Sources: CAB International's Invasive Species Compendium 2019, Food and Agriculture Organization of the United Nations.
Note: Three species of Candidatus Liberibacter cause huanglongbing: Ca. L. asiaticus, Ca. L. africanus, and Ca. L. americanus. The Asian form is the most widespread.
The Economic Challenges of Dealing with Citrus Greening: The Case of Florida
Ariel Singerman and Michael E. Rodgers
California expands local quarantine zone to halt citrus disease spread by aphid-like bugs
Los Angeles Times and Associated Press
Citrus greening is killing the world's orange trees. Scientist are racing to help
The end of Florida orange juice? A lethal disease is devastating the state's citrus industry