Liberibacter asiaticus - Originating in Asia and a causal agent of huanglongbing, also known as citrus greening disease and vectored by the Asian citrus psyllid Diaphorina citri.
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Liberibacter americanus - A novel species from Brazil described in 2005 and associated with huanglongbing, also known as citrus greening disease and vectored by the Asian citrus psyllid Diaphorina citri.
Diaphorina citri, the Asian citrus psyllid, a sap-sucking hemipteran bug species