Subtropical Fruit Crops Research & Education
University of California
Subtropical Fruit Crops Research & Education

Exotic Pests


Diaprepes abbreviatus
(Coleoptera: Curculionidae)

Origin: The root weevil (Diaprepes abbreviatus) is a pest species originating in the Caribbean and first reported in Florida in 1964, in Los Angeles and Orange counties in 2005 and in San Diego County in 2006. The weevil is currently found in southern California coastal areas from La Jolla through Long Beach.

Click here to download a copy of the presentation on Diaprepes.

Asian citrus psyllid
(Diaphorina citri Kuwayama)

The Asian citrus psyllid, Diaphorina citri, is a tiny, mottled brown insect about the size of an aphid. This insect poses a serious threat to California's citrus trees because it vectors the pathogen that causes huanglongbing disease (HLB). This disease is the most serious threat to citrus trees worldwide—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 several closely related ornamental plants in the family Rutaceae (e.g., calamondin, box orange, Indian curry leaf, and orange jessamine/orange jasmine).

Click here to learn more about this psyllid and disease control from Citrus Insider.

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