Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs)
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Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)
» Genus Ephemerella (Hendricksons, Sulphurs, PMDs)
11 species aren't included.
Common Name
| Match | Common Name |
 | Hendricksons, Sulphurs, PMDs |
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.
- 6 streamside pictures of Ephemerella.
119 Mayfly Specimens in the Genus Ephemerella:
Ephemerella subvaria (Hendrickson) Mayfly Dun
View 5 Pictures
View 5 PicturesRegion: Upper Midwest
Collected May 1, 2004
Added Jan 25, 2006
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
View 4 PicturesThis specimen was collected together with a darker one of the same species.
View 4 PicturesThis specimen was collected together with a darker one of the same species.Region: Catskills
Collected Apr 19, 2006
Added Apr 21, 2006
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.
View 5 PicturesClose examination under a microscope showed definite small tubercles (
View Full SizeA 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 5, 2004
Added Jan 25, 2006
Ephemerella subvaria (Hendrickson) Mayfly Dun
View 4 Pictures
View 4 PicturesRegion: Upper Midwest
Collected May 1, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) Mayfly Spinner
View 4 Pictures
View 4 PicturesRegion: Upper Midwest
Collected May 28, 2005
Added May 24, 2006
Ephemerella invaria (Sulphur) Mayfly Nymph
View 4 Pictures
View 4 PicturesRegion: Northeast
Collected Mar 13, 2005
Added Apr 5, 2006
Ephemerella invaria (Sulphur) Mayfly Spinner
View 5 Pictures
View 5 PicturesRegion: PA Limestone
Collected May 26, 2007
Added Jun 4, 2007
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
View 5 PicturesThis specimen strikingly resembles another specimen from about 1300 miles away in the Catskills, which I tentatively called Ephemerella aurivillii. This one has much more prominent abdominal 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.). It may be that they're both the same species and I don't have my identifications straight.
View 5 PicturesThis specimen strikingly resembles another specimen from about 1300 miles away in the Catskills, which I tentatively called Ephemerella aurivillii. This one has much more prominent abdominal 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 Jun 5, 2005
Added May 25, 2006
Ephemerella subvaria (Hendrickson) Mayfly Dun
View 5 PicturesThis one hatched around 2 pm on opening day of trout season.
View 5 PicturesThis one hatched around 2 pm on opening day of trout season.Region: Upper Midwest
Collected May 1, 2004
Added Jan 25, 2006
Ephemerella invaria (Sulphur) Mayfly Dun
View 4 Pictures
View 4 PicturesRegion: Upper Midwest
Collected May 22, 2004
Added Jan 25, 2006
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