The Asian citrus psyllid (ACP) in California has a new enemy. Researchers from the University of California, Riverside have imported an invasive pest from Pakistan that preys solely on the ACP. A parasitic wasp called Tamarixia radiate has been released in southern California to help slow the spread of the ACP. A second kind of parasitic wasp may soon be released, pending U.S. Department of Agricutlure approval.
1. ACP nymphs on curry plant.
Citrus growers need to know what to look for when inspecting their groves. The waxy honeydew hanging from the branches is the byproduct of ACP phloem feeding.
2. Adult Asian citrus psyllids feeing on plants in quarantine.
Upon closer inspection several Asian citrus psyllids can be seen on the vertical stem of this plant in quarantine. Characteristics of the ACP include their angled approach to feeding on stems and leaves.
3. Mark Hoddle
Mark Hoddle, an entomologist with UC Riverside, studies Asian citrus psyllids and Tamarixia radiate in quarantine at his university lab.
4. Tamarixia radiate
The Tamarixia radiate is a bio control measure researchers are using in the fight against the Asian citrus psyllid.
5. Asian citrus psyllid
The Asian citrus psyllid feeding on citrus leaves in the San Joaquin Valley of California.