Technical Abstract: The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama (Hemiptera: Psyllidae), is an important pest of citrus because it transmits phloem-limited bacteria [Candidatus Liberibacter spp., notably Ca. L. asiaticus (Las)], associated with huanglongbing (HLB; citrus greening), currently considered the world’s most serious disease of citrus. ACP transmits Las in a persistent manner and, although the rate of Las transmission by ACP individuals is fairly low, HLB is spreading fast and its geographic range is expanding, threatening citrus industries in new areas. Intensive chemical control of ACP is currently the primary management strategy for HLB, but this strategy is costly, unsustainable, and generally ineffective for preventing incidence and spread of the disease. An integrated pest management approach is needed to provide more effective, economical, environmentally safe, and sustainable control of ACP and HLB. Control strategies in addition to, or in place of, chemical control could include host plant resistance, augmentative or classical biological control, cultural control, or molecular methods to silence genes of ACP to induce mortality or to block its ability to transmit HLB-causing bacteria. Research into these strategies is ongoing, but there remains a great need for a better understanding about the basic biology of ACP and vector-pathogen-host plant interactions at the molecular, cellular and community levels.