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Animal Phylum Arthropoda (Arthropods)

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

Class in Arthropoda
ArachnidaMites and Spiders	0	1
CollembolaSpringtails	0	0
Crustacea-MalacostracaCrayfish, Scuds, and Sowbugs	0	10
Crustacea-Maxillopoda	0	0
InsectaInsects	0	114

Common Name

Match	Common Name
	Arthropods

Pictures Below ↓

This is page 55 of specimens of Arthropoda. Visit the main Arthropoda page for:

The behavior and habitat of Arthropoda.
122 underwater pictures of Arthropoda.

Pictures of 1244 Arthropod Specimens:

Specimen Page:1...545556...126

Siphloplecton basale (Pseudo-Gray Drake) Mayfly Nymph

View 3 PicturesThis one's stunned or freshly dead in the pictures, because the water in my photographing tank was a bit too warm for him after being under the bright light for a while.

Collected January 31, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Gomphidae Dragonfly Nymph

View 2 Pictures

Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Claassenia sabulosa (Golden Stone) Stonefly Nymph

View 2 Pictures

Collected February 1, 2008 from the Flathead River-upper in Montana
Added to Troutnut.com by Bnewell on June 27, 2011

Taeniopteryx (Early Black Stoneflies) Stonefly Nymph

View 2 Pictures

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

Perlidae (Golden Stones) Stonefly Nymph

View 2 Pictures

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

Male Taenionema pacificum (Willowfly) Stonefly Adult

View 2 Pictures

Collected March 1, 2005 from the Jocko River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Epeorus vitreus (Sulphur) Mayfly Nymph

View 3 PicturesKey features I discerned with a microscope include that the femoral flange is blunt (later note: on nymphs of this size, it's somewhat ambiguous and the femora (

The femur of this Isonychia bicolor mayfly spinner is highlighted in red.

Femur: The main segment of an insect's leg close to the body, in between the tibia and the trochanter.) can be damaged in the collection process), the postero-lateral (Lateral: To the side.) spines have a longer anterior (Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of."), the first gill is not extended, all gills are tracheated, and the femora (

The femur of this Isonychia bicolor mayfly spinner is highlighted in red.

Femur: The main segment of an insect's leg close to the body, in between the tibia and the trochanter.) have a distinctive brown spot on the center while all the other spots are gray.

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

Limnophila True Fly Larva

View 2 Pictures

Collected February 2, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Corydalidae (Hellgrammites) Hellgrammite Larva

Corydalidae (Hellgrammites) Insect Larva

View 2 PicturesI believe this is a verr young hellgrammite that just hasn't darkened to its regular color yet, but I'm not sure.

Collected February 2, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Isonychia bicolor (Mahogany Dun) Mayfly Nymph

View 2 Pictures

Collected February 10, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Specimen Page:1...545556...126

Jargon Defined:

Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of."

The femur of this Isonychia bicolor mayfly spinner is highlighted in red.

Femora: The main segment of an insect's leg close to the body, in between the tibia and the trochanter.

Lateral: To the side.

Nymphs: 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).