Zale and Metria
These species are variable and closely related,
a correct identification needs generally an examination of genitalic structures.
Postmedial line on forewings with regular waves
Uncontrasted grey background 
Zale fictilis.
Postmedial line on forewings with irregular waves.
Contrasted yellow background. 
Arched line on forewings generally double,
heavy contrast at forewing apex 
Zale erilda.
Arched line on forewings generally single,
weaker contrast at forewing apex 
Zale strigimacula.
Series of marginal spots on hindwings
Zale peruncta.
No marginal spots on hindwings (Metria).
Transversal dark and light stripes at both wings
Metria permixta.
Wings uniformly dark
Metria decessa.
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Forewings with an arched line at tornus.
