Not only is he posing well, but how nice of him to have chosen a color coordinated background. This will make a good addition to my butterfly shot file.
I really like it when the butterfly does not clash with the flower color! And I see he has a little bee friend as well. This is nicely focused on the main attraction and clearly you worked hard to get this shot. If you have the pixel depth, this one might benefit from a bit more cropping... but it is a super picture overall!