It’s a little hard to identify without seeing all of the pattern however it’s either Castiarina livida or Castiarina flavopicta. I think livida is most likely from the date (flavopicta is usually later), colour (usually a greenish tinge to the background colour in flavopicta rather than blue), the flowers the beetle is on are normally associated with livida, and the part of the pattern that is visible is more likely to be livida.