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

> > Stumped!

The Specimen

Ephemerella needhami (Little Dark Hendrickson) Mayfly DunEphemerella needhami (Little Dark Hendrickson) Mayfly Dun View 7 PicturesSee the comments for an interesting discussion of the identification of this dun.
Collected June 1, 2007 from the West Branch of the Delaware River in New York
Added to Troutnut.com by on June 4, 2007

The Discussion

GONZOJuly 19th, 2007, 8:51 am
Site Editor
"Bear Swamp," PA

Posts: 1681
Jason,

Somehow, I don't think this is Serratella--it seems too large (especially for a male), and the "S" with which I'm familiar have very dark wings. I thought I'd call attention to it in the hope that someone might be able to offer some insight and, perhaps, clear up the mystery.
TaxonJuly 19th, 2007, 9:23 am
Site Editor
Plano, TX

Posts: 1337
Gonzo-

It's a Paraloptophlebia male dun, lilely P. mollis. For verification, see the male dun on Hatches II Color Plate VII, and use some magnification on the photo to compare the distinctive hind wing costal cell venation to Jason's photos.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
KonchuJuly 19th, 2007, 9:28 am
Site Editor
Indiana

Posts: 503
Those IDs were my guesses. I didn't pay any attention to the size aspect. New guess: maybe a Eurylophella?
TaxonJuly 19th, 2007, 11:37 am
Site Editor
Plano, TX

Posts: 1337
Hi Konchu-

I like your guess a lot better than mine. In retrospect, wish I'd initially characterized it thusly. The presence of some costal angulation in the hind wing in Jason's photos was a bit troubling to me, as Paraleptophlebia are customarily rounded, but ah well.

The Mayflies Of Florida by Berner/Pescador, which your enthusiastic recent reference motivated me to purchase, illustrates both the fore and hind wing venation of a male Eurylophella temporalis (previously Ephemerella temporalis).

The venation (of both fore and hind wings) is really close to Jason's photos, except for an interesting (apparent) absence of (costal) crossveins on the basal 75% of the wing in Jason's photos.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com
TroutnutJuly 19th, 2007, 12:30 pm
Administrator
Bellevue, WA

Posts: 2723
I'll put it in Eurylophella for now. I'm sure it's some Ephemerellid; the body is too stout and the hind wing too wide to fit the general shape of a Paralep.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
KonchuJuly 19th, 2007, 1:37 pm
Site Editor
Indiana

Posts: 503
The forceps also are ephemerellid-like.
DhfunkFebruary 25th, 2008, 4:41 am
Avondale PA

Posts: 2
This is definitely Ephemerella needhami. I have photos of subs I reared from this region that look exactly like the posted photo. All Eurylophella from that region have slate-grey wings as subimagos, and more orangish eyes, with neutral brown body (not this reddish brown). Serratella deficiens has darkened "elbows" in the sub. Other Serratella from the region are somewhat similar to needhami, but smaller, of course.
TroutnutFebruary 25th, 2008, 10:15 am
Administrator
Bellevue, WA

Posts: 2723
Thanks Dhfunk. That sounds like the most confident ID on this one yet and it's pretty consistent with what's been suggested by others.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
BeardiusDecember 5th, 2008, 1:44 am
Posts: 19I trust DhFunk's identification and expertise as well.

It is nice to see some really top notch taxonomists contributing to these boards.

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: Thoughts
In Male Eurylophella Mayfly Spinner by Taxon
5Mar 7, 2013
by Entoman
Re: From Hook-up to Hand
In General Discussion by GONZO
21Jul 20, 2007
by Shawnny3
Re: Not invaria
In Male Eurylophella Mayfly Spinner by GONZO
2May 24, 2009
by GONZO
Anyone want to weigh on on the ID here?
In Female Baetidae Mayfly Spinner by Troutnut
0
Re: 2 insect wing vein questions, and 1 on etymology
In General Discussion by Dickybird
8Sep 7, 2021
by Troutnut
Re: Political adds by Google
In General Discussion by Minnesota
19Aug 4, 2011
by Troutnut
Re: Is this Chloroperlide?
In Alloperla Stonefly Adult by Troutnut
3Apr 8, 2010
by Myersl
Acerpenna?
In Male Baetis Mayfly Dun by Entoman
0
Re: Not Maccaffertium, E. vitreus female
In Female Epeorus vitreus Mayfly Dun by GONZO
1Oct 19, 2006
by Troutnut
Re: Emerger
In the Mayfly Genus Serratella by Martinlf
6Jun 11, 2009
by GONZO
Most Recent Posts
Re: Tellico Nymph
In Fly Tying by Coha (Wbranch replied)
Michigan's Ausable River System
In General Discussion by Oxbow
Re: Trico Spinner, as requested
In the Identify This! Board by Gutcutter (Wiflyfisher replied)
Re: Trico nymphs and emergers
In the Mayfly Genus Tricorythodes by Steamntrout (Martinlf replied)
Re: Holy Grail Caddis pupa
In Fly Tying by Coha (Wbranch replied)
Re: Centroptilum
In the Identify This! Board by Wbranch (Konchu replied)
Re: Jonathon's moving again...
In General Discussion by Jmd123 (Martinlf replied)
Re: Bald-Tailed Baetidae
In General Discussion by Dickybird (Konchu replied)
Re: 2 insect wing vein questions, and 1 on etymology
In General Discussion by Dickybird (Troutnut replied)
Re: Is this :-)
In Mystery Creek # 256 by SantaSa (Troutnut replied)