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Saperda tridentata
Cerambycidae, Lamiinae, Saperdini, Saperda tridentata.
http://bugguide.net/node/view/926337/bgi...
http://bugguide.net/node/view/631082/bgi...
http://bugguide.net/node/view/9757/bgima...
http://www.entomology.umn.edu/cues/Web/1...