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My understanding is that R-D created the names Ernestia (rudis) and Panzeria in that sequence in 1860 so page preference would normally put Ernestia as the valid name. But in 1863 he revised his opinions and placed E.rudis into Panzeria, which brought into play the principle of "first reviser", which I understand has priority over the 1860 names.

In the US Monty Wood worked this out and they have been using the name Panzeria ever since but over here Mesnil was dead against using Panzeria for some reason known best to him and we have followed Mesnil's naming ever since. Cerretti appears to have followed Monty Wood's lead and so has Ziegler so Peter decided to adopt Panzeria too.

As to the other genera (Eurithia, Appendicia & Fausta), the jury is still very out as to whether they should be lumped with Panzeria and Peter Tschorsnig says that he will wait until there is a complete and thorough revision before moving those.