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caterpillar with fungus

caterpillar with fungus
Cross Plains, Dane County, Wisconsin, USA
August 31, 2010
I came across this caterpillar on a plant stem. Looks rather fungus-ridden.



Inch worm?
Hard to tell but it looks like it could be a Geometrid. Poor thing!

3 pairs of prolegs?
There seem to be three pairs of prolegs, which would be one too many... maybe some kind of noctuid?

This may be a fungus victim, but a virus or bacterium could be responsible--I'm not entirely sure.

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