Definitely not M. maculariformis, and from the size of the Verbena flowers, a smaller species. My first guess would be M. serricauda, which has some distinctive features, but they are probably too small to be seen in photos unless the original of image 3 has enough resolution to permit enlargement of the front foot.
Things are getting more complicated. I think the bee in the new image 5 is a different species. The orange on the end of the abdomen extends onto segment 4, but the earlier pictures have a thick white band on that segment. And the projections at the end of the abdomen are a different shape. There really are so many possibilities that we have to leave it as Megachile sp. I do think pictures 1 to 4 are a leaf-cutter, but even then I can't prove it.