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

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

Posts: 2457		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
Another Erie trip
In Fishing Reports by Wbranch
Re: Michigan Slate Wing Mahogany or Blue Quill
In General Discussion by Brian314 (Roguerat replied)
Wing Material
In Fly Tying by Unsinkable1
Re: Salmonflies
In Fly Tying by Martinlf (Unsinkable1 replied)
Re: 4 broken rods in one month
In Gear Talk by S037474 (Iasgair replied)
Re: Hungarian Partridge Skins
In Fly Tying by Joerobert (RleeP replied)
Re: Necks
In General Discussion by Flytyerinpa (TNEAL replied)
Re: Steelhead October 2018
In Fishing Reports by Wbranch (Adirman replied)
Re: Soft Hackles
In Fly Tying by OldHasBeen (Joerobert replied)
Re: larvae vs nymph
In the Identify This! Board by Billq (Wbranch replied)