Hylephila phyleus invasion?

[JerryMcW at aol.com]

I have been observing fresh Hylephila phyleus almost daily since August 21 
along the south shore of Lake Erie in Pennsylvania.  I have seen as many as 3 
at one time on my butterfly bush since August 21.  I was wondering if anyone 
else has recorded them north of Pennsylvania especially along the eastern 
Great Lakes in the past couple of weeks.  I have found this species only once 
before in Erie County, Pennsylvania and that was on September 20, 1996.

Jerry McWilliams
Erie, Erie County, Pa