The Neighbor Moth Caterpillar (Haploa contigua)
Haploa contigua, the neighbor moth, is a moth of the family Erebidae. It was described by Francis Walker in 1855. It is found in eastern North America, from Quebec to the mountains of Georgia and west to South Dakota, Arkansas and Mississippi. The wingspan is 36–49 mm.
White FW has a black border broken at apex and anal angle. A perpendicular black band extends from beyond midpoint of costa to anal angle. Beyond this, pattern is broken into two large white patches.
Hosts: Trembling aspen, probably other plants.