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

> > Thinking this is distinctus, but not sure



DayTripperJuly 2nd, 2009, 5:13 am
Northern MI

Posts: 70


Found this female dun on the East Branch of the Delaware the first weekend in June. It was ~30mm long. I'm pretty sure it's a female distinctus dun, but was hoping someone could confirm. Thanks.
GONZOJuly 2nd, 2009, 8:41 am
Site Editor
"Bear Swamp," PA

Posts: 1681
Alex,

This is Ephemera varia. A 30mm size estimate is well above what is typical for either E. varia or A. distinctus, though the size range for varia is underestimated in books like Hatches and Mayflies. They give 13-16mm as the range for both species, but the varia females that I've collected from the Yellow Breeches run between 17-20mm.
DayTripperJuly 2nd, 2009, 9:12 am
Northern MI

Posts: 70
Thanks Gonzo, I really appreciate it. I knew it had to be one of the two (distinctus or varia), but as you mentioned, the large size didn't fit what my reference books had listed. I know looking at coloration is a no-no when identifying bugs, but the coloration seemed more of a match to the distinctus color plate in Hatches, so I ran with it. Thanks, again.

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.

Related Discussions

TitleRepliesLast Reply
Re: Coffin Fly Spinner
In Male Ephemera simulans Mayfly Spinner by Jackson
6Jun 10, 2009
by Martinlf
Re: Stumper
In the Identify This! Board by JOHNW
8Jul 28, 2007
by Martinlf
Re: Californicas v. Hex
In the Identify This! Board by Byhaugh
1Feb 19, 2014
by Entoman
Re: Help with ID
In the Identify This! Board by Calloway
2Jul 9, 2008
by Wiflyfisher
Re: Isonichya Bicolor
In the Mayfly Family Isonychiidae by CraigK
21Mar 29, 2012
by Entoman
Re: Another Anthopotamus
In the Photography Board by Crepuscular
4Jun 16, 2012
by Entoman
Re: yellowish possibly night hatching mayfly
In the Identify This! Board by Aafloyd
20Nov 1, 2011
by Jmd123
Re: Dolophilodes (Philopotamidae)
In Male Dolophilodes distinctus Caddisfly Adult by Litobrancha
1Jun 12, 2007
by Troutnut
Beautiful yellow drake
In Female Ephemera varia Mayfly Dun by GONZO
0
Re: Surprising Length
In Female Ephemera varia Mayfly Spinner by Taxon
3Sep 13, 2006
by GONZO