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

> > ID on this one?

The Specimen

Epeorus (Little Maryatts) Mayfly DunEpeorus (Little Maryatts) Mayfly Dun View 12 PicturesI hoped this dun would molt into a spinner for a positive ID, but it didn't. My best guess is Epeorus dulciana, but that's only because that's the smallest western Epeorus species, and this specimen is smaller than any of the others, with a body length of 5.3 mm (although it would be longer as a spinner) and a wing length of 8.5 mm.

It was collected at the same time as a similar-sized female dun.
Collected July 5, 2017 from the South Fork Sauk River in Washington
Added to Troutnut.com by on July 6, 2017

The Discussion

TroutnutJuly 6th, 2017, 5:49 pm
Administrator
Bellevue, WA

Posts: 2732
See the caption for the specimen -- I'm thinking Epeorus dulciana based on size and geographic distribution alone, but I can't find any information about how their duns look. Pretty mayfly, though!
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Quick Reply

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

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.
Most Recent Posts
Re: A pretty day on the river
In Fishing Reports by Partsman (Taxon replied)
Re: Where are the fishing stories? Rough weather conditions?
In General Discussion by Jmd123 (Troutnut replied)
Re: Hike in the Clearwater Mountains in the Alaska Range (Day 4 of 4)
In Site Updates by Troutnut
Re: Atigun float
In The Atigun River by Sci (Troutnut replied)
Re: Sheets Red Quill
In General Discussion by Brian314 (Jmd123 replied)
Re: Hendricksons
In Fishing Reports by Partsman (Jmd123 replied)
Re: New Troutnut version in the works
In Site Updates by Troutnut (Wiflyfisher replied)
Re: Scratching my head on the size here...
In Male Drunella doddsii Mayfly Dun by Jimspeaker (Taxon replied)
Re: SOMETHING'S biting, finally!
In the Photography Board by Jmd123 (Partsman replied)
Re: New rod opinions
In Gear Talk by Jt7 (Partsman replied)