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Mayfly Family Baetidae (Blue-Winged Olives)

Taxonomic Navigation -?-
» Family Baetidae (Blue-Winged Olives)
Genus in BaetidaeNumber of SpecimensNumber of Pictures
AcentrellaMiniature Blue-Winged Olives37
AcerpennaBlue-Winged Olives13
ApobaetisBlue-Winged Olives00
BaetisBlue-Winged Olives1777
CallibaetisSpeckled Duns613
CentroptilumTiny Sulphur Duns313
CloeonBlue-Winged Olives00
DiphetorBlue-Winged Olives00
IswaeonLittle Olives00
LabiobaetisBlue-Winged Olives00
PlauditusBlue-Winged Olives00
ProcloeonTiny Sulphur Duns11
PseudocloeonBlue-Winged Olives00

13 genera aren't included.
Common Name
MatchCommon Name
***Blue-Winged Olives
Pictures Below ↓

This is page 5 of specimens of Baetidae. Visit the main Baetidae page for:

  • The behavior and habitat of Baetidae.
  • 10 underwater pictures of Baetidae.
  • 1 streamside picture of Baetidae.

Pictures of 75 Mayfly Specimens in the Family Baetidae:

Specimen Page:1...456...9
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 2 Pictures
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Baetidae (Blue-Winged Olives) Mayfly DunFemale Baetidae (Blue-Winged Olives) Mayfly Dun View 3 Pictures
Collected May 22, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Acentrella (Miniature Blue-Winged Olives) Mayfly DunFemale Acentrella (Miniature Blue-Winged Olives) Mayfly Dun View 3 PicturesI've lost the date information for this specimen and taken a guess.
Collected August 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 4 PicturesThis Baetis nymph is quite a bit larger than any of the others I found in winter 2004. Abdomen segment 5 is only slightly pale while 9 and 10 are quite pale. The tail is banded at the tip. Its body measures about 9mm long. It's much larger than the other Baetis specimens I collected, and it has quite well-developed wingpads.

It's most likely a mature nymph from a very early-hatching brood. It comes from the headwaters of a very small, very spring-fed Lake Superior tributary, which wasn't at all frozen despite very frigid temperatures and 3 feet of snow on the ground.
Collected February 5, 2004 from Schacte Creek, Bayfield County in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Baetidae (Blue-Winged Olives) Mayfly DunFemale Baetidae (Blue-Winged Olives) Mayfly Dun View 2 Pictures
Collected May 23, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 3 PicturesThis is the only Baetis nymph I found in my January 31st (read: not sane) sampling in 2004. I looked at this one under my small microscope and wrote down some useful identification features which aren't really visible in the pictures from my camera. This nymph had conspicuous gill veinlets (Veinlet: Short insect wing veins connecting the major longitudinal veins to the wing margin.), a pointed, slender 7th gill, tail bands on the middle and tip, and abdominal segments 5, 9, and 10 are definitely pale, with segment 8 in-between, debatably pale.
Collected January 31, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Baetidae (Blue-Winged Olives) Mayfly DunFemale Baetidae (Blue-Winged Olives) Mayfly Dun View 3 PicturesThis little gal is of the usual size for Baetid mayflies, around size 20. She came with two tails, but it's kind of hard to transport size 20 mayflies without a little bit of damage.
Collected September 2, 2004 from unknown in New York
Added to Troutnut.com by Troutnut on January 25, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 3 PicturesThis Baetid nymph has no tracheation on its gills, no distinct bands on its tails, and a rounded, oval 7th gill. Abdominal segments 5, 9, and 10 are pale.
Collected February 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 4 Pictures
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 3 Pictures
Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Specimen Page:1...456...9
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