I'm not sure about the I-90 bit, but I don't believe the beetles are 
wintering in Clinton county...northeast corner of New York state, and in 
Franklin county, the northwest corner of Vermont. I can leave my full 
supers in the hot room with no problems.

In fact, I know when a new beekeeper, close by to one of my apiaries, 
has brought in packaged bees from the south. I never see beetles, and 
when I do I look for the new beekeeper. Took me awhile last summer to 
find the apiary located right between my Martin yard and my Brigham 
yard. 15 colonies started from packages and moved in from Connecticut. 
They all died in the winter and the yard wasn't re-stocked. Broke my heart.

Mike
> I have seen SHB in Saratoga, Schenectady and Rensselaer county for at
> least a decade.  The sites are all within Pete's hypothesized distance
> from I-90, but I don't buy it.  I think they're established and
> surviving winters.
>    

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