Animals

Mayflies

Caddisflies

Stoneflies

Scientific Name

Match	Scientific Name
	Animalia

This common name refers to only one kingdom.

Animal Kingdom Animalia

These are pretty much always called Animals.

Metazoa is the kingdom of animals. Worms are metazoans and so were the dinosaurs. Trout and mayflies are metazoans. You are probably a metazoan.

See Arthropoda for most of the invertebrates trout eat, or skip straight to the insect orders Ephemeroptera (Mayflies), Trichoptera (Caddisflies), or Plecoptera (Stoneflies), which are the three most important.

The non-arthropod classes are listed on this site only to hold pictures, so far, and I haven't put much information up yet about them.

Platyhelminthes (Flatworms) Flatworm

View 5 PicturesThis specimen is in the subphylum Turbellaria, a non-parasitic flatworm.

Collected June 13, 2019 from in
Added to Troutnut.com by on June 15, 2019

Baetisca obesa (Armored Mayfly) Mayfly Nymph

View 12 Pictures

Collected May 6, 2007 from in
Added to Troutnut.com by on May 10, 2007

Corydalus (Dobsonflies) Hellgrammite Larva

View 27 Pictures

Collected May 29, 2007 from in
Added to Troutnut.com by on June 4, 2007

Female Ephemera guttulata (Green Drake) Mayfly Dun

View 16 PicturesIt's about time I got a green drake on this site!

Collected June 1, 2007 from in
Added to Troutnut.com by on June 4, 2007

Male Ephemera guttulata (Green Drake) Mayfly Spinner

View 12 PicturesThis spinner was the only member of its species I saw all night during an incredibly thick and tricky mixed hatch on Penn's Creek a few days before the real start of its famous green drake hatch.

Collected May 26, 2007 from in
Added to Troutnut.com by on June 4, 2007

Brachycentrus (Grannoms) Caddisfly Pupa

View 10 PicturesThe green blob contained in this case is a pupa in the early stages of transformation from larva to the final stage we generally picture and imitate. This specimen and several like it were fixed to a rock I picked up, and each one had the front of its case sealed off, protecting the helpless pupa from predation. It's neat to see the insect part-way through such a radical transformation.

It was very hard to extract this thing from its case, so there's a bit of extra goo near the head from where I accidentally punctured it.

Collected April 14, 2007 from in
Added to Troutnut.com by on April 22, 2007

Cambaridae Crayfish Juvenile

View 2 Pictures

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

Neophylax (Autumn Mottled Sedges) Caddisfly Adult

View 20 PicturesThis large caddisfly looks really neat close-up.

Collected September 19, 2006 from in
Added to Troutnut.com by on October 4, 2006

See 1255 more specimens...

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.

Pupa: 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.