Identification of a bug on lavatera

Question

[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.

Answer 1

An option, looking at the different members of the family, seem to suggest a southern green stink bug. Should it be handpicked remaining an open question.