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The Specimen

Penelomax septentrionalis Mayfly NymphPenelomax septentrionalis  Mayfly Nymph View 12 PicturesThis is surely the most distinctive-looking species in Ephemerellidae. I like the rugged, spindly look. If mayflies made movies, Penelomax septentrionalis would probably play the supervillain.

Maybe I should take a break and get something to eat.
Collected May 13, 2007 from the Delaware River in New York
Added to Troutnut.com by on May 18, 2007

The Discussion

EarlfishmanMay 19th, 2007, 12:07 pm
Posts: 17Jason,

The underwater photos are unreal. What sort of lens are you using on that camera? It is just now occuring to me to ask how many of your pictures on this site are taken through a scope and how many are taken with just a camera?

Earl
GONZOMay 19th, 2007, 12:56 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
Jason, these are the first photos of septentrionalis I've seen--very cool! I've been meaning to discuss this species with Greg Hoover, but I probably won't have a chance to do that until mid-June. I'll be sure to share whatever I learn.
TroutnutMay 19th, 2007, 7:14 pm
Administrator
Bellevue, WA

Posts: 2737
Almost all my photos are taken without a microscope, but I do have a very specialized macro photography setup. The "underwater" photos in specimens like this one are actually not underwater, but staged in a tiny aquarium I created to take more natural-looking pictures than my usual white-background ones.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

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