Sugarcane aphid in sorghum update for Aug. 4, 2016

We have confirmed white sugarcane aphid (Melanaphis sacchari) in sorghum in three more Virginia counties this week—Suffolk, Prince George, and Dinwiddie.  Scott Reiter, Prince George Co. ANR Agent, reported that his aphids came from fields that were below threshold levels and were found along the field edge–very similar to the aphids from Suffolk.  Mr. Reiter also had white sugarcane aphids submitted from a Sussex Co. sorghum field.  The Dinwiddie aphids were found at Ag Expo.  White sugarcane aphid has been found in all the blue and green-colored counties in the map below.