willow leaf beetle

noun

Definition of willow leaf beetle

: any of various often destructive cerambycoid beetles that feed especially on the leaves of willows: such as

a(1) : a beetle (Lina scripta) that often defoliates and kills willows and poplars

(2) : a beetle (Pyrrhalta decora) of similar habits

b : a beetle (Phyllodecta vitellinae)