Troutnut Forum > Specimen Discussion > Stumped!

The Specimen

The Discussion

GONZO	July 19th, 2007, 11:51 am
"Bear Swamp," PA Posts: 866	Jason, I've looked at this specimen several times since you first posted it and still have no guesses as to genus or species. I think what throws me most is the pale color of the wings. 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. But then, the E. needhami I've seen also had darker 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.
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Taxon	July 19th, 2007, 12:23 pm
Mercer Island, WA Posts: 478	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.
	Roger Rohrbeck www.FlyfishingEntomology.com
Konchu	July 19th, 2007, 12:28 pm
Indiana Posts: 199	Those IDs were my guesses. I didn't pay any attention to the size aspect. New guess: maybe a Eurylophella?
GONZO	July 19th, 2007, 12:45 pm
"Bear Swamp," PA Posts: 866	Now we're talkin'! Paralep vs. Eurylop--have at it, guys! (I'm also curious about that little fingerlike projection on top of the thorax. I've seen that before on ephemerellids, but . . . .)
Taxon	July 19th, 2007, 2:37 pm
Mercer Island, WA Posts: 478	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.
	Roger Rohrbeck www.FlyfishingEntomology.com
Troutnut	July 19th, 2007, 3:30 pm
Fairbanks, AK Posts: 1113	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 The Troutnut
Konchu	July 19th, 2007, 4:37 pm
Indiana Posts: 199	The forceps also are ephemerellid-like.
Dhfunk	February 25th, 2008, 7:41 am
Avondale PA Posts: 1	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.
Troutnut	February 25th, 2008, 1:15 pm
Fairbanks, AK Posts: 1113	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 The Troutnut

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