Hrm. I wonder if there's any connection between that piece and Caress of the Sphinx, from a decade or so earlier?

It definitely feels like a modern variation on the Decadent/Symbolist Sphinx, although I don't know if a variation on Khnopff or Moreau specifically. I was expecting to discover it had been commissioned as a magazine illustration for a weird tale and apparently it was just drawn on the artist's own time. [edit] It wouldn't quite suit a reprint of Esthner M. Friesner's "Simpson's Lesser Sphynx" (1984), but I would be tempted.