Harlequin bug (Graphosoma semipunctatum)

This may not be the correct name for this bug but I have always called them harlequins as they remind me of the coloured clothes that they wore. There are a couple of variations with the other having stripes rather than dots on the pronotum. They look very majestic to me. You tend to find them in the heads of what apear to be like parsley plants once the flowers have dried up. 
They flower heads curl inwards and the bugs hide inside in small groups. It is great when you look inside and see them. You can just make out what the flower heads look like in the picture. Enjoy.