Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

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

Taxonomic Navigation -?-
» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
Genus in EphemerellidaeNumber of SpecimensNumber of Pictures
Attenella417
Caudatella47
Dannella00
DrunellaBlue-Winged Olives30138
EphemerellaHendricksons, Sulphurs, PMDs129576
EurylophellaChocolate Duns22108
Matriella00
Penelomax325
Serratella00
TeloganopsisLittle black Quills16
Timpanoga25

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 211 Mayfly Specimens in the Family Ephemerellidae:

Specimen Page:1...19202122
Drunella doddsii (Western Green Drake) Mayfly NymphDrunella doddsii (Western Green Drake) Mayfly Nymph View 1 PicturesThis is a photo of the ventral (Ventral: Toward or on the bottom.) surface of this nymph which acts to help hold the nymph on rock surfaces.
Collected July 5, 2007 from Many streams in Montana
Added to Troutnut.com by Bnewell on June 26, 2011
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly DunFemale Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Dun View 2 PicturesI've tentatively called this fragile, highly damaged dun a Serratella species. I had much better pictures of the species but lost them. It's about size 22, but good-sized trout were rising to this hatch; I suspect it has to do with the solid profile shown by the dark, almost-black wings that have given this hatch the name "Darth Vaders" among some Wisconsin anglers.
Collected July 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Drunella doddsii (Western Green Drake) Mayfly NymphDrunella doddsii (Western Green Drake) Mayfly Nymph View 1 PicturesMature nymph.
Collected July 5, 2007 from Many streams in Montana
Added to Troutnut.com by Bnewell on June 26, 2011
Eurylophella (Chocolate Duns) Mayfly NymphEurylophella (Chocolate Duns) Mayfly Nymph View 2 PicturesIt has the segment 4 gill and abdominal segment 9 is longer than segment 8. I couldn't see abdominal 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.
)
, but they may not yet be developed in such an early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.).
Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006
Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly NymphEphemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Nymph View 3 PicturesThis is a really really really really tiny mayfly nymph. It has gills on abdominal segments 3-7 in the characteristic orientation for the Ephemerellidae family, and it has no fain tail as best I can tell, just uniform tail coverage with small black hairs of equal length. I think this one's too young to identify.
Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006
Specimen Page:1...19202122
Top 10 Fly Hatches
Top Gift Shop Designs
Top Insect Specimens
Miscellaneous Sites