These moths will lay eggs of the second generation. Egg hatch is still occurring in and north of Fayetteville until 23 May Prediction of beginning of second generation egg hatch is 1 June in Forrest City , 4-5 June in Nashville and Clarksville and 6 June in Fayetteville. In Table below, the red DD indicates need to keep fruit protected with an insecticide. It lasts for 120 days. San Jose scale attacks most fruit trees.
Heavy infestations can kill limbs and eventually the whole tree.
Crawler emergence period is predicted to have occurred from 3 to 16 May in Forrest City and Hope , from 9 to 21 May in Clarksville and Nashville , and from 16 to 24 May in Fayetteville . Typically, the first generation eggs are laid on vines in the perimeter 1 or 2 rows . By mid May, move pheromone traps from wooded edge adjacent to vineyard to the middle of the vineyard . In May, make weekly inspections of clusters for webbing and external feeding on grapes. Check 10 fruit clusters for worm damage at each of five locations along the perimeter and also in the center of the vineyard.