Asian Citrus Psyllid

Asian Citrus Psyllid

Asian Citrus Psyllid Adult. Photo by M.Rogers

Asian_Citrus_Psyllid-Symptoms Photo by S.E.Halbert

The Asian citrus psyllid (ACP), Diaphorina citri Kuwayama, a tiny, mottled-brown insect about the size of an aphid, poses a serious threat to California’s citrus trees, including those grown in home gardens and on farms. The psyllid feeds on all varieties of citrus (e.g. oranges, grapefruit, lemons, and mandarins) and a few very closely related ornamental plants in the family Rutaceae (e.g. calamondin, box orange, Indian curry leaf, and orange jessamine or orange jasmine). For more information, please visit UC Integrated Pest Management's webpage at UC IPM Online - Asian Citrus Psyllid.