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Animal Phylum Arthropoda (Arthropods)



Pictures Below ↓

This is page 59 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...585960...126
Hexagenia limbata (Hex) Mayfly NymphHexagenia limbata (Hex) Mayfly Nymph View 2 Pictures
Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Male Maccaffertium modestum (Cream Cahill) Mayfly SpinnerMale Maccaffertium modestum (Cream Cahill) Mayfly Spinner View 4 Pictures
Collected August 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Siphlonurus occidentalis (Gray Drake) Mayfly SpinnerSiphlonurus occidentalis (Gray Drake) Mayfly Spinner View 4 Pictures
Collected July 31, 2007 from Crazy Beaver Spring in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Maccaffertium vicarium (March Brown) Mayfly NymphMaccaffertium vicarium (March Brown) Mayfly Nymph View 2 Pictures
Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Ephemerella dorothea infrequens (Pale Morning Dun) Mayfly NymphEphemerella dorothea infrequens (Pale Morning Dun) Mayfly Nymph View 2 PicturesHabitat: Shallow riffle over cobble; approx. 1 ft. deep
Size: 8.5 mm. Mature specimens have been captured as large as 10.5 mm.
Emergence schedule: Variable - starting as early as mid March and lasting as late as early June, depending on the year. Usual duration is at least several weeks or more.
Dun Association: Body is elusive pale creamy yellow w/ orange highlights, cream legs and tails, and dun wings
Specimen status in photo: Preserved
Collection method: Kick net

Comments: Extremely common in samples taken from this location. It's color in life was very close to as depicted in the photo; except for the gradual darkening of the abdominal segments as they progress posteriorly, which has been accentuated somewhat by the effects of preservation. Adult association is based upon capture of this taxon at various stages of emergence including: darkened wingcases, split thoraxic notums, and partially ecloded or ''stillborn (
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This stillborn Ephemerella subvaria dun is trapped in its shuck.
This stillborn Ephemerella subvaria dun is trapped in its shuck.
Stillborn: In fly fishing, a stillborn insect is one which got stuck in its nymphal or pupal shuck during emergence and floats helplessly on the surface instead of flying away. It is a specific class of cripple, although it is sometimes used interchangeably with that term.)'' specimens.

Entoman
Collected March 21, 2011 from the Lower Yuba River in California
Added to Troutnut.com by Entoman on November 1, 2011
Ephemerella aurivillii Mayfly NymphEphemerella aurivillii Mayfly Nymph View 3 PicturesI have collected this species in Montana but it is very common in Alaska streams.
Collected June 19, 2010 from the Kwethluk River in Alaska
Added to Troutnut.com by Bnewell on June 26, 2011
Baetidae (Blue-Winged Olives) Mayfly NymphBaetidae (Blue-Winged Olives) Mayfly Nymph View 2 Pictures
Collected March 1, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Onocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly AdultOnocosmoecus unicolor (Great Late-Summer Sedge) Caddisfly Adult View 2 Pictures
Collected October 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on October 11, 2011
Neoleptophlebia Mayfly NymphNeoleptophlebia Mayfly Nymph View 3 Pictures
Collected June 16, 2005 from the Vermillion River in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Formicidae (Ants) Ant AdultFormicidae (Ants) Insect Adult View 3 PicturesThis tiny size 24 flying ant was mixed with a larger variety (see this specimen) falling on the surface of a Catskill river. The trout seemed to respond well to ants of both sizes.
Collected September 5, 2006 from the Neversink River in New York
Added to Troutnut.com by Troutnut on October 3, 2006
Specimen Page:1...585960...126
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