Troutnut.com Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

Mayfly Family Baetidae (Blue-Winged Olives)



Pictures Below ↓

This is page 4 of specimens of Baetidae. Visit the main Baetidae page for:

  • The behavior and habitat of Baetidae.
  • 10 underwater pictures of Baetidae.

Pictures of 103 Mayfly Specimens in the Family Baetidae:

Specimen Page:1...345...11
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 Callibaetis (Speckled Spinners) Mayfly DunFemale Callibaetis (Speckled Spinners) Mayfly Dun View 2 PicturesProbably Callibaetis ferrugineus.
Collected May 25, 2005 from Flathead Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Female Callibaetis undatus (Speckled Spinner) Mayfly SpinnerFemale Callibaetis undatus (Speckled Spinner) Mayfly Spinner View 2 Pictures
Collected May 26, 2005 from the Flathead River-lower in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Callibaetis (Speckled Spinners) Mayfly DunCallibaetis (Speckled Spinners) Mayfly Dun View 2 Pictures
Collected May 30, 2005 from the S. Fk. Milk River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Anafroptilum conturbatum (Tiny Sulphur Dun) Mayfly NymphAnafroptilum conturbatum (Tiny Sulphur Dun) Mayfly Nymph View 2 PicturesA moderately rare mayfly perhaps because the nymphs are fragile that nymphs are usually damaged in collection making identification more difficult.
Collected July 12, 2007 from Bowman Lake in Montana
Added to Troutnut.com by Bnewell on June 26, 2011
Female Anafroptilum album (Tiny Sulphur Dun) Mayfly DunFemale Anafroptilum album (Tiny Sulphur Dun) Mayfly Dun View 3 PicturesApprox. 5 mm. This is a very significant hatch. It is mostly seen at the height of Summer and I was very surprised to see it emerging this late in the season and in such numbers. When this one is emerging, the fish can become quite selective.
Collected November 9, 2011 from the Fall River in California
Added to Troutnut.com by Entoman on December 10, 2011
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
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 3 PicturesThis specimen has indistinct gill veinlets (Veinlet: Short insect wing veins connecting the major longitudinal veins to the wing margin.), a rounded seventh gill, and no bands on the tails.
Collected February 7, 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 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
Specimen Page:1...345...11
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
Top Gift Shop Designs
I outfish my daddy!Electric blue Hendrickson dun.I love buggers. Big, green, wooly ones.I outfish my husband!Be the trout.
Eat mayflies.
Top Insect Specimens
Baetisca obesa Mayfly NymphCorydalus Hellgrammite LarvaNeophylax Caddisfly AdultPteronarcys biloba Stonefly NymphRhyacophila fuscula Caddisfly Larva
Miscellaneous Sites
Dalton Highway (Haul Road) Corridor Map