I surfed through the Federation of Ontario Naturalists, and on to the Ojibway Nature Centre in Windsor, Ontario, twin city to Detroit. I knew Ojibway Park had an annual butterfly count, and yes, they counted two species of blue this summer. All that to find out I still don't know what I'm looking for. But if there are seven species in Ontario, I'm sure at least some of them will be found around the Midwest, and probably there is a greater species diversity in the Western States. Just like we have one species of hummingbird in Ontario compared to at least four in British Columbia.
Mountains have a way of doing that to nectavores.
I'm going to be watching my feet, as well as the treetops. I checked out those links you so kindly provided and bookmarked them for additional future perusing. It was very interesting to see how many blues were found this summer just in that area. There are some great photos on some of those links, too. It was just barely launched yesterday and is still under construction.