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Animal Kingdom Animalia (Animals)

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

Phylum in Animalia
AnnelidaWorms and Leeches	0	2
ArthropodaArthropods	0	122
ChordataVertebrates	0	4
Mollusca	0	6
PlatyhelminthesFlatworms	0	0

Common Name

Match	Common Name
	Animals

Pictures Below ↓

This is page 29 of specimens of Animalia. Visit the main Animalia page for:

The behavior and habitat of Animalia.
131 underwater pictures of Animalia.

Pictures of 1264 Animal Specimens:

Specimen Page:1...282930...128

Chimarra (Little Black Sedges) Caddisfly Larva

View 4 Pictures

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Isonychia bicolor (Mahogany Dun) Mayfly Nymph

View 5 Pictures

Collected April 19, 2006 from the Beaverkill River in New York
Added to Troutnut.com by Troutnut on April 21, 2006

Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly Nymph

View 4 PicturesLooking at this one under the microscope, I noted that is has untracheated gills which fork 1/3 of the way from the base and postero-lateral (Lateral: To the side.) spines on abdominal segment 9

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

Female Perlesta (Golden Stones) Stonefly Adult

View 9 PicturesThis stonefly species was the most common insect over the small stream I fished one August afternoon; I saw dozens in their egg-laying flights.

Collected August 24, 2006 from Enfield Creek in New York
Added to Troutnut.com by Troutnut on August 27, 2006

Ephemerella invaria (Sulphur Dun) Mayfly Nymph

View 4 PicturesI looked at this small Ephemerella nymph very carefully under a microscope. It as no abdominal tubercles (

A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.

Tubercle: Various peculiar little bumps or projections on an insect. Their character is important for the identification of many kinds of insects, such as the nymphs of Ephemerellidae mayflies.) and 1-banded tibiae (

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

Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.). I think just 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.) invaria nymph.

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

Hagenius brevistylus Dragonfly Nymph

View 4 Pictures

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Female Epeorus albertae (Pink Lady) Mayfly Dun

View 7 Pictures

Collected July 11, 2017 from the North Fork Stillaguamish River in Washington
Added to Troutnut.com by Troutnut on July 12, 2017

Female Pteronarcys californica (Giant Salmonfly) Stonefly Adult

View 11 Pictures

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

Cinygmula (Dark Red Quills) Mayfly Nymph

View 7 PicturesThis very strange nymph appears to be undoubtedly Cinygmula, yet it lacks the telltale protruding mouthparts that usually make that genus so easy to identify.

Collected July 17, 2011 from the Gulkana River in Alaska
Added to Troutnut.com by Troutnut on July 20, 2011

Formicidae (Ants) Ant Adult

View 7 PicturesI collected this flying ant from the surface of a popular Catskill trout stream, where its species prompted steady rising from selective trout for several late-morning hours. It was mixed with smaller ants of a different color, and I photographed one of them too.

Collected September 5, 2006 from the Neversink River in New York
Added to Troutnut.com by Troutnut on October 3, 2006

Specimen Page:1...282930...128

Jargon Defined:

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.

Lateral: To the side.

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).

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

Tibiae: A middle segments in the leg of an insect, located between the femur and the tarsus.

A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.

Tubercles: Various peculiar little bumps or projections on an insect. Their character is important for the identification of many kinds of insects, such as the nymphs of Ephemerellidae mayflies.