Abstract
INSECTS of the family Aphidae and particularly the apple aphid, Aphis pomi DeGeer, have long been suspect as significant vectors of the phytobacterial pathogen Erwinia amylovora (Burrill) Winslow et al., 1920. That these insects could artificially transmit the fireblight bacterium and establish progressive infections in apple and pear tissue was demonstrated by Stewart1, Stewart and Leonard2, and Merrill3.
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