Mayfly Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
| Genus in Ephemerellidae |  |  |
| Attenella | 5 | 28 |
| Caudatella | 0 | 0 |
| Dannella | 0 | 0 |
| DrunellaBlue-Winged Olives | 8 | 60 |
| EphemerellaHendricksons, Sulphurs, PMDs | 123 | 563 |
| EurylophellaChocolate Duns | 14 | 57 |
| Serratella | 1 | 6 |
| Timpanoga | 0 | 0 |
2 genera aren't included.
Common Name
| Match | Common Name |
 | Hendricksons, Sulphurs, PMDs, BWOs |
This is page 13 of specimens of Ephemerellidae. Visit the main Ephemerellidae page for:
- The behavior and habitat of Ephemerellidae.
- 37 underwater pictures of Ephemerellidae.
- 9 streamside pictures of Ephemerellidae.
165 Mayfly Specimens in the Family Ephemerellidae:
Ephemerella needhami (Little Dark Hendrickson) Mayfly Spinner
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Jun 14, 2005
Added May 26, 2006
Ephemerella invaria (Sulphur) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Mar 10, 2004
Added Jan 19, 2006
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph
View 2 PicturesHere's a puzzling nymph. It seemed to have double-banded tibiae (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 (
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.
View 2 PicturesHere's a puzzling nymph. It seemed to have double-banded tibiae (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 (
View Full Size
A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Mar 10, 2004
Added Jan 19, 2006
Ephemerella invaria (Sulphur) Mayfly Dun
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected May 23, 2004
Added Jan 25, 2006
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected Jun 5, 2005
Added May 25, 2006
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph
View 3 PicturesI confirmed with the microscope that this specimen has very 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.), strongly double-banded tibiae (Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.), and a fan tail.
View 3 PicturesI confirmed with the microscope that this specimen has very small tubercles (A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Mar 10, 2004
Added Jan 19, 2006
Ephemerella subvaria (Hendrickson) Mayfly Spinner
View 2 Pictures
View 2 PicturesRegion: Upper Midwest
Collected May 16, 2004
Added Jan 25, 2006
Ephemerella subvaria (Hendrickson) Mayfly Nymph
View 3 PicturesThis is another peculiar brownish Ephemerella. It has double-banded tibiae (Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.) and prominent black-fringed 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.).
View 3 PicturesThis is another peculiar brownish Ephemerella. It has double-banded tibiae (Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.) and prominent black-fringed tubercles (A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Feb 7, 2004
Added Jan 25, 2006
Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Dun
View 2 Pictures
View 2 PicturesRegion: Catskills
Collected Aug 24, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) Mayfly Nymph
View 3 PicturesI confirmed with the microscope that this nymph has 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.), single-banded tibiae (Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.), and a fan tail.
View 3 PicturesI confirmed with the microscope that this nymph has small tubercles (A few (not all) of the abdominal tubercles on this Ephemerella needhami nymph are circled. They are especially large in this species.
Region: Upper Midwest
Collected Mar 10, 2004
Added Jan 25, 2006
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