Jul 1, 2011 | View All Issues
VMB populations remain mostly synchronous at our sampling sites in St. Helena. The majority of the population is in the 1st or 2nd instar stage. We did not find any movement onto the leaves, although we may see some following the predicted warm weather. We are finding some evidence of parasitism at both sites.
VMB populations at our Carneros site are not as synchronous. We are finding mostly 2nd and 3rd instars, but a smattering of females, ovisacs, and 1st instars are also present. The Carneros population is also under the bark. We also found healthy populations of Argentine ant on the vines in Carneros with VMB.
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