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Animal Phylum Arthropoda (Arthropods)



Pictures Below ↓

This is page 24 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...232425...126
Ephemerella subvaria (Hendrickson) Mayfly NymphEphemerella subvaria (Hendrickson) Mayfly Nymph View 4 PicturesThese are two common color patterns on Hendrickson nymphs. I suspect that one is male and the other female, but I don't know for sure.
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Acroneuria lycorias (Golden Stone) Stonefly NymphAcroneuria lycorias (Golden Stone) Stonefly Nymph View 4 PicturesThe presence of anal gills, large dark spot in the center of the pale occipital bar point to lycorias.
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Tipulidae (Crane Flies) Crane Fly LarvaTipulidae (Crane Flies) True Fly Larva View 4 Pictures
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Cambaridae Crayfish AdultCambaridae Crayfish Adult View 4 Pictures
Collected January 31, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetisca laurentina (Armored Mayfly) Mayfly NymphBaetisca laurentina (Armored Mayfly) Mayfly Nymph View 4 Pictures
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Hexagenia limbata (Hex) Mayfly DunFemale 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
Ephemerella subvaria (Hendrickson) Mayfly NymphEphemerella subvaria (Hendrickson) Mayfly Nymph View 4 Pictures
Collected January 13, 2004 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Baetisca (Armored Mayflies) Mayfly NymphBaetisca (Armored Mayflies) Mayfly Nymph View 4 PicturesI've only got blurry pictures of this small Baetisca nymph, because it was zooming around the container in a frenzy. Several characteristics, if taken literally, suggest that it may be Baetisca lacustris. However, it's very small and it's the only candidate lacustris I collected among several laurentina specimens, so it's possible this is just an underdeveloped early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.) laurentina.
Collected January 14, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Female Drunella cornuta (Large Blue-Winged Olive) Mayfly SpinnerFemale Drunella cornuta (Large Blue-Winged Olive) Mayfly Spinner View 6 Pictures
Collected May 27, 2007 from Brodhead Creek in Pennsylvania
Added to Troutnut.com by Troutnut on June 4, 2007
Isoperla (Stripetails and Yellow Stones) Stonefly NymphIsoperla (Stripetails and Yellow Stones) Stonefly Nymph View 4 Pictures
Collected February 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 2006
Specimen Page:1...232425...126
Top 10 Fly Hatches
BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
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