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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 78 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...777879...124

Female Acentrella turbida (Tiny Blue-Winged Olive) Mayfly Spinner

View 1 PicturesHere is the female spinner of the tiny Acentrella turbida. You can see the coloration is quite different from the male.

Collected July 27, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 29, 2011

Drunella flavilinea (Flav) Mayfly Spinner

View 1 Pictures

Collected July 31, 2010 from the Flathead River-lower in Montana
Added to Troutnut.com by Bnewell on June 29, 2011

Ecdyonurus criddlei (Little Slate-Winged Dun) Mayfly Nymph

View 1 PicturesThis is an interesting Heptageniid mayfly since in western Montana it is only found in cold lakes, especially those in Glacier National Park.

Collected July 31, 2007 from Kintla Lake in Montana
Added to Troutnut.com by Bnewell on June 26, 2011

Female Kogotus nonus Stonefly Adult

View 18 Pictures

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

Paraleptophlebia bicornuta (Mahogany Dun) Mayfly Nymph

View 1 PicturesThis species is interesting because it is common in lakes as well as streams. It is one of the last species of the year to emerge in western Montana. Adults have been collected as late as October 15 weather permitting.

Collected July 31, 2007 from Flathead Lake in Montana
Added to Troutnut.com by Bnewell on June 26, 2011

Siphlonurus autumnalis (Gray Drake) Mayfly Nymph

View 1 Pictures

Collected August 31, 2007 from Crazy Beaver Spring in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Male Cheumatopsyche (Little Sister Sedges) Caddisfly Adult

View 12 PicturesI didn't identify this one directly, but I eventually identified one of several I collected from the same swarms that appeared to be of the same species. (I lost track of which specimen was which in storage.) The microscope pictures come from one of these specimen, not necessarily the same specimen as the DSLR pictures. They key to Cheumatopsyche, and the hind wing venation (Venation: The pattern in which the veins on the wings of an insect are arranged. It is usually one of the most useful identifying characteristics.) that separates them from Hydropsyche is pretty clear in the attached picture as well as another specimen I checked under the scope.

This specimen was one of tens of thousands we saw on a July 1st evening on the Madison, beginning with big swarms around every vehicle and tree at the Eight Mile Ford access point and continuing all up and down the river bank. We somehow didn't catch any trout, perhaps because they were stuffed with pupae from when these things emerged. Or maybe we just weren't fishing well. Either way, this one represents a major hatch there.

I somehow forgot to photograph this important specimen against the hooks size chart, but fortunately I preserved a few. The body length is about 6 mm, and total length from head to wingtip is 9 mm.

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

Osobenus yakimae Stonefly Nymph

View 6 PicturesThis nymph keys out to Osobenus yakimae, and a comparison of the markings with a specimen on flyfishingentomology.com (http://www.flyfishingentomology.com/WAStoneflyDescription.php?Fa=Perlodidae&Ge=Osobenus) provides a good verification.

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

Caenis (Angler's Curses) Mayfly Dun

View 1 Pictures

Collected August 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006

Calineuria californica (Golden Stone) Stonefly Nymph

View 1 Pictures

Collected August 9, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on August 9, 2011

Specimen Page:1...777879...124

Jargon Defined:

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).

Pupae: Any insect which spends most of its juvenile lifetime as a larva first becomes a pupa for a time before emerging as a fully grown adult. Depending on the species, the pupal form can be very important for fly fishermen to imitate.

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.

Venation: The pattern in which the veins on the wings of an insect are arranged. It is usually one of the most useful identifying characteristics.