**Female Baetis (Blue-Winged Olives) Mayfly Spinner Pictures**

Mayflies

Caddisflies

Stoneflies

Classification

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Baetidae (Blue-Winged Olives)

» Genus Baetis (Blue-Winged Olives)

I captured and photographed this specimen as a dun before she molted into the spinner photographed here. Her wings got a bit torn up in the process.

This mayfly was collected from Mongaup Creek on April 19th, 2006 and added to Troutnut.com on April 21st, 2006.

View Full Size and Comment (2X larger)

Female Baetis (Blue-Winged Olives) Mayfly Spinner from Mongaup Creek in New York

AuthorTroutnut

CameraCanon EOS 20D

View Full Size and Comment (2X larger)

AuthorTroutnut

CameraCanon EOS 20D

View Full Size and Comment (2X larger)

AuthorTroutnut

CameraCanon EOS 20D

View Full Size and Comment (2X larger)

AuthorTroutnut

CameraCanon EOS 20D

Start a Discussion of this Spinner:

You must log in at the top of the page to post. If you haven't registered yet, it's this easy:

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.