Dear Jim, it certainly is Cassida murraea. It feeds on Inula and Pulicaria. On the photograph I can see the leafs of Pulicaria dysenterica. Are you willing to share the locality and date, so I can add this observation to my database. Best wishes, Ron
Thank you all for your help identifying this beetle.
Dear Ron,
The lat./lon. of the location is: 51.331731°, 4.253457°. The date of this observation is: 20/05/2015 9:55. It was at the foot of a dyke, facing the southwest. Is it a publicly available database?