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Animal Phylum Arthropoda (Arthropods)



Pictures Below

This is page 118 of specimens of Arthropoda. Visit the main Arthropoda page for:

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

Pictures of 1243 Arthropod Specimens:

Specimen Page:1...117118119...125
Hexatoma True Fly LarvaHexatoma  True Fly Larva View 5 Pictures
Collected July 4, 2020 from Mystery Creek #249 in Washington
Added to Troutnut.com by Troutnut on July 12, 2020
Maccaffertium modestum (Cream Cahill) Mayfly NymphMaccaffertium modestum (Cream Cahill) Mayfly Nymph View 2 PicturesI looked at this nymph closely under my crappy microscope. It has truncate (Truncate: Cut off. This is often used to describe the square appearance of the gills of Maccaffertium mayfly nymphs, for example, as opposed to the pointed gills of the closely related genus Stenacron.) as opposed to rounded gills, postero-lateral (Lateral: To the side.) spines only on abdominal segments 7-9, and oblique crossbars through the center of each sterna, not on the posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") edge like on some of the other Maccaffertium species. As best I can tell from the keys this is either modestum or ithaca and from the distribution maps I've seen I'm guessing it's modestum.
Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006
Female Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly AdultFemale Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly Adult View 1 PicturesThis female exhibits the dark chocolate color so common in this genus.
Collected June 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011
Formicidae (Ants) Ant AdultFormicidae (Ants) Insect Adult View 2 Pictures
Collected June 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011
Kathroperla perdita (Sallfly) Stonefly NymphKathroperla perdita (Sallfly) Stonefly Nymph View 1 PicturesThis species is uncommonly collected except from wells. It is a hyporheic species living in the river gravels of river floodplains until it is ready to emerge.
The head shape is an important identifier.
Collected April 15, 2010 from the Flathead River-upper in Montana
Added to Troutnut.com by Bnewell on June 26, 2011
Specimen Page:1...117118119...125
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