leaf beetle
US /liːf ˈbiːtl/
UK /liːf ˈbiːtl/
1.
any beetle of the family Chrysomelidae, typically having a rounded or oval body and often brightly colored, many species of which feed on and are pests of plants
:
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The garden was infested with tiny leaf beetles, damaging the hosta plants.
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Some species of leaf beetle are considered agricultural pests due to their feeding habits.