Wednesday, December 23, 2009


Here is the first caddisfly, order Trichoptera, which I have managed to identify, only the second one I've collected. General consensus is that it is a northern caddisfly of family Limnephilidae. Their characteristics include ocelli, head and wings with silky hairs, tan forewings with long silver stripes. Like other caddisflies, they construct cylindrical tubes, sometimes called "log cabin cases," with long, dead leaf pieces and twig fragments. Caddisflies also use small pebbles, dirt, and man-made items - some rear caddisflies so they will make unique jewelery, while others imitate them to make fly fishing lures (caddisflies are apparently very delicious to fish, as are mayflies, dragonflies, etc.).

Trichoptera; Limnephilidae; Psychoglypha sp.
Common Name: Northern Caddisfly

It belongs to the genus Psychoglypha. It was found in North Lake Tahoe, Carnelian Bay, on a patch of snow at night. Per a source from bugguide, caddisfly adults can be found during the winter, and may be called "Snow Sedges" by northwestern fishermen. It is thought they emerge in the fall and overwinter as adults before laying eggs in the spring, often surviving through subzero temperatures.

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