Luctus

a personification of grief or mourning, is described as a son of Aether and Terra. (Hygin. Praef.) This being, who wasted (edax) the energies of man, is placed by the poets together with other horrible creatures, at the entrance of the lower world. (Verg. A. 6.274; Sil. Ital. 13.581.) [L.S]