A salt succubus
According to religious mythology, a succubus was a demon in the form of a female that seduced men into sexual activity.
Ensign Beckett Mariner believed Brad Boimler's girlfriend Barbara Brinson was actually a salt succubus in disguise as one of many things she falsely speculated regarding Brinson's origin, in addition to a reptoid, Vendorian, android, or even a Changeling. (LD: "Cupid's Errant Arrow")