Underwater photos from the Namekagon River
Date AddedJun 30, 2006
CameraPENTAX Optio WPi
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).
I took this picture of the underside of a large slab of ice in a northern Wisconsin river in early February. I got cold.
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