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.
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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.
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Stonefly Species Isoperla bilineata (Yellow Sallies)
This is a common olive brown species.
Species Range
Egg-Laying behavior
Time of day: Evening
Start a Discussion of Isoperla bilineata
References
- Swisher, Doug and Carl Richards. 2000. Selective Trout. The Lyons Press.
Stonefly Species Isoperla bilineata (Yellow Sallies)
Species Range
Common Names
Resources
- NatureServe
- Integrated Taxonomic Information System
- Global Biodiversity Information Facility
- Described by Say, T. (1823) Description of insects belonging to the order Neuroptera Linn., Latr. Collected by the Expedition authorized by J.C. Calhoun, Secretary of War, under the command of Maior S.H. Long. The Western quarterly reporter of medical, surgical, and natural science 2, 160–165.