"I'd be tempted to very slightly raise the saturation to make the image really "pop" though"
Mike, why do general photographers always feel a need to over-saturate things? The principle of natural history photography is that the colours should look natural and as they were on the subject. "Gilding the lily" is not considered ethical in natural history photography which attempts to portray life as it actually is.
I think the colours on the hoverfly are great so why mess up a perfectly good picture by over post processing it. If you get it right in camera it should virtually go straight through post processing without needing much other than resizing and sharpening. If you need to do much more than that you got it wrong at the taking stage. The need for extensive post processing is a sign of poor photography.
You did not do it with slide photography so why start with digital? But we seem now to be breeding a generation of post processing "twiddlers" who cannot resist using all the Photoshop "bells and whistles" on every shot just because they have bought expensive software. Hopefully some day the results will just come from a digital camera as they did with slides and only very basic post processing software will be needed, if any at all.
Sorry Mike, off my hobby horse now!
The only thing spoiling the picture in the closest wing is out of focus but depth of field is such at these magnifications it is impossible to get both wings in unless a "plan view" of the insect is taken.
DaveW