Little Western Blue-Winged Olives
This common name refers to only one species.
These are sometimes called Little Western Blue-Winged Olives.
Though having a national distribution, this species is considered by angling authorities to be important only in the West. In localized waters where it is abundant, it can be a significant hatch.
Attenella margarita (Little Western Blue-Winged Olive) Mayfly Nymph
View 7 PicturesNotes from the microscope on the ID: Maxillary palp (
Palp: A long, thin, often segmented appendage which can protrude from certain insect mouth parts such as the maxillae. Also known as the < />palpus.) is present, distinctly 2-segmented, but very small. Gills on segment 4-7. This specimen has some unfortunate damage to the abdomen, but it's the only one I found in my sample.
The palp on the maxilla of an Ephemerella
nymph (detached and photographed under a microscope) is highlighted in red here.
Collected August 3, 2020
from in Added to Troutnut.com by on August 19, 2020