Barberry Geometer Moth

I recently found that the Barberry is a source of orange dye. We might have the plant here. We have a local paper making group that uses a very strong orange coloring. All their materials are natural. I'll ask if they use that plant. (Taller de Leñadores, San Cristobal de Las Casas).

Thank you Fyn for the identification. It matches C. meadii very very well, although I can't find a record for Mexico. But too, the moths here are not well studied.