Serratella micheneri nymphs

Millcreek has attached these 4 pictures. The message is below.

View Full Size (1.1X larger)

Female. Collected May 4, 2014.

View Full Size (1.3X larger)

Male. Collected May 4, 2014.

View Full Size (1.1X larger)

Male. Collected May 4, 2014.

View Full Size (1.7X larger)

Males. Collected May 4, 2014.

Millcreek	October 13th, 2014, 2:13 pm
Healdsburg, CA Posts: 356	Serratella micheneri nymphs are common in the Russian River from April through May. Most are found in glides with a substrate of large gravel and cobble in a moderate current. Usually found in large numbers on single rocks. I ID'd them to genus using Merritt, Cummins and Berg (2008) and to species with Allen and Edmunds "A Revision of the Genus Ephemerella (Ephemeroptera: Ephemerellidae). VI. The Subgenus Serratella in North America" (1963)http://www.ephemeroptera-galactica.com/pubs/pub_a/puballenr1963p583.pdf and Jacobus and McCafferty "Revisionary Contributions to North American Ephemerella and Serratella (Ephemeroptera: Ephemerellidae) (2003)http://www.ephemeroptera-galactica.com/pubs/pub_j/pubjacobusl2003p174.pdf. Nymphs are 5-7 mm in length (excluding cerci).


PaulRoberts	October 13th, 2014, 7:49 pm
Colorado Posts: 1776	Wow! Pretty critters they are.

Millcreek	October 13th, 2014, 8:40 pm
Healdsburg, CA Posts: 356	Paul- Yeah, they are pretty little varmints and like a lot of animals that have a pattern that's broken up like this they're really well camouflaged when in their regular habitat and not in a petri dish. Hope to get some photos of them on rocks next year. Have you seen these in Colorado? Apparently they've been reported there, as well as a number of other western states.

Quick Reply

You have to be logged in to post on the forum. It's this easy:

Title	Replies	Last Reply
Re: Ephemerella maculata (1 more) In the Photography Board by Millcreek	3	Apr 12, 2015 by PaulRoberts
Acentrella insignificans nymphs (1 more) In the Photography Board by Millcreek	0
Re: Ephemerella tibialis In Male Serratella micheneri Mayfly Nymph by Millcreek	2	Dec 26, 2019 by Millcreek
Re: ID on this little olive? In Female Attenella margarita Mayfly Dun by Troutnut	3	Oct 4, 2006 by GONZO
Re: Ephemerella nymph In Ephemerella aurivillii Mayfly Nymph by Millcreek	1	Sep 26, 2020 by Troutnut
Re: Serratella levis (2 more) In the Photography Board by Millcreek	8	Mar 20, 2016 by Entoman
Re: Ephemerellinae In the Mayfly Family Ephemerellidae by GONZO	7	Oct 4, 2008 by GONZO
Re: New Mexico ??? In Beginner Help by Hankaye	3	Apr 19, 2013 by Sayfu
Re: Fallceon spp. (15 more) In the Identify This! Board by Millcreek	4	Nov 21, 2014 by Millcreek
Re: Western North Carolina Mayfly Identification In the Identify This! Board by Dragonfly	2	Mar 29, 2021 by Troutnut