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> > Rhyacophila spp.

Millcreek has attached these 4 pictures to aid in identification. The message is below.
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Rhyacophila hyalinata group. 12 mm.
Rhyacophila hyalinata group. 12 mm.
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Rhyacophila betteni group. 13 mm.
Rhyacophila betteni group. 13 mm.
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Rhyacophila betteni group. 14 mm.
Rhyacophila betteni group. 14 mm.
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Rhyacophila betteni group. 14 mm.
Rhyacophila betteni group. 14 mm.
MillcreekOctober 23rd, 2015, 9:16 pm
Healdsburg, CA

Posts: 306
These two Rhyacophila species were collected from Mill Creek, a tributary of the Russian River. The first is probably a member of the Rhyacophila hyalinata group and the second is probably a member of the Rhyacophila betteni group.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
TaxonOctober 24th, 2015, 1:21 am
Site Editor
Plano, TX

Posts: 1273
Very interesting and instructive photos, Mark. Thanks for sharing.
Roger Rohrbeck
www.FlyfishingEntomology.com
MillcreekOctober 24th, 2015, 10:53 am
Healdsburg, CA

Posts: 306
Glad you enjoyed them, Roger.

Mark
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

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