The elm zigzag sawfly, Aproceros leucopoda, recently has been detected in several midwestern states. Feeding exclusively on most native and introduced elm species, the elm zigzag sawfly is a defoliator that causes damage to the leaves of the trees.
The elm zigzag sawfly, Aproceros leucopoda, recently has been detected in several midwestern states. Feeding exclusively on most native and introduced elm species, the elm zigzag sawfly is a defoliator that causes damage to the leaves of the trees.