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Updates from March 20, 2004

Photos by Troutnut from the Namekagon River in Wisconsin

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Several whitetail deer cross the river in front of me in the middle of winter. From the Namekagon River in Wisconsin.
Several whitetail deer cross the river in front of me in the middle of winter.
StateWisconsin
LocationNamekagon River
Date TakenMar 20, 2004
Date AddedJan 25, 2006
AuthorTroutnut
CameraOlympus C740UZ

Underwater photos by Troutnut from the Namekagon River in Wisconsin

There's a large Ephemerella subvaria nymph in the top left. In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun), Insect Order Trichoptera (Caddisflies), and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. An Ephemerella subvaria nymph clings to a white rock in the foreground, and there are other nymphs in the background. In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Insect Order Trichoptera (Caddisflies). 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), True Fly Family Simuliidae (Black Flies), and Mayfly Species Ephemerella invaria (Sulphur Dun). From the Namekagon River in Wisconsin. Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae. In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Saddle-case Maker Genus Glossosoma (Little Brown Short-horned Sedges). 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). 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). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies), Insect Order Plecoptera (Stoneflies), and Insect Order Ephemeroptera (Mayflies). 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). 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). From the Namekagon River in Wisconsin. A large crayfish lurks under a log which is home to several mayfly nymphs and caddisfly larvae. In this picture: Arthropod Order Decapoda (Crayfish), Insect Order Ephemeroptera (Mayflies), and Insect Order Trichoptera (Caddisflies). From the Namekagon River in Wisconsin. A couple Sulphur (Ephemerella invaria) nymphs cling to a log. In this picture: Mayfly Species Ephemerella invaria (Sulphur Dun). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. A large Ephemerella subvaria nymphs clings to a log along with a couple smaller mayfly nymphs. In this picture: Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies) and Mayfly Species Ephemerella subvaria (Hendrickson). From the Namekagon River in Wisconsin. This picture shows some of the intricate homes woven by net-spinning caddis larvae. In this picture: Insect Order Trichoptera (Caddisflies). From the Namekagon River in Wisconsin. In this picture: Insect Order Trichoptera (Caddisflies). From the Namekagon River in Wisconsin. In this picture: Mayfly Species Ephemerella subvaria (Hendrickson) and Mayfly Species Ephemerella invaria (Sulphur Dun). From the Namekagon River in Wisconsin.
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