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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 111 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...110111112...124

Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner

View 3 Pictures

Collected August 4, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006

Female Ephemerella dorothea infrequens (Pale Morning Dun) Mayfly Spinner

View 9 PicturesI'm calling this one Ephemerella dorothea infrequens because it was collected along with two males that positively ID to that species.

Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Neoleptophlebia Mayfly Nymph

View 6 Pictures

Collected June 16, 2018 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on July 3, 2018

Male Lepidostoma podagrum (Little Brown Sedge) Little Brown Sedge Adult

View 3 Pictures

Collected May 12, 2011 from the Fall River in California
Added to Troutnut.com by Entoman on December 10, 2011

Isoperla quinquepunctata (Little Yellow Stonefly) Little Yellow Stonefly Nymph

Isoperla quinquepunctata (Little Yellow Stonefly) Stonefly Nymph

View 2 PicturesSize - (excluding tails) - 10 mm
Status at time of photo - preserved but no discernible color change as specimen was captured only a few days earlier.
Key characters - unique pattern on dorsal (Dorsal: Top.) head and thorax (Thorax: The thorax is the middle part of an insect's body, in between the abdomen and the head, and to which the legs and wings are attached.); dark medial (Medial: Toward the middle of the body.) terga (Tergum: the dorsal part of an abdominal segment or segments (terga). Also used to describe the entire abdominal dorsum or the thoracic dorsal segments of Odonata.) stripe between two paler stripes

This species is very common in west slope north Sierra watersheds. Richard W. Baumann & Boris C. Kondratieff did a study on the same section and at the same time of year (APRIL 25-29, 2010) where this specimen was taken. No other species of Isoperla were reported from this location and quinquepunctata was very abundant. Their hatches can be very heavy some Springs.

Entoman

Collected March 21, 2011 from the Lower Yuba River in California
Added to Troutnut.com by Entoman on November 1, 2011

Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph

View 6 Pictures

Collected June 13, 2019 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 14, 2019

Cinygmula (Dark Red Quills) Mayfly Nymph

View 3 Pictures

Collected May 10, 2008 from the Chena River in Alaska
Added to Troutnut.com by Troutnut on April 20, 2011

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

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

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

Specimen Page:1...110111112...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.

Dorsal: Top.

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.

Medial: Toward the middle of the body.

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.

Terga: the dorsal part of an abdominal segment or segments (terga). Also used to describe the entire abdominal dorsum or the thoracic dorsal segments of Odonata.

Thorax: The thorax is the middle part of an insect's body, in between the abdomen and the head, and to which the legs and wings are attached.