Source : Webster's Revised Unabridged Dictionary (1913)

Imago \I*ma"go\, n.; pl. {Imagoes}. [L. See {Image}.]
   1. An image.

   2. (Zo["o]l.) The final adult, and usually winged, state of
      an insect. See Illust. of {Ant-lion}, and {Army worm}.

Source : WordNet®

imago
     n 1: (psychoanalysis) an idealized image of someone (usually a
          parent) formed in childhood
     2: an adult insect produced after metamorphosis
     [also: {imagoes} (pl), {imagines} (pl)]