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Xylophanes tersa tersa
A moth, 2-3 cm's big.
Sensacional series genial
Amazing close ups :)
That absolutely looks right to me. This pretty much looks like what I saw: http://eol.org/pages/896388/overviewThanks!
Sphingidae/Hawk Moths, Xylophanes tersa. Unfortunately the most important dorsal shot of the whole moth is missing. Nevertheless I think it is Xylophanes tersa, also found in Uruguay (the link is from Florida).
Lat: -34.94, Long: -54.92
Spotted on Feb 4, 2010 Submitted on Apr 19, 2012