Troutnut.com Fly Fishing for Trout Home
User Password
or register.

Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs)

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 EphemerellaNumber of SpecimensNumber of Pictures
Ephemerella aurivillii730
Ephemerella dorotheaSulphur211
Ephemerella excruciansPale Morning Dun15
Ephemerella invariaSulphur46190
Ephemerella needhamiLittle Dark Hendrickson1786
Ephemerella subvariaHendrickson34162

11 species aren't included.
Common Name
Pictures Below

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

  • The behavior and habitat of Ephemerella.
  • Studio pictures of 119 Ephemerella specimens.
  • 6 streamside pictures of Ephemerella.

37 Underwater Pictures of Ephemerella Mayflies:

Underwater Photo Page:12345
View Full SizeView Full Size (3.1X larger)
AddEmail
RegionUpper Midwest
Date TakenApr 23, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (2.7X larger)
AddEmail
This picture from below shows a stillborn Ephemerella subvaria (Hendrickson) dun drifting on the surface amidst a number of shed pupal skins from Brachycentrus caddisflies which were heavily hatching that day.
This picture from below shows a stillborn (
This stillborn Ephemerella subvaria dun is trapped in its shuck.
This stillborn Ephemerella subvaria dun is trapped in its shuck.
Stillborn: In fly fishing, a stillborn insect is one which got stuck in its nymphal or pupal shuck during emergence and floats helplessly on the surface instead of flying away. It is a specific class of cripple, although it is sometimes used interchangeably with that term.
)
Ephemerella subvaria (Hendrickson) dun drifting on the surface amidst a number of shed pupal skins from Brachycentrus caddisflies which were heavily hatching that day.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Caddisfly Species Brachycentrus appalachia (Apple Caddis).
RegionCatskills
Date TakenApr 19, 2006
Date AddedApr 23, 2006
View Full SizeView Full Size (2.4X larger)
AddEmail
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.
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), and True Fly Family Simuliidae (Black Flies).
RegionUpper Midwest
Date TakenMar 20, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (1.9X larger)
AddEmail
Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae.
Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae.

In this picture: Caddisfly Genus Glossosoma (Little Black Short-Horned Sedges) and Mayfly Species Ephemerella subvaria (Hendrickson).
RegionUpper Midwest
Date TakenMar 20, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (2.5X larger)
AddEmail
The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.
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: Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis), Mayfly Species Ephemerella invaria (Sulphur), and True Fly Family Chironomidae (Midges).
RegionUpper Midwest
Date TakenMar 24, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (3.2X larger)
AddEmail
RegionUpper Midwest
Date TakenMar 24, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (1.3X larger)
AddEmail
An Ephemerella subvaria nymph clings to a white rock in the foreground, and there are other nymphs in the background.
An Ephemerella subvaria nymph clings to a white rock in the foreground, and there are other nymphs in the background.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies).
RegionUpper Midwest
Date TakenMar 20, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (2.5X larger)
AddEmail
This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.
This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.

In this picture: Mayfly Species Ephemerella invaria (Sulphur) and Mayfly Genus Epeorus (Little Maryatts).
RegionUpper Midwest
Date TakenMar 24, 2004
Date AddedJan 25, 2006
View Full SizeView Full Size (2X larger)
AddEmail
This is a close-up underwater view of a stillborn Ephemerella subvaria (Henrickson) female dun.
This is a close-up underwater view of a stillborn (
This stillborn Ephemerella subvaria dun is trapped in its shuck.
This stillborn Ephemerella subvaria dun is trapped in its shuck.
Stillborn: In fly fishing, a stillborn insect is one which got stuck in its nymphal or pupal shuck during emergence and floats helplessly on the surface instead of flying away. It is a specific class of cripple, although it is sometimes used interchangeably with that term.
)
Ephemerella subvaria (Henrickson) female dun.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson).
RegionCatskills
Date TakenApr 19, 2006
Date AddedApr 23, 2006
View Full SizeView Full Size (3.1X larger)
AddEmail
Several well-camouflaged Ephemerella mayfly nymphs cling to this log, and a few cased caddisfly larvae cling to the plant in front of it.
Several well-camouflaged Ephemerella mayfly nymphs cling to this log, and a few cased caddisfly larvae cling to the plant in front of it.

In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Genus Ephemerella (Hendricksons, Sulphurs, PMDs).
RegionUpper Midwest
Date TakenApr 13, 2004
Date AddedJan 25, 2006
Underwater Photo Page:12345
Top 10 Hatches
Top 5 Products
Top 5 Specimens
Recent Updates
Last update July 19th, 2007.
Check out my friend & fishing partner Brad Bohen's Hayward Musky Guides website for fly fishing like you've never seen before! --Troutnut
Misc Websites