Viburnum leaf beetle (Pyrrhalta viburni) is an insect pest of Viburnums. It is a native of Europe and Asia and was first detected in New York in 1996.
Continual defoliation by both larvae and adult can cause death of host within a couple of years.
E. Richard Hoebeke, Cornell University, Bugwood.org
Viburnum leaf beetle
Pyrrhalta viburni
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