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Bluegreen aphid (BGA)

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Bluegreen aphid, Acyrthosiphon kondoi, showing heavy aphid infestation.. Bluegreen aphid, Acyrthosiphon kondoi, showing misshapen and distorted lucerne leaves.. In eastern Australia, aphids appear to have declined in pest status since the introduction to Australia of bluegreen aphid (BGA) and spotted alfalfa aphid (SAA) in the 1970s when they caused widespread damage...
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