Jean Auguste Dominique Ingres (1780 〜 1867).
Sphinx is a half-woman half-lion creature who strangles passersby that cannot answer her riddle. Oedipus answered her riddle, and Sphix jumped off a high-rock and killed herself. Oedipus is also famously known for having (unknowingly) killed his father, for which we have the term Oedipus Complex.
She sank to the ground beside him, put her left arm round his knees, raised her right hand to touch his chin, and so made her petition to the Royal Son of Cronos — Iliad
Note: Jupiter is the Roman God analogous to Zeus in Greek mythology. Thetis is a silver-footed sea nymph, mother of the Geek hero Archilles in Trojan War.