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> > Ephemerella maculata



Millcreek has attached these 6 pictures. The message is below.
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Showing sternites. Coloration common to all specimens.
Showing sternites. Coloration common to all specimens.
View Full SizeView Full Size (1.2X larger)
Length approximately 6 mm (excluding cerci).
Length approximately 6 mm (excluding cerci).
View Full SizeView Full Size (1.2X larger)
Length approximately 6 mm (excluding cerci).
Length approximately 6 mm (excluding cerci).
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Length approximately 8 mm (excluding cerci).
Length approximately 8 mm (excluding cerci).
View Full SizeView Full Size (1.6X larger)
Length approximately 8 mm (excluding cerci).
Length approximately 8 mm (excluding cerci).
View Full SizeView Full Size (1.4X larger)
Length approximately 8 mm (excluding cerci).
Length approximately 8 mm (excluding cerci).
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MillcreekApril 10th, 2015, 11:22 am
Healdsburg, CA

Posts: 356		Common in the Russian River. Usually found in small gravel, in shallow water. The nymphs were keyed out to family using Merritt, Cummins and Berg (2008) and to species using Allen and Edmunds "A Revision of the Genus Ephemerella (Ephemeroptera; Ephemerellidae) VII. The Subgenus Ephemerella in North America".
http://www.ephemeroptera-galactica.com/pubs/pub_a/puballenr1965p244.pdf
These nymphs show considerable variation in coloring but maintain the same body shape and typical coloring of the sternites.
TroutnutApril 11th, 2015, 3:12 pm
Administrator
Bellevue, WA

Posts: 2737		Excellent photos!
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
MillcreekApril 12th, 2015, 10:26 am
Healdsburg, CA

Posts: 356		Thanks, glad you enjoyed them.
PaulRobertsApril 12th, 2015, 9:38 pm
Colorado

Posts: 1776		Gorgeous critter.

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