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Elm Leaf Beetle

A major pest of elm trees, and primarily a nuisance pest because they enter structures in the autumn to overwinter.

  • Common Name: Elm Leaf Beetle
  • Scentific Name: Pyrrhalta luteola (Muller)
  • Class/Order/Family: Insecta/Coleoptera/Chrysomelidae
  • Metamorphosis: Complete
  • Size


    Adults about 3/16 to 1/4" long.

  • Color


    Light yellow with a black stripe, then dulls to olive green.

  • Biology


    Lays clusters of bright yellow eggs on the underside of elm leaves.

  • Habit


    Fecal material can spot car finishes on hot days.

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