Asian citrus psyllid (ACP), Diaphorina citri, is an insect pest which transmits a bacterium, Candidatus liberibacter asiaticus (Clas) through newly emergent foliage of citrus trees. This causes a disease known as Huanglongbing (HLB), which has become the most debilitating and intractable disease in citrus crops. This book, written by a team of experts on the Asian citrus psyllid, gathers together everything currently known about the biology and ecology of this important pest species, examines the transmission and acquisition processes of the pathogen, and looks at current management practices and their effectiveness. The potential for new, innovative management techniques are also described along with the economic implications of managing this rapidly establishing disease.