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Picture library: 2004762

Ceratocystis ulmi.  Heavy frass from beetle breeding and ladybirds seeking sap.

Reference: 2004762

Ceratocystis ulmi. Heavy frass from beetle breeding and ladybirds seeking sap.
Date Taken: 15th July 1976

Photographer: J. Dickinson
Copyright: Crown Copyright
Credit line: Forestry Commission / J. Dickinson

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