White drupelet disorder can be a symptom of insect feeding--stinkbugs are a specific cultprit-- but it is also caused by a combination of UV damage and heat damage--temps over 86, but more likley temps over 90 will do it. THere are some references in horticultural literature, if anyone wants them, please email me offlist and I'll send you some citations.
Michele in SW Ohio
[NAFEX] white drupelet disorder,
Michele Stanton, 06/30/2008