A Hummingbird Hawk Moth, spotted at Phu Reua National Park in Loei. It has an elongated, retractable roll-up tongue suck up nectar and is able to hover in midair and move swiftly from side to side whilst hovering,  (fig.).

Its wide abdomen is mainly tawny to buff, with smudges of black and white, and orange spots on the lower sides, and with a black, fluffy, fan-shaped tail.

Its body also has faint transverse stripes in black and white, as well as a wide maroon band with black margins towards the centre of the abdomen.