Rhagastis albomarginatus is a moth of the family Sphingidae.
Distribution It is known from the Himalaya, China, Taiwan, Myanmar, Sumatra, Java and Borneo. s weakly dentate with white with brown vein spots. The costal edge is at least partly creamy white. The hindwing underside has a small black discal spot.
Biology Larvae of subspecies R. a. dichroae have been recorded feeding on Vernicia montana and Dichroa febrifuga, while the larvae of subspecies R. a. albomarginatus feed on Dichroa, Hydrangea and Vitis species.
Subspecies Rhagastis albomarginatus albomarginatus (Himalaya, Taiwan, Myanmar) Rhagastis albomarginatus dichroae Mell, 1922 (China) Rhagastis albomarginatus everetti Rothschild & Jordan, 1903 (Indonesia, including Borneo and Sumatra)
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