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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 50 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...495051...124

Aeshnidae Dragonfly Nymph

View 2 Pictures

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

Chironomidae (Midges) Midge Larva

View 2 Pictures

Collected February 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Strophopteryx fasciata (Mottled Willowfly) Stonefly Nymph

View 2 Pictures

Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006

Male Ameletus oregonensis (Brown Dun) Mayfly Spinner

View 3 Pictures

Collected May 12, 2005 from Hungry Horse Creek in Montana
Added to Troutnut.com by Bnewell on June 28, 2011

Baetidae (Blue-Winged Olives) Mayfly Nymph

View 2 PicturesHere's a rather different tiny Baetid nymph. The tails are all unbanded, and the tergites (

One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.

Tergite: The top (dorsal) part of a single segment on an insect's abdomen when it consists of a single chitinous plate (sclerite), or an individual sclerite if the segment has more than one.) all have a dark-colored anterior (Anterior: Toward the front of an organism's body. The phrase "anterior to" means "in front of.") 2/3 and light-colored posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") 1/3. The gill veinlets (Veinlet: Short insect wing veins connecting the major longitudinal veins to the wing margin.) are indistinct. It's probably a very early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) of some Baetis species.

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

Gomphidae Dragonfly Nymph

View 2 Pictures

Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Female Siphlonurus quebecensis (Gray Drake) Mayfly Dun

View 3 PicturesThis one hatched in my house after I brought some nymphs home to photograph.

Collected May 18, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Ephemerella subvaria (Hendrickson) Mayfly Nymph

View 3 Pictures

Collected January 12, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Baetidae (Blue-Winged Olives) Mayfly Nymph

View 2 Pictures

Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Pteronarcys californica (Giant Salmonfly) Stonefly Nymph

View 13 Pictures

Collected July 2, 2019 from the Gallatin River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Specimen Page:1...495051...124

Jargon Defined:

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

Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.

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).

Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of."

One tergite of this Isonychia bicolor mayfly spinner is highlighted in red.

Tergites: The top (dorsal) part of a single segment on an insect's abdomen when it consists of a single chitinous plate (sclerite), or an individual sclerite if the segment has more than one.

Veinlets: Short insect wing veins connecting the major longitudinal veins to the wing margin.