---

Hoi Bruce,
Happy newyear!!:D
I can tell you that this is a male.
In a lot of species of Syrphidae this is very easy to see, because in males the eyes touch over a certain distance on the upper side of the head, whereas in females there is a space in between the eyes!
But caution should be taken, this is NOT the case in all genera of syrphids. In that case it is better to look at the tip of the abdomen. Males always have a knob-like structure (as in your Sarcophaga sp.!), and in females this end of the abdomen is more flat without much to see! So, this is a male because of the touching eyes and the knob that you can see very well on your second picture!
And yes, Syrphids are one of the most beautiful families of flies! :D:D

Greetings,