The African citrus psyllid, Trioza erytreae, is a sap-sucking insect, a hemipteran bug in the family, Triozidae. It is an important pest of citrus being one of only two known vectors of the serious citrus disease, Huanglongbing or greening disease. It is widely distributed in Africa. The other vector is the Asian citrus psyllid, Diaphorina citri.