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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.

The Clark's Fork of the Yellowstone River in Wyoming

Stream photos

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Tricorythodes (Trico) Mayfly NymphTricorythodes (Trico) Mayfly Nymph
Dorsal view of a Tricorythodes (Leptohyphidae) (Trico) Mayfly Nymph from Mystery Creek #308 in Washington
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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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Caddisfly Species Grammotaulius lorettae (Northern Caddisflies)

Where & when

In 5 records from GBIF, adults of this species have been collected during August (60%), July (20%), and November (20%).

In 2 records from GBIF, this species has been collected at elevations of 9295 and 10007 ft.

Species Range
Map of specific collection sites

Specimens of the Caddisfly Species Grammotaulius lorettae

1 Female Adult
Female Grammotaulius lorettae (Northern Caddisfly) Caddisfly Adult
8 Pictures
Lateral view of a Female Grammotaulius lorettae (Limnephilidae) (Northern Caddisfly) Caddisfly Adult from the Henry's Fork of the Snake River in Idaho
Added by Troutnut on June 12, 2019
Collected August 10, 2018 from the Henry's Fork of the Snake River in Idaho and added by Troutnut on June 12, 2019

Start a Discussion of Grammotaulius lorettae

Caddisfly Species Grammotaulius lorettae (Northern Caddisflies)

Taxonomy
  1. Kingdom Animalia (Animals)
  2. » Phylum Arthropoda (Arthropods)
  3. » Class Insecta (Insects)
  4. » Order Trichoptera (Caddisflies)
  5. » Family Limnephilidae (Giant Sedges)
  6. » Genus Grammotaulius (Northern Caddisflies)
  7. » Species lorettae (Northern Caddisflies)
Species Range
Map of specific collection sites
Common Name
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