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 africanus - Originating in Africa and a causal agent of huanglongbing, also known as citrus greening disease and vectored by the African citrus psyllid Trioza erytreae.
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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.