**Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

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

» Genus Ephemerella (Hendricksons, Sulphurs, PMDs)

Species in Ephemerella
Ephemerella aurivillii	7	30
Ephemerella dorotheaSulphur	6	34
Ephemerella excruciansPale Morning Dun	1	5
Ephemerella invariaSulphur	43	179
Ephemerella needhamiLittle Dark Hendrickson	16	79
Ephemerella septentrionalis	3	25
Ephemerella subvariaHendrickson	34	162

11 species aren't included.

Common Name

Match	Common Name
	Hendricksons, Sulphurs, PMDs

Pictures Below ↓

This is page 9 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.

123 Mayfly Specimens in the Genus Ephemerella:

Specimen Page:1...8910...13

Ephemerella subvaria (Hendrickson) Mayfly Nymph

View 3 Pictures

Region: Upper Midwest

Collected Jan 31, 2004

Added Jan 25, 2006

Ephemerella aurivillii Mayfly Nymph

View 3 Pictures

Region: Upper Midwest

Collected Feb 5, 2004

Added Jan 25, 2006

Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph

View 2 Pictures

Region: Upper Midwest

Collected Jun 5, 2005

Added May 25, 2006

Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly Spinner

View 3 Pictures

Region: PA Limestone

Collected May 26, 2007

Added Jun 4, 2007

Ephemerella subvaria (Hendrickson) Mayfly Spinner

View 3 Pictures

Region: Upper Midwest

Collected May 19, 2004

Added Jan 25, 2006

Ephemerella aurivillii Mayfly Nymph

View 4 Pictures

Region: Upper Midwest

Collected Feb 5, 2004

Added Jan 25, 2006

Ephemerella subvaria (Hendrickson) Mayfly Nymph

View 3 PicturesHere's another nymph with strange markings subvaria. I suspect it's the same species and it's just wide individual variation.

Region: Upper Midwest

Collected Feb 7, 2004

Added Jan 25, 2006

Ephemerella invaria (Sulphur) Mayfly Dun

View 2 Pictures

Region: Upper Midwest

Collected May 23, 2004

Added Jan 25, 2006

Ephemerella subvaria (Hendrickson) Mayfly Spinner

View 2 Pictures

Region: Upper Midwest

Collected May 16, 2004

Added Jan 25, 2006

Ephemerella subvaria (Hendrickson) Mayfly Dun

View 3 Pictures

Region: Upper Midwest

Collected May 1, 2004

Added Jan 25, 2006

Specimen Page:1...8910...13

Underwater Pictures
Landscapes & Trout
Desktop Backgrounds
Fly Tying Contests^*

Articles & Links
Common Names
Video Clips
Alaska Pictures^*

New features!

Jargon Defined:

Nymph: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).