Difficult Syrphid from the Syrphini

This little fly - 2 cm wingtip to wingtip - keys out to Epistrophe or Meliscaeva, but to neither with any certainty.  Apart from the clear marking on tergites 2, 3 and 4 there are no others visible.  The underside shows more bright yellow than I recall on other Syrphids.  Other clues have I none.  I want it to be M. cinctella, but given the diversity of markings in the subfamily I can't be sure of anything.  I'd welcome some guidance.

   

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