Are the chews somewhat circular around the edges Alice? If so, it's a leafcutter bee. They use the leafs to line their nest.....you hardly ever see the bee herself. They don't do any harm and it shouldn't last much longer. Mine were chomping last month.

Thanks, jant. I checked leafcutter bees out online & then looked more closely at the damage on my rose -- think that might be it, especially since so far the new leaves aren't getting hit.

Thanks again,

Alice

I agree. The leafcutter bees are the most common cause of this, and they don't really damage anything.

Study the shape of the "munch" -- that's the ticket.