**Female Leptophlebia (Black Quills) Mayfly Dun Pictures**

Mayflies

Caddisflies

Stoneflies

Classification

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Leptophlebiidae (Black Quills and Blue Quills)

» Genus Leptophlebia (Black Quills)

I collected this mayfly after user Al514 tipped me off to the presence of some Leptophlebia mayflies I didn't seem to have yet with his ID request of a male dun. This seems to be of the same species. I also collected a female spinner. Based on that spinner, I can tell that this is either Leptophlebia cupida or Leptophlebia nebulosa, but I can't tell which.

Unfortunately none of the specimens I collected made it through the hot, sunny day very well. So the pictures aren't great, but they're better than nothing.

This mayfly was collected from the northeastern United States on May 9th, 2007 and added to Troutnut.com on May 18th, 2007.

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CameraCanon EOS 20D

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This specimen is on the left in this picture. On the right is another one I collected but didn't otherwise photograph. It's from the same stream and time, and presumably of the same species. It shows quite a bit of natural variation.

CameraCanon EOS 20D

View Full Size (2.7X larger)

CameraCanon EOS 20D

View Full Size (2.7X larger)

CameraCanon EOS 20D

View Full Size (2.7X larger)

CameraCanon EOS 20D

View Full Size (2.7X larger)

CameraCanon EOS 20D

View Full Size (2.7X larger)

CameraCanon EOS 20D

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Jargon Defined:

Dun: Mayflies have two adult stages. They first emerge from the water as duns (scientifically known as the subimago stage). They then molt into the spinner (imago) stage, in which they mate and die. Sometimes the word "dun" is confusingly used to refer to a brownish gray color in fly tying materials.

Spinner: There are two winged stages of adult mayflies. They emerge from the water as duns, molt on land (usually) into their fully mature stage, spinners. As spinners, they mate, lay eggs, and die.

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