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Animal Phylum Arthropoda (Arthropods)

Pictures Below

This is page 2 of underwater photos of Arthropoda. Visit the main Arthropoda page for:

  • The behavior and habitat of Arthropoda.
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  • 9 streamside pictures of Arthropoda.

122 Underwater Pictures of Arthropods:

Underwater Photo Page:1234...13
This is my favorite underwater picture so far. It shows a bunch of Simuliidae (black fly) larvae clinging to a rock and swinging in the fast current. There are also at least four visible mayfly nymphs, probably in the family Baetidae.  In this picture: True Fly Family Simuliidae (Black Flies) and Mayfly Family Baetidae (Blue-Winged Olives). From Eighteenmile Creek in Wisconsin.
This is my favorite underwater picture so far. It shows a bunch of Simuliidae (black fly) larvae clinging to a rock and swinging in the fast current. There are also at least four visible mayfly nymphs, probably in the family Baetidae.

In this picture: True Fly Family Simuliidae (Black Flies) and Mayfly Family Baetidae (Blue-Winged Olives).
Date TakenMar 19, 2004
Date AddedJan 25, 2006
AuthorTroutnut
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In this picture: Insect Order Trichoptera (Caddisflies) and Animal Class Gastropoda (Snails). From the Namekagon River in Wisconsin.
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This is a close-up underwater view of a stillborn Ephemerella subvaria (Henrickson) female dun.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson). From the East Branch of the Delaware River in New York.
This is a close-up underwater view of a stillborn (
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.
)
Ephemerella subvaria (Henrickson) female dun.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson).
Date TakenApr 19, 2006
Date AddedApr 22, 2006
AuthorTroutnut
CameraPENTAX Optio WPi
This picture from below shows a stillborn Ephemerella subvaria (Hendrickson) dun drifting on the surface amidst a number of shed pupal skins from Brachycentrus caddisflies which were heavily hatching that day.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Caddisfly Species Brachycentrus appalachia (Apple Caddis). From the East Branch of the Delaware River in New York.
This picture from below shows a stillborn (
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.
)
Ephemerella subvaria (Hendrickson) dun drifting on the surface amidst a number of shed pupal skins from Brachycentrus caddisflies which were heavily hatching that day.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Caddisfly Species Brachycentrus appalachia (Apple Caddis).
Date TakenApr 19, 2006
Date AddedApr 22, 2006
AuthorTroutnut
CameraPENTAX Optio WPi
There are several mayfly and stonefly nymphs clinging to this log.  In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and Stonefly Family Taeniopterygidae (Willowflies). From Eighteenmile Creek in Wisconsin.
There are several mayfly and stonefly nymphs clinging to this log.

In this picture: Mayfly Family Baetidae (Blue-Winged Olives) and Stonefly Family Taeniopterygidae (Willowflies).
Date TakenMar 19, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This Brachycentrus "Apple Caddis" struggled more than its kin in escaping its pupal skin, enabling me to take an underwater picture of it from directly below.  This is sort of a trout's eye view, but I used the flash for the picture so the transparent shuck appears far brighter than it really is.  In this picture: Caddisfly Species Brachycentrus appalachia (Apple Caddis). From the East Branch of the Delaware River in New York.
This Brachycentrus "Apple Caddis" struggled more than its kin in escaping its pupal skin, enabling me to take an underwater picture of it from directly below. This is sort of a trout's eye view, but I used the flash for the picture so the transparent shuck (
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Here's an underwater view of the pupal shucks of several already-emerged Brachycentrus numerosus caddisflies.
Shuck: The shed exoskeleton left over when an insect molts into its next stage or instar. Most often it describes the last nymphal or pupal skin exited during emergence into a winged adult.
)
appears far brighter than it really is.

In this picture: Caddisfly Species Brachycentrus appalachia (Apple Caddis).
Date TakenApr 19, 2006
Date AddedApr 22, 2006
AuthorTroutnut
CameraPENTAX Optio WPi
In this picture: Arthropod Order Decapoda (Crayfish). From the Namekagon River in Wisconsin.
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.  In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun), Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis), and True Fly Family Chironomidae (Midges). From the Namekagon River in Wisconsin.
The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.

In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun), Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis), and True Fly Family Chironomidae (Midges).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Some large Ephemerella mayfly nymphs cling to a log.  In the background, hundreds of Simuliidae black fly larvae swing in large clusters in the current.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson), Mayfly Species Ephemerella invaria (Sulphur Dun), and True Fly Family Simuliidae (Black Flies). From the Namekagon River in Wisconsin.
Some large Ephemerella mayfly nymphs cling to a log. In the background, hundreds of Simuliidae black fly larvae swing in large clusters in the current.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson), Mayfly Species Ephemerella invaria (Sulphur Dun), and True Fly Family Simuliidae (Black Flies).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
Underwater Photo Page:1234...13
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