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Mayfly Genus Baetis (Blue-Winged Olives)

Taxonomic Navigation -?-
» Genus Baetis (Blue-Winged Olives)
Species in BaetisNumber of SpecimensNumber of Pictures
Baetis bicaudatusBlue-Winged Olive00
Baetis brunneicolorBlue-Winged Rusty Dun00
Baetis flavistrigaDark Blue-Winged Olive11
Baetis intercalarisBlue-Winged Olive00
Baetis tricaudatusBlue-Winged Olive316

18 species aren't included.
Common Names
MatchCommon Name
***Blue-Winged Olives
**BWOs
**Rusty Spinners
**Little Brown Quills
**Little Blue-Winged Olives
**Little Iron Blue Quills
Pictures Below ↓

This is page 2 of specimens of Baetis. Visit the main Baetis page for:

  • The behavior and habitat of Baetis.

Pictures of 17 Mayfly Specimens in the Genus Baetis:

Specimen Page:123
Female Baetis tricaudatus (Blue-Winged Olive) Mayfly DunFemale Baetis tricaudatus (Blue-Winged Olive) Mayfly Dun View 7 PicturesThis female was associated with a male of the same species.
Collected April 3, 2007 from Owasco Inlet in New York
Added to Troutnut.com by Troutnut on April 3, 2007
Male Baetis tricaudatus (Blue-Winged Olive) Mayfly DunMale Baetis tricaudatus (Blue-Winged Olive) Mayfly Dun View 8 PicturesThis male was associated with a female of the same species.
Collected April 3, 2007 from Owasco Inlet in New York
Added to Troutnut.com by Troutnut on April 3, 2007
Female Baetis (Blue-Winged Olives) Mayfly DunFemale Baetis (Blue-Winged Olives) Mayfly Dun View 5 PicturesI found this female in the same area as a male with similar markings, probably of the same species.
Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006
Female Baetis (Blue-Winged Olives) Mayfly SpinnerFemale Baetis (Blue-Winged Olives) Mayfly Spinner View 4 PicturesI captured and photographed this specimen as a dun before she molted into the spinner photographed here. Her wings got a bit torn up in the process.
Collected April 19, 2006 from Mongaup Creek in New York
Added to Troutnut.com by Troutnut on April 21, 2006
Female Baetis (Blue-Winged Olives) Mayfly DunFemale Baetis (Blue-Winged Olives) Mayfly Dun View 4 PicturesI'm guessing this specimen is in the genus Acerpenna because of the very sharp costal process (
The costal process of a Baetidae dun.
The costal process of a Baetidae dun.
Costal process: A bump or point sticking up from the front margin of an insect's wing, usually the rear wing of certain mayflies. It is sometimes called a costal projection.) on her hind wing. I'm guessing pygmaea because it is the most common species.

Editor note: Not Acerpenna. This is most likely Baetis. See comments on this male specimen for rationale. Also compare with the female specimen associated with it.
Collected July 1, 2005 from the Bois Brule River in Wisconsin
Added to Troutnut.com by Troutnut on April 22, 2006
Baetis (Blue-Winged Olives) Mayfly NymphBaetis (Blue-Winged Olives) Mayfly Nymph View 5 Pictures
Collected April 1, 2007 from Mystery Creek #62 in New York
Added to Troutnut.com by Troutnut on April 3, 2007
Baetis (Blue-Winged Olives) Mayfly NymphBaetis (Blue-Winged Olives) Mayfly Nymph View 4 Pictures
Collected April 14, 2007 from Cayuta Creek in New York
Added to Troutnut.com by Troutnut on April 22, 2007
Female Baetis (Blue-Winged Olives) Mayfly DunFemale Baetis (Blue-Winged Olives) Mayfly Dun View 2 Pictures
Collected June 30, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 30, 2011
Baetis flavistriga (Dark Blue-Winged Olive) Mayfly NymphBaetis flavistriga (Dark Blue-Winged Olive) Mayfly Nymph View 1 Pictures
Collected June 19, 2011 from the Kwethluk River in Alaska
Added to Troutnut.com by Bnewell on June 26, 2011
Male Baetis tricaudatus (Blue-Winged Olive) Mayfly SpinnerMale Baetis tricaudatus (Blue-Winged Olive) Mayfly Spinner View 1 Pictures
Collected April 15, 2010 from the Flathead River-Lower in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Specimen Page:123
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