General Insect Category


All sucking insects that feed on xylem sap may be vectors ofXylella fastidiosa. Vectors acquire the bacterium by feeding oninfected plants. xylellaThe bacteria appear to adhere to the foregut (betweenthe needle-like mouthparts and the stomach) and are then transmitted byinfective vectors to other plants. Vectors remain infectiveindefinitely after picking up the bacteria with the exception that theyno longer are able to transmit after they shed their external skeletonby molting. After molting, insects must feed again on an infected plant before they can transmit the bacterium.

All known vectors of X. fastidiosa belong to the insectsuborder Homoptera. The main vector groups are leafhoppers (familyCicadellidae) in the subfamily Cicadellinae. Many of these are commonlycalled sharpshooters. Spittlebugs or froghoppers (family Cercopidae) arealso vectors. Cicadas (family Cicadidae) are also xylem feeders but sofar there are no published reports of their being tested as vectors.

sonesimiaSonesimia grossa

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