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Arthropod Class Insecta (Insects)



Pictures Below ↓

This is page 67 of specimens of Insecta. Visit the main Insecta page for:

  • The behavior and habitat of Insecta.
  • 114 underwater pictures of Insecta.

Pictures of 1229 Insect Specimens:

Specimen Page:1...666768...124
Pteronarcys californica (Giant Salmonfly) Stonefly NymphPteronarcys californica (Giant Salmonfly) Stonefly Nymph View 9 Pictures
Collected July 2, 2019 from the Gallatin River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Isocapnia integra (Little Snowfly) Stonefly NymphIsocapnia integra (Little Snowfly) Stonefly Nymph View 1 Pictures
Collected December 19, 2009 from the Flathead River-upper in Montana
Added to Troutnut.com by Bnewell on June 26, 2011
Male Ephemerella aurivillii Mayfly DunMale Ephemerella aurivillii Mayfly Dun View 7 PicturesThis dun was collected in proximity to this spinner, and to this female that looks like the same species.

Among western species, it most closely resembles Ephemerella aurivillii, of which I reared a specimen from a positively-identified nymph and photographed the male dun previously in Alaska. In the photos, this dun does not seem to have the same evidence of the nymph's dorsal (Dorsal: Top.) stripe, but that's due to the lighting. A faint stripe is apparent under the microscope, as it is in the female linked above.

They do appear to be a bit short for aurivillii, with the male at 8 mm and the female at 9 mm, but the spinners could be a bit longer.

Among the other Ephemerella mayflies documented in Montana, Ephemerella alleni and Ephemerella mucronata are the only two others that seem to not be ruled out.
Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Chironomidae (Midges) Midge LarvaChironomidae (Midges) True Fly Larva View 1 Pictures
Collected January 31, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Male Drunella spinifera (Western Slate Olive Dun) Western Slate Olive Dun SpinnerMale Drunella spinifera (Western Slate Olive Dun) Mayfly Spinner View 2 Pictures
Collected July 9, 2007 from Fern Creek in Montana
Added to Troutnut.com by Bnewell on June 29, 2011
Male Ephemera simulans (Brown Drake) Mayfly DunMale Ephemera simulans (Brown Drake) Mayfly Dun View 2 Pictures
Collected July 11, 2009 from Flathead Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Female Hexagenia limbata (Hex) Mayfly SpinnerFemale Hexagenia limbata (Hex) Mayfly Spinner View 2 PicturesI found this Hexagenia limbata spinner on a gas station in upstate New York, not a region known for heavy hatches of this species.
Collected July 13, 2005 from Gas station in Whitney Point, NY in New York
Added to Troutnut.com by Troutnut on April 14, 2006
Sweltsa fidelis (Sallfly) Stonefly AdultSweltsa fidelis (Sallfly) Stonefly Adult View 2 Pictures
Collected July 14, 2011 from Swamp Creek in Oregon
Added to Troutnut.com by Bnewell on July 14, 2011
Cinygma (Western Light Cahills) Mayfly NymphCinygma (Western Light Cahills) Mayfly Nymph View 2 Pictures
Collected July 14, 2011 from Swamp Creek in Oregon
Added to Troutnut.com by Bnewell on July 14, 2011
Ameletus celer (Brown Dun) Mayfly NymphAmeletus celer (Brown Dun) Mayfly Nymph View 2 Pictures
Collected July 14, 2011 from Swamp Creek in Oregon
Added to Troutnut.com by Bnewell on July 15, 2011
Specimen Page:1...666768...124
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
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Top Insect Specimens
Baetisca obesa Mayfly NymphCorydalus Hellgrammite LarvaNeophylax Caddisfly AdultRhyacophila fuscula Caddisfly LarvaPteronarcys biloba Stonefly Nymph
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