Citrus Pest and Disease Prevention Program - Citrus Insider University of California IPM Guidelines for Citrus, Asian citrus psyllid California Department of Food and Agriculture: http://www.cdfa.ca.
WEB SITES and ARTICLES UC IPM Quick Tip Citrus Pest and Disease Prevention Program web site: CaliforniaCitrusThreat UCIPM: Pest note for ACP and HLB UC IPM: Quick tip for ACP and HLB VIDEOS UCR Elizabeth Grafton-Cardwell discusses the Asian citrus psyllid and HLB (2011) UC Riverside Scientists relea...
Asian citrus psyllid nymphs and adult (inset) on citrus shoot. Photo: M. Lewis, UC Riverside The Asian citrus psyllid (ACP) is widely established in both commercial and residential citrus throughout Southern California. Large-scale eradication of ACP in these environments is not feasible.
Map Use the Interactive Mapping Tool to locate your orchard and determine proximity to ACP and HLB detections as well as quarantine and treatment areas.
The Asian citrus psyllid adult is tiny - the size of an aphid. The wings are brown along the edge, with a clear gap along the back edge. The psyllid feeds with its rear end tilted up at a 45o angle, making the insect appear almost thorn-like on leaves and stems.
How do I find psyllids? Check your citrus trees monthly. Whenever you see tiny new leaves forming (leaf flush), look closely for signs of the psyllid. Remember the adults fly and so they may be hard to observe and the eggs are so tiny they are hard to see without a hand lens.
Tamarixia wasp parasitoid. Photo: M. Lewis The Asian citrus psyllid is attacked by many natural enemies, including lady beetles, lacewing larvae, syrphid larvae, minute pirate bugs, parasitic wasps, spiders, and birds.
