shield bug nymphs

shield bug nymphs

Observation - shield bug nymphs - UK and Ireland. Description: Mound of bugs clumped closely together on bramble leaf.Quite a big difference in size .Stayed together until I approached very close then one moved and they all scattered. I saw a second similar group also on an old bramble leaf.Can anyone tell me what th

Mound of bugs clumped closely together on bramble leaf.Quite a big difference in size .Stayed together until I approached very close then one moved and they all scattered. I saw a second similar group also on an old bramble leaf.Can anyone tell me what they are doing.