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Arthropod Class Insecta (Insects)

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

Order in Insecta
ColeopteraBeetles	0	1
DipteraTrue Flies	0	9
EphemeropteraMayflies	0	67
HemipteraTrue Bugs	0	7
HymenopteraAnts, Bees, and Wasps	0	0
LepidopteraMoths	0	0
MegalopteraHellgrammites, Dobsonflies, and Alderflies	0	0
Odonata-AnisopteraDragonflies	0	0
Odonata-ZygopteraDamselflies	0	0
OrthopteraGrasshoppers and Crickets	0	0
PlecopteraStoneflies	0	6
Psocodea	0	0
TrichopteraCaddisflies	0	55

1 order isn't included.

Common Name

Match	Common Name
	Insects

Pictures Below ↓

This is page 112 of specimens of Insecta. Visit the main Insecta page for:

The behavior and habitat of Insecta.
114 underwater pictures of Insecta.

Pictures of 1229 Insect Specimens:

Specimen Page:1...111112113...124

Taenionema pacificum (Willowfly) Stonefly Adult

View 2 Pictures

Collected March 12, 2005 from the Jocko River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Female Zapada columbiana (Tiny Winter Black) Stonefly Adult

View 2 Pictures

Collected March 26, 2012 from the N. Fk Touchet River in Washington
Added to Troutnut.com by Bnewell on March 26, 2012

Female Formicidae (Ants) Ant Adult

View 6 PicturesThis specimen began with wings, but they were lost during handling. The reddish abdomen was semi-translucent and almost seemed to glow in the sunlight, and big brown trout were going crazy for them.

Collected August 22, 2018 from Mystery Creek #227 in Montana
Added to Troutnut.com by Troutnut on June 13, 2019

Female Drunella grandis (Western Green Drake) Mayfly Dun

View 7 PicturesI didn't find a male spinner to associate with this one; I'm tentatively calling it grandis based on size alone. I found it floating down the surface of the Henry's Fork (the only one I saw that day, weeks after the hatch probably peaked) crippled by what appears to be a mass of eggs sticking out of its abdomen.

Collected August 1, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 18, 2020

Claassenia sabulosa (Golden Stone) Stonefly Nymph

View 2 PicturesThis is a stonefly that has recently molted and has not yet darkened.

Collected May 14, 2005 from the Jocko River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Female Tricorythodes (Tricos) Mayfly Spinner

View 5 Pictures

Collected August 11, 2018 from the Big Hole River in Montana
Added to Troutnut.com by Troutnut on June 11, 2019

Ameletus (Brown Duns) Mayfly Nymph

View 2 Pictures

Collected March 5, 2005 from the Flathead River-lower in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Male Cinygmula mimus Mayfly Spinner

View 2 PicturesMale Cinygmula mimus spinner trapped in its subimago (Subimago: Mayfly nymphs emerge from the water into subimagoes, better known to anglers as "duns." They are a sexually immature, winged, recognizably adult stage and they must molt one more time into imagoes or "spinners" before they can mate.) skin, a cripple (Cripple: In fly fishing, a cripple is any insect which has been injured or deformed so that it cannot escape the water. This may include stillborn emergers or fully emerged adults which have been damaged, often by wind or waves, so that they can no longer fly. Trout often favor eating crippled insects.)??

Collected June 3, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 5, 2012

Male Drunella coloradensis (Small Western Green Drake) Mayfly Spinner

View 9 PicturesThis spinner molted from this dun, or possibly one other dun I had in the same container that looked just like it.

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

Male Cinygmula par Mayfly Spinner

View 9 PicturesThis specimen was collected from a swarm with a female and another male.

Collected July 4, 2020 from Mystery Creek #249 in Washington
Added to Troutnut.com by Troutnut on July 12, 2020

Specimen Page:1...111112113...124

Jargon Defined:

Abdomen: The rear and usually the longest (ten-segmented in mayflies) portion of an insect's body, to which the tails are attached.

Cripple: In fly fishing, a cripple is any insect which has been injured or deformed so that it cannot escape the water. This may include stillborn emergers or fully emerged adults which have been damaged, often by wind or waves, so that they can no longer fly. Trout often favor eating crippled insects.

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.

Subimago: Mayfly nymphs emerge from the water into subimagoes, better known to anglers as "duns." They are a sexually immature, winged, recognizably adult stage and they must molt one more time into imagoes or "spinners" before they can mate.