Asian citrus psyllid
nounDefinition of Asian citrus psyllid
: a sap-sucking, grayish-brown mottled plant louse (Diaphorina citri of the family Psyllidae) of southern Asia that has been widely introduced into the U.S. and other citrus-growing regions and is a serious pest of citrus trees especially as a vector of the bacteria causing citrus greening The Asian citrus psyllid, which is the size of a fruit fly, feeds on the leaves of lemon and orange trees.— P. J. Huffstutter
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