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The epimuta group consist of three species in which the male have a circular disc on the FW that reflect the colour differently.
They are A. epimuta ,atosia & lurida.
The underside pattern is also distinctive.
1. FW spot 4 is dislocated & shifted out from spot 5 & 3.
2. HW with the postdiscal band completely dislocated at vein 2.
3. HW spot 5, 6, 7 7 in chelon, arranged in a staggered manner ,with eah spot set ifurther in than the one below it.
The degree of overlap is quite varable & spot 7 may appear to be almost entirely on top of spot 6.
(This sometimes cause confusion with the pseudomuta group.