Cautethia exuma is a species of moth in the family Sphingidae, which is known from the Bahamas. It was described by Timothy L. McCabe in 1984.McCabe, T. L. (1984). "A new Cautethia from the Bahamas (Lepitoptera: Sphingidae)". Proceedings of the Entomological Society of Washington. 86: 614–618.
Moths in this species have a wingspan of 27–32 millimetres. They are immediately distinguishable from all other Cautethia species by the pale yellow-brown basal area of the hindwing upperside.
The larvae probably feed on Rubiaceae species.
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