If you’re right about California, Napa/Sonoma Valley better be ready.
The folks in CA this concerns the most are the almond growers, but then they have been dealing with the increases in pollination contract costs for a some years now. We pay for it in higher costs in the market.
There are so many overlaps concerning this latest discovery of the parasitic fly which had previously not been seen to attack honey bees. For a while now, it has been noted or speculated upon that virus transfers between bumbles and EHB had been occurring, and that bumbles had been suffering from --- what I don't know exactly. The virus transfer was thought to occur while both were visiting flowers. That may be the case, but this parasitic fly is another strong candidate as being a vector for virus not looked upon much previously. Both transfer methods may have been occurring. It's going to take a while to sort this out. All I can do is watch, and try to connect the dots without going too far off the with speculation, like blaming it all on cell phone towers. The varroa mites had also been seen as a vector among honeybees themselves, and also as weakening agent, in that the mite feeds on the bees blood, weakening the bees enough to succumb to virus,,and nosema infection.