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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 Olives30137
EphemerellaHendricksons, Sulphurs, PMDs129576
EurylophellaChocolate Duns22108
Matriella00
Penelomax325
Serratella00
TeloganopsisLittle black Quills16
Timpanoga25

3 genera aren't included.
Common Name
Pictures Below

This is page 2 of underwater photos of Ephemerellidae. Visit the main Ephemerellidae page for:

  • The behavior and habitat of Ephemerellidae.
  • Studio pictures of 211 Ephemerellidae specimens.
  • 1 streamside picture of Ephemerellidae.

37 Underwater Pictures of Ephemerellidae Mayflies:

Underwater Photo Page:12345
The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.  In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun), Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis), and True Fly Family Chironomidae (Midges). From the Namekagon River in Wisconsin.
The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.

In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun), Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis), and True Fly Family Chironomidae (Midges).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Some large Ephemerella mayfly nymphs cling to a log.  In the background, hundreds of Simuliidae black fly larvae swing in large clusters in the current.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson), Mayfly Species Ephemerella invaria (Sulphur Dun), and True Fly Family Simuliidae (Black Flies). From the Namekagon River in Wisconsin.
Some large Ephemerella mayfly nymphs cling to a log. In the background, hundreds of Simuliidae black fly larvae swing in large clusters in the current.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson), Mayfly Species Ephemerella invaria (Sulphur Dun), and True Fly Family Simuliidae (Black Flies).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae.  In this picture: Saddle-case Maker Genus Glossosoma (Little Brown Short-horned Sedges) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin.
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This Ephemerella subvaria (Hendrickson) nymph picture is one of my favorites.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin.
This Ephemerella subvaria (Hendrickson) nymph picture is one of my favorites.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun). From the Namekagon River in Wisconsin.
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
The mayfly and stonefly nymphs in this picture blend in extremely well.  In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Insect Order Plecoptera (Stoneflies). From the Namekagon River in Wisconsin.
The mayfly and stonefly nymphs in this picture blend in extremely well.

In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Insect Order Plecoptera (Stoneflies).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.  In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Mayfly Genus Epeorus (Little Maryatts). From the Namekagon River in Wisconsin.
This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.

In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Mayfly Genus Epeorus (Little Maryatts).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
There are several species of caddisfly larvae and Ephemerella nymphs on this rock.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies). From the Namekagon River in Wisconsin.
There are several species of caddisfly larvae and Ephemerella nymphs on this rock.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Underwater Photo Page:12345
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