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And Thyridantrax perpicillaris: pale pannels on wing much reduced; two pale incomplete bands on abdomen, white tip to the abdomen and... yellowish palpi!!

Beware: there is a very similar species, T. fenestratus, nearly impossible to separate from it in pictures. This one has black squamma alaris (imposible to see in a picture in the wild) and black palpi.

The palpi are the clue!! :) Hard work to shoot when they are feeding and get them in frontal view, but it is worth the effort! ;)

By the way, your other Thyridanthrax is related to T. perspicillaris but it isn't that species, for sure. Hope to manage to ID it, but won't be easy...