Elm zigzag sawfly spreading, causing leaf pattern : vimarsan

Have you noticed a certain zigzag pattern on some leaves in your yard?

Related Keywords

North Carolina State University , North Carolina , United States , Canada , New York , Quebec , Pennsylvania , Vermont , Maryland , Ohio , Virginia , Massachusetts , Delaware , America , Tom Macy , Brian Heath , Carolina State University , Division Of Forestry , Carolina Forest Service , Us Department Of Agriculture Forest Service , Ohio Division Of Natural Resources , Forest Health Program , Forest Service Northern Research Station , Franklin County , Health Program Manager Tom Macy , Ohio Division , Natural Resources , North America , North Carolina Forest Service , Kelly Oten , Nmw , ,