Came across this while looking for butterflies.
About the size of a hornet, looks like one and even makes an angry buzzing sound like one when disturbed.
Closest in my book on insects (the book makes me shudder every time I open it) is Rhingia Campestris. The colours are different, but they may be related.
Looks like some sort of robot insect to me.
Thank-you for looking at, commenting and voting on the previous effort.