Insect Order Ephemeroptera (Mayflies)
Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
8 families aren't included.
Common Name
| Match | Common Name |
 | Mayflies |
Fly Imitations by Orvis
| Stage | Fly Pattern |
| Nymph | Hare's Ear |
| Nymph | Pheasant Tail |
| Nymph | RS2 |
| Dun | Adams |
| Dun | CDC Comparadun |
| Dun | Sparkle Dun |
| Spinner | AK's Spinner |
This is page 3 of specimens of Ephemeroptera. Visit the main Ephemeroptera page for:
- The behavior and habitat of Ephemeroptera.
- 67 underwater pictures of Ephemeroptera.
- 32 streamside pictures of Ephemeroptera.
516 Mayfly Specimens:
Epeorus pleuralis (Quill Gordon) Mayfly Dun
View 9 PicturesI kept this specimen after photographing it and it molted into a spinner in perfect condition, which I photographed here.
View 9 PicturesI kept this specimen after photographing it and it molted into a spinner in perfect condition, which I photographed here.Region: Northeast
Collected Apr 30, 2007
Added May 3, 2007
Nixe inconspicua Mayfly Dun
View 13 PicturesThis pretty little dun was part of a sparse midsummer evening hatch on a large Catskill river.
I could not identify it by following a species key step by step, but I tentatively keyed it to the genus Nixe, and based on distribution maps and physical descriptions the most likely species is Nixe inconspicua.
View 13 PicturesThis pretty little dun was part of a sparse midsummer evening hatch on a large Catskill river.I could not identify it by following a species key step by step, but I tentatively keyed it to the genus Nixe, and based on distribution maps and physical descriptions the most likely species is Nixe inconspicua.
Region: Catskills
Collected Jul 13, 2005
Added Apr 14, 2006
Hexagenia atrocaudata (Late Hex) Mayfly Dun
View 14 PicturesI found this lone Hexagenia atrocaudata dun fluttering by herself on the surface of a small, still stretch of river one evening as I paddled home from fishing for smallmouths in the warm August weather.
View 14 PicturesI found this lone Hexagenia atrocaudata dun fluttering by herself on the surface of a small, still stretch of river one evening as I paddled home from fishing for smallmouths in the warm August weather.Region: Upper Midwest
Collected Aug 5, 2005
Added Apr 15, 2006
Ephemerella subvaria (Hendrickson) Mayfly Spinner
View 11 PicturesI collected this beautiful male Hendrickson specimen as a dun, along with a female Hendrickson from the same hatch. Both molted into spinners in my house within a couple of days.
View 11 PicturesI collected this beautiful male Hendrickson specimen as a dun, along with a female Hendrickson from the same hatch. Both molted into spinners in my house within a couple of days.Region: Northeast
Collected Apr 23, 2007
Added Apr 25, 2007
Drunella tuberculata Mayfly Dun
View 14 PicturesI don't know for sure that this is Drunalla tuberculata, but that's my best guess for now.
It certainly has a different look and much more robust body shape from Drunella lata duns I photographed a couple weeks earlier, so I doubt it's that species. Using distribution records to eliminate other choices narrows this down to Drunella tuberculata or Drunella walkeri.
Markings described for the abdominal sternites (Sternite: The bottom (ventral) part of a single segment on an insect's abdomen.) of the male spinner of Drunella tuberculata are suspiciously similar to those on this female dun. Also, this dun is 9.5mm long (my ruler pic isn't very good, but I'm basing this on measuring the real thing). The size range given in the old Allen & Edmunds keys for walkeri females is 7-8mm, while tuberculata is 9-11mm. For these reasons I'm sticking it in tuberculata for now.
This is the only Drunella mayfly I saw all day. I scooped it off the water as it emerged at around 7pm from a big Catskill tailwater.
View 14 PicturesI don't know for sure that this is Drunalla tuberculata, but that's my best guess for now. It certainly has a different look and much more robust body shape from Drunella lata duns I photographed a couple weeks earlier, so I doubt it's that species. Using distribution records to eliminate other choices narrows this down to Drunella tuberculata or Drunella walkeri.
Markings described for the abdominal sternites (Sternite: The bottom (ventral) part of a single segment on an insect's abdomen.) of the male spinner of Drunella tuberculata are suspiciously similar to those on this female dun. Also, this dun is 9.5mm long (my ruler pic isn't very good, but I'm basing this on measuring the real thing). The size range given in the old Allen & Edmunds keys for walkeri females is 7-8mm, while tuberculata is 9-11mm. For these reasons I'm sticking it in tuberculata for now.
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This is the only Drunella mayfly I saw all day. I scooped it off the water as it emerged at around 7pm from a big Catskill tailwater.
Region: Catskills
Collected Jun 1, 2007
Added Jun 8, 2007
Ephemerella invaria (Sulphur) Mayfly Spinner
View 12 Pictures
View 12 PicturesRegion: Upper Midwest
Collected Jun 3, 2005
Added May 25, 2006
Paraleptophlebia adoptiva (Blue Quill) Mayfly Dun
View 14 Pictures
View 14 PicturesRegion: Northeast
Collected Apr 30, 2007
Added May 3, 2007
Ephemerella needhami (Little Dark Hendrickson) Mayfly Spinner
View 12 Pictures
View 12 PicturesRegion: Upper Midwest
Collected Jun 4, 2005
Added May 25, 2006
Maccaffertium vicarium (March Brown) Mayfly Dun
View 10 PicturesI collected this mayfly on the same trip as a female of the same species. After these photos it molted into a spinner. This is the form of Maccaffertium vicarium which anglers call the "Gray Fox."
View 10 PicturesI collected this mayfly on the same trip as a female of the same species. After these photos it molted into a spinner. This is the form of Maccaffertium vicarium which anglers call the "Gray Fox."Region: Upper Midwest
Collected May 28, 2005
Added May 24, 2006
Baetidae (Blue-Winged Olives) Mayfly Spinner
View 12 PicturesThis species is probably in Centroptilum, Cloeon, or Procloeon. I captured this spinner on the same night as a dun which is probably of the same species.
View 12 PicturesThis species is probably in Centroptilum, Cloeon, or Procloeon. I captured this spinner on the same night as a dun which is probably of the same species.Region: Northeast
Collected Aug 9, 2006
Added Aug 11, 2006
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