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Animal Kingdom Animalia (Animals)

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

Phylum in Animalia
AnnelidaWorms and Leeches	0	2
ArthropodaArthropods	0	122
ChordataVertebrates	0	4
Mollusca	0	6
PlatyhelminthesFlatworms	0	0

Common Name

Match	Common Name
	Animals

Pictures Below ↓

This is page 2 of specimens of Animalia. Visit the main Animalia page for:

The behavior and habitat of Animalia.
131 underwater pictures of Animalia.

Pictures of 1264 Animal Specimens:

Specimen Page:123 4...128

Male Isonychia bicolor (Mahogany Dun) Mayfly Spinner

View 15 PicturesI got several really nice pictures of this spinner. I also collected a female on the same trip.

Collected August 9, 2006 from the West Branch of Owego Creek in New York
Added to Troutnut.com by Troutnut on August 11, 2006

Male Ephemerella aurivillii Mayfly Spinner

View 15 PicturesThis spinner molted from a dun after being photographed, and the dun form is listed here as a separate specimen. I've rarely found a more cooperative and photogenic mayfly.

Collected July 10, 2011 from Nome Creek in Alaska
Added to Troutnut.com by Troutnut on July 16, 2011

Male Baetis (Blue-Winged Olives) Mayfly Dun

View 14 PicturesThis dun molted most of the way into a spinner (though the wings got stuck) the evening after I photographed it, so I took some more photos of the spinner.

I found a female nearby, probably of the same species.

Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006

Male Hexagenia atrocaudata (Late Hex) Mayfly Spinner

View 12 Pictures

Collected July 24, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on April 15, 2006

Female Hexagenia atrocaudata (Late Hex) Mayfly Dun

View 14 PicturesI found this lone Hexagenia atrocaudata dun fluttering by herself on the surface of a small, still stretch of river one evening as I paddled home from fishing for smallmouths in the warm August weather.

Collected August 5, 2005 from the Teal River in Wisconsin
Added to Troutnut.com by Troutnut on April 14, 2006

Male Drunella doddsii (Western Green Drake) Mayfly Dun

View 13 Pictures

Collected July 17, 2011 from the Gulkana River in Alaska
Added to Troutnut.com by Troutnut on July 20, 2011

Male Epeorus albertae (Pink Lady) Mayfly Spinner

View 14 Pictures

Collected July 11, 2017 from the North Fork Stillaguamish River in Washington
Added to Troutnut.com by Troutnut on July 12, 2017

Male Ephemerella aurivillii Mayfly Dun

View 14 PicturesThis is the most widespread species of Ephemerella, and also the most abundant in some places, but nobody I've talked to seemed to know what its duns looked like, and there were no pictures of its duns online or in any angling books. That mystery is solved with this male dun, which hatched from a definitively identified nymph.

Collected July 10, 2011 from Nome Creek in Alaska
Added to Troutnut.com by Troutnut on July 12, 2011

Male Hexagenia limbata (Hex) Mayfly Spinner

View 13 Pictures

Collected June 26, 2005 from Atkins Lake in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006

Female Baetidae (Blue-Winged Olives) Mayfly Spinner

View 12 PicturesThis species is probably in Centroptilum, Cloeon, or Procloeon. I captured this spinner on the same night as a dun which is probably of the same species.

Collected August 9, 2006 from the West Branch of Owego Creek in New York
Added to Troutnut.com by Troutnut on August 11, 2006

Specimen Page:123 4...128

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.

Nymph: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).

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.