Marumba dyras, the dull swirled hawkmoth, is a species of hawk moth described by Francis Walker in 1856.

The ventral surface of the forewings with only lines on the outer half present.

The caterpillar is blue green with short white granular spines.

They can be found in Byttneria aspera, Firmiana simplex, Microcos paniculata, Pterospermum heterophyllum, Sterculia lanceolata, Hibiscus mutabilis, Microcos paniculata.

In Laos and Thailand, caterpillars recorded from Bombax anceps, Hibiscus rosa-sinensis and Microcos paniculata plants.