It would not have been surprising if spots or moles lurked there. Bear with me. Via Old French, from the Latin arcus for bow - as is arc - archer entered the language in the 13th century and 300 years later was noted as a sign of the Zodiac, Sagittarius, into which the sun moved just as Lord Archer's latest troubles emerged. Even more curious is that the archer is a fish in Java: able to waylay insects with a shot of water, it is "of a yellowish colour, marked in the back with five brown spots".
A CURIOUSLY underplayed aspect of Jeffrey Archer's libel case is that he did not settle matters for once and all by volunteering to remove his shirt and display his back - spotty or otherwise - to the public gaze. It has certainly not been photographed since.