Keedysville, Md. -- How many stink bugs does it take to make a wine stinky? That was a question which, until recently, no one on the East Coast (or elsewhere) knew the answer to -- or even thought to ask. As long as stink bugs in vineyards were the native varieties, they were not a problem: Native species don’t feed on fruit such as grapes.Concerns about stink bug taint have grown, however, with the increased presence of the brown marmorated stink bug (BMSB) from China discovered in vineyards and orchards from Pennsylvania through West Virginia and Maryland and into northern Virginia.