Theretra polistratus is a moth of the family Sphingidae.

[2] It is an unmistakable species, characterized by three continuous dark green dorsal lines extending from the anterior edge of the mesothorax to the tip of the abdomen.

The upperside of the body has a narrow dorsal line and a pair of somewhat broader subdorsal lines running from the mesothorax to the tip of abdomen.

The forewing upperside ground colour is silver-grey with a dark green oblique antemedian line and six dark green postmedian lines.

This Theretra-related article is a stub.