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Arthropod Class Insecta (Insects)



Pictures Below ↓

This is page 81 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...808182...124
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 2 Pictures
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Male Onocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly AdultMale Onocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly Adult View 15 PicturesI first just assumed this was Dicosmoecus based on anglers' conventional wisdom since it's a large orange "October caddis," but Creno set me straight. I should have keyed it out. After another look under the microscope, it lacks an anepisternal wart on the mesopleuron (Mesopleuron: The side of the insect mesothorax, and the part to which the fore wings are attached in mayflies.), which rules out Dicosmoecus. The midtibiae have 2 apical (Apical: Close to the apex; tip or end.) spurs and 1 pre-apical (Apical: Close to the apex; tip or end.) spur, and from there the color pattern of the wing points to Onocosmoecus. The location then narrows the species to unicolor.
Collected September 17, 2020 from the Yakima River in Washington
Added to Troutnut.com by Troutnut on September 19, 2020
Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly NymphParaleptophlebia (Blue Quills and Mahogany Duns) Mayfly Nymph View 6 Pictures
Collected March 29, 2005 from Salmon Creek in New York
Added to Troutnut.com by Troutnut on April 7, 2006
Rhyacophila (Green Sedges) Caddisfly LarvaRhyacophila (Green Sedges) Caddisfly Larva View 7 PicturesDave Ruiter identified this specimen as part of the Rhyacophila betteni group, but with over 20 species it's difficult to narrow down beyond that.
Collected July 25, 2019 from Mystery Creek #249 in Washington
Added to Troutnut.com by Troutnut on July 26, 2019
Male Leptoceridae Caddisfly AdultMale Leptoceridae Caddisfly Adult View 12 Pictures
Collected June 29, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 17, 2019
Odonata-Zygoptera (Damselflies) Damselfly AdultOdonata-Zygoptera (Damselflies) Insect Adult View 8 Pictures
Collected June 30, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 17, 2019
Male Lepidostoma (Little Brown Sedges) Little Brown Sedge AdultMale Lepidostoma (Little Brown Sedges) Little Brown Sedge Adult View 7 PicturesOn an evening filled with millions of caddisflies, this one stood out as the only one of its kind that found its way into my net. Dave Ruiter identified it from the photos as a Lepidostoma specimen in the pluviale species group.
Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Male Ephemerella dorothea infrequens (Pale Morning Dun) Mayfly DunMale Ephemerella dorothea infrequens (Pale Morning Dun) Mayfly Dun View 7 PicturesThis dun was collected in proximity to this spinner.
Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Female Maccaffertium terminatum Mayfly SpinnerFemale Maccaffertium terminatum Mayfly Spinner View 5 PicturesI was able to identify this female because I captured her while she was mating with an identifiable male.
Collected June 7, 2007 from the West Branch of the Delaware River in New York
Added to Troutnut.com by Troutnut on June 8, 2007
Female Ephemerella aurivillii Mayfly DunFemale Ephemerella aurivillii Mayfly Dun View 6 PicturesThis female was collected in proximity to a male that looks like the same species.
Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Specimen Page:1...808182...124
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
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