After a week of trying to get one of these native Bees in flight I got one I'm happy with (but can always do better). They are around 3-4mm in length and have been hovering around our radish flowers. I found that pre-focusing on the flower and waiting for them to hover is maybe the best way to get them, but with this one I tried to follow it.
Canon 6D, 100mm macro, 1/2000th sec, f8, iso 1250. No flash used