Japanese Beetle is a leaf beetle that is a noted pest of about 300 species of plants. They have iridescent copper-colored bodies, green heads and white spots under their wing covers on each side of the body. They cause damage to plants by feeding on the foliage and leaving behind the veins.
Viburnum Leaf Beetle is a leaf beetle that causes similar damage to the Japanese Beetle. They chew holes in leaves creating a lace-like pattern. Severe infestations can cause complete defoliation of a shrub, which weakens the plant over time and can be fatal. The larvae are tiny and range in color from yellowish-green to light brown with black spots and dashes on their bodies, while adults are a little bigger and yellowish-brown in color.
Willow Leaf Beetle is a leaf beetle that causes similar damage to the Japanese Beetle and Viburnum Leaf Beetle. Adults chew holes in the leaves, while larvae completely skeletonize the leaves. With a heavy infestation, all of the leaves may turn brown, causing the tree to appear dead or scorched. The adult beetles are stout, oval, and metallic bluish-green, while the larvae are bluish-black in color and are slug-like.