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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 32 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:1...313233...128

Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph

View 5 PicturesI spent (Spent: The wing position of many aquatic insects when they fall on the water after mating. The wings of both sides lay flat on the water. The word may be used to describe insects with their wings in that position, as well as the position itself.) a while with a microscope to fairly positively identify this specimen as Ephemerella excrucians.

Collected June 9, 2005 from the Bois Brule River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006

Ephemera varia (Yellow Drake) Mayfly Nymph

View 4 Pictures

Collected March 29, 2006 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 6, 2006

Female Epeorus frisoni Mayfly Dun

View 7 PicturesI collected this female dun together with a female spinner, a male dun, and a larger, damaged male dun.

Collected September 6, 2006 from Mystery Creek #23 in New York
Added to Troutnut.com by Troutnut on October 3, 2006

Acroneuria carolinensis (Golden Stone) Stonefly Nymph

View 3 Pictures

Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Female Hexagenia limbata (Hex) Mayfly Dun

View 6 Pictures

Collected June 28, 2005 from the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006

Female Ephemerella invaria (Sulphur Dun) Mayfly Spinner

View 5 Pictures

Collected May 26, 2007 from Penn's Creek in Pennsylvania
Added to Troutnut.com by Troutnut on June 4, 2007

Female Hexagenia limbata (Hex) Mayfly Dun

View 6 Pictures

Collected June 28, 2005 from the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006

Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Spinner

View 6 PicturesI'm not sure of the species of this female spinner, and unfortunately I never found the associated males or duns to aid in identification. The egg-laying flight and fall of fairly large clouds of these females caused good rises of choosy trout for a week or so around early July on a large, cold spring creek in the northwoods. There is a distinctive stripe down the female's back, identical to that on this specimen collected a month later.

Collected July 1, 2005 from the Bois Brule River in Wisconsin
Added to Troutnut.com by Troutnut on April 22, 2006

Maccaffertium luteum Mayfly Nymph

View 4 Pictures

Collected January 19, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Female Cinygmula (Dark Red Quills) Mayfly Dun

View 6 PicturesThis one was collected in association with a male spinner probably of the same species.

Collected July 1, 2017 from the South Fork Stillaguamish River in Washington
Added to Troutnut.com by Troutnut on July 2, 2017

Specimen Page:1...313233...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.

Spent: The wing position of many aquatic insects when they fall on the water after mating. The wings of both sides lay flat on the water. The word may be used to describe insects with their wings in that position, as well as the position itself.

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.