ACP Information and Map of Regional Quarantine of Citrus in California can be found on the 'California Department of Food and Agriculture' site.
Please use CDFA site for more complete information regarding ACP.
https://www.cdfa.ca.gov/plant/acp/regulation.html
Statement is from their site:
The Asian citrus psyllid (ACP) is a pest that acts as a carrier or vector spreading "huanglongbing" (HLB), a devastating disease of citrus trees. This bacterial disease is transmitted to healthy trees by the psyllid after it feeds on infected plant tissue.
