Michigan Caddis

(body length approx. 3.5 cm)

Occaisionally one of these will show up floating down the lower McKenzie in summer, as this one did. Their nymphs are burrowers, and its a bit surprising to me that a fast rocky river like the McKenzie would provide the right sort of conditions for these to survive... But nevertheless every once in a while one of thes monsters show up, if only to make anglers (& possibly fish) confused for a few minutes. For what its worth, these are pretty much the largest mayflies there are, & are very common in the midwest.

dmason@zebu.uoregon.edu