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This all seems to hang on whether you consider them to be valid separate genera (as RD did in 1860) or whether you prefer to lump them together under Panzeria (as RD did in 1863).

The Americans seem to follow Monty Wood's decision to acknowledge RD's synonomising under Panzeria ... but over here Mesnil (a man who liked to have plenty of genera) preferred to split them up into Eurithia, Ernestia, Appendicia & Fausta. To be honest I am not convinced of its necessity and it creates confusion when studying nearctic and palearctic material :S