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Mayfly Genus Attenella

Pictures Below

This is page 2 of specimens of Attenella. Visit the main Attenella page for:

  • The behavior and habitat of Attenella.

Pictures of 7 Mayfly Specimens in the Genus Attenella:

Specimen Page:12
Female Attenella attenuata (Small Eastern Blue-Winged Olive) Mayfly DunFemale Attenella attenuata (Small Eastern Blue-Winged Olive) Mayfly Dun View 4 PicturesThis dun was badly damaged in transport and all its legs fell off, but I photographed it anyway because I wasn't sure I would fine more and it's an interesting species. Luckily I collected better specimens a few days later.
Collected June 5, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 25, 2006
Attenella margarita (Little Western Blue-Winged Olive) Mayfly NymphAttenella margarita (Little Western Blue-Winged Olive) Mayfly Nymph View 7 PicturesNotes from the microscope on the ID: Maxillary palp (
The palp on the maxilla of an Ephemerella nymph (detached and photographed under a microscope) is highlighted in red here.
The palp on the maxilla of an Ephemerella nymph (detached and photographed under a microscope) is highlighted in red here.
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.
Collected August 3, 2020 from the East Fork Big Lost River in Idaho
Added to Troutnut.com by Troutnut on August 19, 2020
Specimen Page:12
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