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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
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Insect Order Orthoptera (Grasshoppers and Crickets)

Grasshoppers and crickets are terrestrial insects--the only part of their life cycle spent in the water is the "oops" stage. Grasshoppers are most important to the trout, but crickets may fall into streams as well.

Specimens of the Insect Order Orthoptera

1 Adult

Start a Discussion of Orthoptera

Insect Order Orthoptera (Grasshoppers and Crickets)

Taxonomy
Family in Orthoptera: Acrididae, Gryllidae
31 families (Anastostomatidae, Arcypteridae, Batrachididae, Catantopidae, Charilaidae, Chrotogonidae, Cooloolidae, Cylindrachetidae, Gryllacrididae, Gryllotalpidae, Gryllotalpidae, Lathiceridae, Lentulidae, Mogoplistidae, Myrmecophilidae, Pamphagidae, Pneumoridae, Prophalangopsidae, Proscopiidae, Pyrgomorphidae, Rhaphidophoridae, Rhipipterygidae, Schizodactylidae, Stenopelmatidae, Tetrigidae, Tetrigidae, Tetrigidae, Tettigoniidae, Tettigoniidae, Tridactylidae, and Tridactylidae) aren't included.
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