 Some Spilomelinae diverge from this common resting pattern, like "Maruca" with widely spread wings, and "Atomopteryx" and "Lineodes" with a resting position much resembling that of Pterophoridae.All Spilomelinae moths have well developed compound eyes, antennae and mouthparts, although in the genera "Niphopyralis" and "Siga" the proboscis is lost.Synapomorphic characters of the subfamily comprise minute or obsolete maxillary palpi, ventrally projecting fornix tympani, and the female genitalia's ductus bursae with a weak sclerotization or a granulose texture.