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Underwater photos from the Namekagon River

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Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae.  In this picture: Saddle-case Maker Genus Glossosoma (Little Brown Short-horned Sedges) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin.
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
This Ephemerella subvaria (Hendrickson) nymph picture is one of my favorites.  In this picture: Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin.
This Ephemerella subvaria (Hendrickson) nymph picture is one of my favorites.

In this picture: Mayfly Species Ephemerella subvaria (Hendrickson).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
There's a stonefly nymph in the bottom right corner of this picture, but what's really interesting is those white blotches. They're pretty common in my Wisconsin home river river, stuck flat onto the rocks--lots of rocks have a speckled look as a result. They are microcaddis cases, made by larvae of the caddisfly family Hydroptilidae. These are made by larvae of the subfamily Leucotrichiinae, most likely the genus Leucotrichia. They spin little flat oval cases of silk tight and immobile against the rocks.  In this picture: Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis). From the Namekagon River in Wisconsin.
There's a stonefly nymph in the bottom right corner of this picture, but what's really interesting is those white blotches. They're pretty common in my Wisconsin home river river, stuck flat onto the rocks--lots of rocks have a speckled look as a result. They are microcaddis cases, made by larvae of the caddisfly family Hydroptilidae. These are made by larvae of the subfamily Leucotrichiinae, most likely the genus Leucotrichia. They spin little flat oval cases of silk tight and immobile against the rocks.

In this picture: Caddisfly Species Leucotrichia pictipes (Ring Horn Microcaddis).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun). From the Namekagon River in Wisconsin.
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
I took this picture of the underside of a large slab of ice in a northern Wisconsin river in early February.  I got cold. From the Namekagon River in Wisconsin.
I took this picture of the underside of a large slab of ice in a northern Wisconsin river in early February. I got cold.
Date TakenFeb 2, 2004
Date AddedJan 25, 2006
AuthorTroutnut
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
A careful look at this picture reveals at least three water boatmen swimming around.  In this picture: True Bug Family Corixidae (Water Boatmen). From the Namekagon River in Wisconsin.
A careful look at this picture reveals at least three water boatmen swimming around.

In this picture: True Bug Family Corixidae (Water Boatmen).
Date TakenMar 24, 2004
Date AddedJan 25, 2006
AuthorTroutnut
The strange tubes all over this rock house tiny midge larvae.  In this picture: Insect Order Trichoptera (Caddisflies), Insect Order Ephemeroptera (Mayflies), and True Fly Family Chironomidae (Midges). From the Namekagon River in Wisconsin.
The strange tubes all over this rock house tiny midge larvae.

In this picture: Insect Order Trichoptera (Caddisflies), Insect Order Ephemeroptera (Mayflies), and True Fly Family Chironomidae (Midges).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
The top of this stump is covered with mayfly and caddisfly life.  In this picture: Insect Order Trichoptera (Caddisflies) and Insect Order Ephemeroptera (Mayflies). From the Namekagon River in Wisconsin.
The top of this stump is covered with mayfly and caddisfly life.

In this picture: Insect Order Trichoptera (Caddisflies) and Insect Order Ephemeroptera (Mayflies).
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
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