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United States Department of Agriculture

Agricultural Research Service

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An adult Asian citrus psyllid.

Citrus Psyllid

Citrus trees produce new leaves in Florida about three or four times a year and are most likely to develop "citrus greening"—caused by a bacterium spread by psyllids feeding on infected leaves—if they are exposed to the disease during that time period.

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Last Modified: 5/5/2017
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