It’s a black hairy flower wasp. You’ll see them zooming around at knee height looking for grubs on warm days. They paralyse them and drag them back to their burrows. They lay an egg on top and off again for more. Really great things to have around the garden as they eat all the grubs that would otherwise be eating your plant’s roots. Totally non-aggressive, unless you’re a grub…

Here is a pic from Jerry Coleby-Williams website

https://jerrycolebywilliams.files.wordpress.com/2012/07/scolia-soror-1-copy.jpg