Aquatic Insect #11 ID?

Can you identify this aquatic insect by any of the following?

Order common name
Order taxonomic name
Family common name
Family taxonomic name
Genus common name
Genus taxonomic name
Lifestage
Sex

Hi Jay-

The family is not Ameletidae. Hint: look more closely at the tails.

IDENTIFICATIONS

Order common name: Mayfly (jwg)
Order taxonomic name: Ephemeroptera (jwg)
Family common name: ???
Family taxonomic name: ???
Genus common name: ???
Genus taxonomic name: ???
Lifestage: imago (jwg)
Sex: male (jwg)

Hi Jay-

I'm afraid you are on the wrong track. What did you make of the hint which I provided?

Hi Jay-

Compare the relative diameter of the two obvious tails. What does that tell you?

Hi Travis-

You are absolutely correct; it is a spinner. With mayflies, which have two winged lifestages: subimago = dun; imago = spinner. Dun and spinner are flyfishing terms for lifestage. Subimago and imago are entomology terms for lifestage. However, jwg has already correctly identified the lifestage as imago, so he retains credit for lifestage identification.

HI Jay-

What looks (at first glance) to be the right tail is being held in an unnatural position by a strand of the spider web, which is probably also responsible for the actual right tail having broken off at its base as the mayfly struggled to free himself.

So, one needs to ask, what mayfly genera are characterized by (3) tails in their winged lifestages, and with their middle tail being shorter and smaller in diameter than the outer two?

Good job, Jay.

IDENTIFICATIONS

Order common name: Mayfly (jwg)
Order taxonomic name: Ephemeroptera (jwg)
Family common name: Pronggilled Mayfly (jwg)
Family taxonomic name: Leptophlebiidae (jwg)
Genus common name: Black Quil (jwg)
Genus taxonomic name: Leptophlebia (jwg)
Lifestage: imago (jwg)
Sex: male (jwg)