CISR: Citricola Scale

CISR: Citricola Scale

Wednesday, October 21st, 2009

The Situation: In California, citricola scale is a serious pest . This pest is a particular nuisance in the San Joaquin Valley when broad-spectrum pesticide use is reduced as these insecticides typically keep this pest under good control. It was also a serious pest in the inland areas of southern California until 1935, when Metaphycus […]

CISR: California Red Scale

Wednesday, October 21st, 2009

The Situation: California red scale was introduced into California between 1868 and 1875, apparently on citrus seedlings from Australia. The scale insect is native to Southeast Asia but has been transported on citrus seedlings to all arid and semiarid regions of the world where citrus is grown. It occurs in all of California’s citrus growing […]

CISR: Black Scale

Wednesday, October 21st, 2009

The Situation: In California, black scale is a periodic pest of citrus in southern California and a consistent pest of olives in the San Joaquin Valley. It was introduced into the United States and California sometime before 1880. It now occurs in many regions of the world and infests a wide range of plants. It […]

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Center for Invasive Species Research

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E-mail: mark.hoddle@ucr.edu
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