This species is confirmed as Leucanella newmani by Bill Oehlke, Carlos Mielke and
Eurides Furtado. Luigi Racheli indicates it is hard to do some ids from photos, but it is likely Leucanella newmani.
Bill Oehlke
I can probably help with identifications of worldwide Saturniidae as well as Sphingidae from the Americas
oehlkew@islandtelecom.com