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Picture library: 40708

KERMES QUERCUS . Sphaeropsis as a result of attack by scale insect . Scale insect causes heavy infestations on bark of oak which weakens bark tissue .The fungus , Sphaeropsis sp. which is commonly isolated from affected branches has the ability to kill bark tissue following inoculation . Location: Wyre Valley , Hereford , England .

Reference: 40708

KERMES QUERCUS . Sphaeropsis as a result of attack by scale insect . Scale insect causes heavy infestations on bark of oak which weakens bark tissue .The fungus , Sphaeropsis sp. which is commonly isolated from affected branches has the ability to kill bark tissue following inoculation . Location: Wyre Valley , Hereford , England .


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Credit line: Forestry Commission

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