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About 3 cm long moth.
My balcony near a forest.
Genus Leucania, either Leucania scirpicola or Leucania incognita or even another similar species found only in South America.
http://bugguide.net/node/view/709468
http://bugguide.net/node/view/625755
Hi Carolina - wow, awesome photos you have! Nice to meet you by way of Instagram!