mayfly NymphNeophylax Caddisfly AdultCorydalus Hellgrammite LarvaRhyacophila fuscula Caddisfly LarvaPteronarcys biloba Stonefly Nymph
Miscellaneous Sites
Dalton Highway (Haul Road) Corridor Map