SCAPHYTOPIUS ACUTUS (SAY), A NEWLY DISCOVERED VECTOR OF CELERY-INFECTING ASTER-YELLOWS VIRUS

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Abstract
Scaphytopius acutus (Say) transmitted a celery-infecting strain of aster-yellows virus from infected periwinkle (Vinca rosea L.) and aster (Callistephus chinensis Nees) to periwinkle, aster, and ladino clover (Trifolium repens L.). It acquired the virus during feeds as short as 4 hours, and transmitted it during a 2-hour feeding period. The minimum incubation time for the virus in the insect was between 21 and 26 days. After an acquisition feed of 7 days and an incubation period of at least 30 days, 11 of 21 insects transmitted the virus to separate periwinkle test plants.

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