Saurita cretheis is a moth in the Arctiidae family. It was described by Druce in 1883. It is found in Ecuador. Adults are black-brown. The forewings have two slight hyaline streaks in the end of the cell and a narrow wedge-shaped streak below the cell and a series of patches between the bases of veins 2 to 7. The hindwings have a hyaline streak in and beyond the lower end of the cell and a short streak beyond the upper angle.