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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 110 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...109110111...128

Female Baetidae (Blue-Winged Olives) Mayfly Dun

View 3 Pictures

Collected May 22, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Hydropsychidae Caddisfly Larva

View 4 PicturesEvery picture of this Hydropsychidae larva was taken with my old C740UZ through a microscope.

Collected November 15, 2004 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 12, 2006

Rhithrogena robusta Mayfly Spinner

View 2 Pictures

Collected July 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on July 15, 2011

Serratella micheneri (Little Western Dark Hendrickson) Mayfly Nymph

View 6 Pictures

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

Female Maccaffertium modestum (Cream Cahill) Mayfly Spinner

View 3 PicturesThis one was collected in in association with this male. It looks quite different, but that's often the case between spinner genders.

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

Siphlonurus quebecensis (Gray Drake) Mayfly Nymph

View 2 Pictures

Collected June 1, 2005 from the Bois Brule River in Wisconsin
Added to Troutnut.com by Troutnut on May 24, 2006

Male Hydropsyche (Spotted Sedges) Caddisfly Adult

View 5 PicturesThis was identified by Dave Ruiter as Hydropsyche californica or Hydropsyche occidentalis, but the characteristics were not clear enough to tell them apart.

Collected August 11, 2018 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on June 12, 2019

Chironomidae (Midges) Midge Larva

View 8 PicturesThese larvae were all over the submerged rocks in a small mountain stream in the Washington Cascades, tightly adhering to the rocks in their flat, half-disk-shaped cases.

Collected July 25, 2019 from Mystery Creek #249 in Washington
Added to Troutnut.com by Troutnut on July 27, 2019

Ephemerella tibialis (Little Western Dark Hendrickson) Mayfly Nymph

View 13 Pictures

Collected August 3, 2020 from the East Fork Big Lost River in Idaho
Added to Troutnut.com by Troutnut on August 19, 2020

Baetidae (Blue-Winged Olives) Mayfly Nymph

View 3 PicturesHere's a Baetid nymph close to hatching, with darkened wingpads. It's got dark bands on the tail at the middle and tip, a rounded, oval 7th gill, and gill veinlets (Veinlet: Short insect wing veins connecting the major longitudinal veins to the wing margin.) which are visible but not conspicuous.

Collected August 8, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Specimen Page:1...109110111...128

Jargon Defined:

Larva: Many classes of aquatic insects, such as caddisflies, midges, craneflies, dobsonflies, alderflies, and many more, are known as "larvae" rather than "nymphs" in their juvenile stages. They have mostly soft bodies rather than hard exoskeletons. These insects also advance through a "pupa" stage before reaching adulthood.

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).

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.

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