What's eating my roses?

Hi Connielarayne these large slices quite distinctive and my guess would be a leaf cutter bee is doing the damage.Bees are welcome visitors , so a method of controlling them is not available.Sorry not much help but there may be roses more resistant or a means of companion planting that will deter them.

Ah, so that's what I've got eating my amalanchier

I had leaf-cutter bees - they built their little tubes of leaf in some plant pots where I had cuttings rooting. Gave me a bit of a fright when I tipped the contents of the pot out into my hand! Wasn't stung luckily! They are solitary bees and deposit individual cocoons around the place it seems.