[EDIT-20170626: added some history] I just found a couple of bugs on my lavatera, which seems to do fine so far. I has tried to find the bug species with the morphological description, without success.
- Who could it be?
- Is it detrimental?
[EDIT-20170626] This family album, after a few days wait, seems to suggest a southern green stink bug, at least in its intermediate lymph avatars.