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Animal Kingdom Animalia (Animals)

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This is page 21 of specimens of Animalia. Visit the main Animalia page for:

  • The behavior and habitat of Animalia.
  • 131 underwater pictures of Animalia.

Pictures of 1264 Animal Specimens:

Specimen Page:1...202122...128
Male Hexagenia limbata (Hex) Mayfly DunMale Hexagenia limbata (Hex) Mayfly Dun View 7 Pictures
Collected June 28, 2005 from the White River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006
Gomphidae Dragonfly NymphGomphidae  Dragonfly Nymph View 3 Pictures
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Hydropsyche californica (Spotted Sedge) Caddisfly LarvaHydropsyche californica (Spotted Sedge) Caddisfly Larva View 5 PicturesSize - 14 mm

Condition - preserved

Habitat - cobble bottom, moderate flow run, at a depth of approx. 1 1/2 feet.

Key Characters - pair of large prosternal sclerites (Sclerite: A hard plate of chitinous material, such as those that form the exoskeletons of arthropods, uninterrupted by cracks or sutures.)


This is a very common taxon at this location. I collected using a kick net. In life, it is bright olive green ventrally, shading to a dull olive at its dorsal (Dorsal: Top.) abdominal surfaces. In the hand, the legs, thoraxic regions, and head appear medium chocolate brown. The stark contrast of the thoraxic plate's dark edges and light legs are effects of preserving. The plumouse anal hooks were duck down gray, not the color of the gills as appears in the preserved specimen.

The Lower Yuba River is a good habitat for this species, being a larger river with an open canopy. The Feather River just to the north of the Yuba system also finds H. californica in abundance. The other common Hydropsyche species in the area, Hydropsyche occidentalis, seems to prefer smaller, shaded streams.

Entoman
Collected March 9, 2011 from the Lower Yuba River in California
Added to Troutnut.com by Entoman on November 2, 2011
Sialis Alderfly LarvaSialis  Alderfly Larva View 4 Pictures
Collected February 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
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
Psephenus (Water Pennies) Beetle LarvaPsephenus (Water Pennies) Beetle Larva View 4 PicturesEvery picture of this Psephenidae larva was taken with my old C740UZ through a microscope.
Collected November 15, 2004 from Fall Creek in New York
Added to Troutnut.com by Troutnut on April 12, 2006
Specimen Page:1...202122...128
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