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Mayfly Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)

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» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
Genus in EphemerellidaeNumber of SpecimensNumber of Pictures
Attenella417
Caudatella47
Dannella00
DrunellaBlue-Winged Olives37173
EphemerellaHendricksons, Sulphurs, PMDs136627
EurylophellaChocolate Duns22108
Matriella00
Penelomax325
Serratella00
TeloganopsisLittle black Quills16
Timpanoga311

3 genera aren't included.
Common Name
Pictures Below

This is page 22 of specimens of Ephemerellidae. Visit the main Ephemerellidae page for:

  • The behavior and habitat of Ephemerellidae.
  • 37 underwater pictures of Ephemerellidae.
  • 1 streamside picture of Ephemerellidae.

Pictures of 230 Mayfly Specimens in the Family Ephemerellidae:

Specimen Page:1...21222324
Male Drunella (Blue-Winged Olives) Mayfly DunMale Drunella (Blue-Winged Olives) Mayfly Dun View 3 Pictures
Collected July 7, 2019 from the Ruby River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly NymphEphemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph View 2 PicturesI only took two partial pictures of this specimen to test out one of my microscopes.
Collected November 15, 2004 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 12, 2006
Ephemerella excrucians (Pale Morning Dun) Mayfly NymphEphemerella excrucians (Pale Morning Dun) Mayfly Nymph View 2 PicturesThis mature nymph is associated with the dun from the same location and date posted on this hatch page. Size 10mm.
Collected November 12, 2011 from the Fall River in California
Added to Troutnut.com by Entoman on December 15, 2011
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly NymphEphemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph View 2 PicturesHere's a puzzling nymph. It seemed to have double-banded tibiae (
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.
)
, although the second band wasn't very pronounced. It has quite prominent tubercles (
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled.  They are especially large in this species.
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
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.
)
that definitely aren't black.
Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006
Specimen Page:1...21222324
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