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Animal Phylum Arthropoda (Arthropods)



Pictures Below ↓

This is page 14 of specimens of Arthropoda. Visit the main Arthropoda page for:

  • The behavior and habitat of Arthropoda.
  • 122 underwater pictures of Arthropoda.

Pictures of 1244 Arthropod Specimens:

Specimen Page:1...131415...126
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 7 PicturesThis Isonychia bicolor nymph from the Catskills displays the prominent white stripe sometimes characteristic of its species. This is the first such specimen I've photographed, because members of the same species in the Upper Midwest have a more subdued stripe (and were once thought to be a different species, Isonychia sadleri). The striking coloration on this eastern nymph is more appealing.
Collected April 19, 2006 from the Beaverkill River in New York
Added to Troutnut.com by Troutnut on April 21, 2006
Male Siphlonurus quebecensis (Gray Drake) Mayfly SpinnerMale Siphlonurus quebecensis (Gray Drake) Mayfly Spinner View 10 Pictures
Collected June 2, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 24, 2006
Nigronia serricornis (Fishfly) Hellgrammite LarvaNigronia serricornis (Fishfly) Hellgrammite Larva View 5 Pictures
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Epeorus vitreus (Sulphur) Mayfly NymphEpeorus vitreus (Sulphur) Mayfly Nymph View 6 Pictures
Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly NymphEphemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph View 6 PicturesThis pretty Ephemerella nymph has really weird markings. It has one band on the tibiae (
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
The tibia of this Isonychia bicolor mayfly spinner is highlighted in red.
Tibia: A middle segments in the leg of an insect, located between the femur and the tarsus.) and a thin but distinct dorsal (Dorsal: Top.) stripe faded in the center which looks very different from the stripes on Ephemerella needhami and Ephemerella aurivillii. It definitely has the fan tail characteristic of the Ephemerella genus.
Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Cinygmula (Dark Red Quills) Mayfly NymphCinygmula (Dark Red Quills) Mayfly Nymph View 7 PicturesThis very strange nymph appears to be undoubtedly Cinygmula, yet it lacks the telltale protruding mouthparts that usually make that genus so easy to identify.
Collected July 17, 2011 from the Gulkana River in Alaska
Added to Troutnut.com by Troutnut on July 20, 2011
Chimarra (Little Black Sedges) Caddisfly LarvaChimarra (Little Black Sedges) Caddisfly Larva View 6 Pictures
Collected March 30, 2007 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 2, 2007
Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly NymphParaleptophlebia (Blue Quills and Mahogany Duns) Mayfly Nymph View 6 Pictures
Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Male Cinygmula ramaleyi (Small Western Gordon Quill) Mayfly AdultMale Cinygmula ramaleyi (Small Western Gordon Quill) Mayfly Adult View 4 PicturesAdults were collected from the North Fork of the Touchet River at Touchet Corral, 21 Sept. One photo is the swarm of males over the stream about 3 PM, air temp about 66 degree.
Collected September 21, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on September 23, 2011
Heptagenia pulla (Golden Dun) Mayfly NymphHeptagenia pulla (Golden Dun) Mayfly Nymph View 8 PicturesLike most Alaskan mayflies, this one is tricky to identify to the species level. See the discussion section for an informative chat about this one's ID. The current leaning is to call it a fairly immature Heptagenia pulla nymph, but a case has been made for Heptagenia elegantula as well.
Collected July 10, 2011 from Nome Creek in Alaska
Added to Troutnut.com by Troutnut on July 13, 2011
Specimen Page:1...131415...126
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BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeEphemerella subvariaHeptageniidaeEphemerellaIsonychiaHydropsychidae
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Baetisca obesa Mayfly NymphNeophylax Caddisfly AdultBaetis Mayfly DunCorydalus Hellgrammite LarvaIsonychia bicolor Mayfly Spinner
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