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Animal Phylum Arthropoda (Arthropods)

Pictures Below

This is page 4 of underwater photos of Arthropoda. Visit the main Arthropoda page for:

  • The behavior and habitat of Arthropoda.
  • Studio pictures of 1244 Arthropoda specimens.

122 Underwater Pictures of Arthropods:

Underwater Photo Page:1...345...13
Hundreds of cased caddis larvae cling to sparse weed growth in the sand under heavy current.  In this picture: Insect Order Trichoptera (Caddisflies). From Eighteenmile Creek in Wisconsin.
Hundreds of cased caddis larvae cling to sparse weed growth in the sand under heavy current.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenApr 14, 2004
Date AddedJan 25, 2006
AuthorTroutnut
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A peculiar mayfly nymph clings to a log.  I'm not sure if it's a Heptageniid clinger or a flat-bodied Ephemerellid crawler, but I don't believe it's a species I've collected yet.  In this picture: Insect Order Ephemeroptera (Mayflies). From Eighteenmile Creek in Wisconsin.
A peculiar mayfly nymph clings to a log. I'm not sure if it's a Heptageniid clinger or a flat-bodied Ephemerellid crawler, but I don't believe it's a species I've collected yet.

In this picture: Insect Order Ephemeroptera (Mayflies).
Date TakenMar 19, 2004
Date AddedJan 25, 2006
AuthorTroutnut
In this picture: True Bug Family Corixidae (Water Boatmen). From the West Branch of the Delaware River in New York.
Date TakenMay 13, 2007
Date AddedJun 5, 2007
AuthorTroutnut
CameraPENTAX Optio WPi
A variety of cased caddisfly larvae, probably mostly Neophylax, have clustered along the backside of a rock in fast water.  There seem to be some Helicopsychidae larvae clustered along the bottom, and a few other taxa are mixed in.  It's interesting that several larvae have especially large stones placed over the front openings of their cases, perhaps to block the case off for pupation.

It does seem to be the wrong time of year for Neophylax to be pupating, but that was the ID given for one of these which I collected and photographed up close.  In this picture: Caddisfly Genus Helicopsyche (Speckled Peters) and Caddisfly Genus Neophylax (Autumn Mottled Sedges). From Cayuta Creek in New York.
A variety of cased caddisfly larvae, probably mostly Neophylax, have clustered along the backside of a rock in fast water. There seem to be some Helicopsychidae larvae clustered along the bottom, and a few other taxa are mixed in. It's interesting that several larvae have especially large stones placed over the front openings of their cases, perhaps to block the case off for pupation.

It does seem to be the wrong time of year for Neophylax to be pupating, but that was the ID given for one of these which I collected and photographed up close.

In this picture: Caddisfly Genus Helicopsyche (Speckled Peters) and Caddisfly Genus Neophylax (Autumn Mottled Sedges).
LocationCayuta Creek
Date TakenApr 14, 2007
Date AddedMay 3, 2007
AuthorTroutnut
CameraPENTAX Optio WPi
The mayfly and stonefly nymphs in this picture blend in extremely well.  In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Insect Order Plecoptera (Stoneflies). From the Namekagon River in Wisconsin.
The mayfly and stonefly nymphs in this picture blend in extremely well.

In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun) and Insect Order Plecoptera (Stoneflies).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Several Baetid mayfly nymphs cling to this rock.  There are also some clumps of small stones which hold strong caddisfly larvae.  In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and Insect Order Trichoptera (Caddisflies). From Eighteenmile Creek in Wisconsin.
Several Baetid mayfly nymphs cling to this rock. There are also some clumps of small stones which hold strong caddisfly larvae.

In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and Insect Order Trichoptera (Caddisflies).
Date TakenMar 19, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Several caddisfly larvae in their cases cling to the debris in this picture.  In this picture: Insect Order Trichoptera (Caddisflies). From the South Fork of the White River in Wisconsin.
Several caddisfly larvae in their cases cling to the debris in this picture.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenFeb 26, 2004
Date AddedJan 25, 2006
AuthorTroutnut
The caddis larvae in this picture built their cases from tiny pebbles.  In this picture: Insect Order Trichoptera (Caddisflies). From the South Fork of the White River in Wisconsin.
The caddis larvae in this picture built their cases from tiny pebbles.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenFeb 26, 2004
Date AddedJan 25, 2006
AuthorTroutnut
A few caddis larvae cling to this partially submerged clump of streamside grass.  In this picture: Insect Order Trichoptera (Caddisflies). From the South Fork of the White River in Wisconsin.
A few caddis larvae cling to this partially submerged clump of streamside grass.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenFeb 26, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This underwater log hosts hundreds of caddisfly larvae, some in cases and some in spiderweb-like lairs.  In this picture: Insect Order Trichoptera (Caddisflies). From the South Fork of the White River in Wisconsin.
This underwater log hosts hundreds of caddisfly larvae, some in cases and some in spiderweb-like lairs.

In this picture: Insect Order Trichoptera (Caddisflies).
Date TakenFeb 26, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Underwater Photo Page:1...345...13
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