Blog & Latest Updates
Fly Fishing Articles
Insects by Common Name

Trout Streams & Rivers
Trout Pictures
Underwater Pictures

Desktop Backgrounds
Stream & Bug Videos
Image Use Pricing

Mayfly Genus Ephemera

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Ephemeridae (Hexes and Big Drakes)

» Genus Ephemera

Species in Ephemera
Ephemera blanda	0	0
Ephemera guttulataGreen Drake	0	0
Ephemera simulansBrown Drake	0	2
Ephemera variaYellow Drake	0	0

1 species isn't included.

Pictures Below ↓

This is page 3 of specimens of Ephemera. Visit the main Ephemera page for:

The behavior and habitat of Ephemera.
2 underwater pictures of Ephemera.

Pictures of 21 Mayfly Specimens in the Genus Ephemera:

Specimen Page:1 23

Ephemera simulans (Brown Drake) Mayfly Nymph

View 4 Pictures

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Female Ephemera varia (Yellow Drake) Mayfly Spinner

View 6 PicturesI found this female spinner ovipositing in a small stream. She came along while I was playing a trout -- every good bug seemed to do that last night! I didn't have my bug net, so I caught the trout in my landing net, released the trout, and caught the mayfly in my landing net. Her wing got a bit messed up from that.

Collected July 7, 2006 from Cayuta Creek in New York
Added to Troutnut.com by Troutnut on July 8, 2006

Ephemera varia (Yellow Drake) Mayfly Nymph

View 4 Pictures

Collected March 29, 2006 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 6, 2006

Ephemera simulans (Brown Drake) Mayfly Nymph

View 3 Pictures

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Ephemera simulans (Brown Drake) Mayfly Nymph

View 3 Pictures

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Male Ephemera simulans (Brown Drake) Mayfly Dun

View 2 Pictures

Collected July 11, 2009 from Flathead Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011

Male Ephemera simulans (Brown Drake) Mayfly Spinner

View 2 PicturesThis one hatched in the middle of July, which is very late for this species.

Collected July 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Ephemera simulans (Brown Drake) Mayfly Nymph

View 2 PicturesHere's an unusually small 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.) nymph.

Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006

Specimen Page:1 23

Jargon Defined:

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.

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).

Ovipositing: To lay eggs.

Spinner: There are two winged stages of adult mayflies. They emerge from the water as duns, molt on land (usually) into their fully mature stage, spinners. As spinners, they mate, lay eggs, and die.

Useful References:

Arbona, Fred Jr. 1989. Mayflies, the Angler, and the Trout. Nick Lyons Books.