» Genus Ephemerella (Hendricksons, Sulphurs, PMDs)
11 species aren't included.
This is page 4 of specimens of Ephemerella. Visit the main Ephemerella page for:
- The behavior and habitat of Ephemerella.
- 37 underwater pictures of Ephemerella.
Pictures of 129 Mayfly Specimens in the Genus Ephemerella:
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
View 5 PicturesI took quite a few notes at the microscope when I collected this specimen. They're attached to the appropriate pictures.
I found this specimen in the same collection as a similar one. Since I only have strange views of this one, it's possible that they're actually the same specimen and I somehow confused my picture-ordering and got the impression that they're different nymphs.
Ephemerella aurivillii Mayfly Nymph
View 5 PicturesClose examination under a microscope showed definite small tubercles (
Tubercle: Various peculiar little bumps or projections on an insect. Their character is important for the identification of many kinds of insects, such as the nymphs of Ephemerellidae mayflies.) on the back of this nymph.
A few (not all) of the abdominal tubercles on this Ephemerella needhami
nymph are circled. They are especially large in this species.