Thanks for the advice, Dwayne. I've cropped the photo a bit more and it is really tight now. Pity I can't show the photo in real size as the details on the bee, including the hooks on its legs, are just incredible. Fantastic camera and lens.
I love the threatening nature of this photo. The flowers appear like open-mouthed creatures waiting to snap up any unsuspecting insect. The top right flower looks almost like a cat's head which the bee's back leg is caressing.