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Heliconius besckei or H. ethilla
The respective butterflies are here: Ethilia Longwing: http://www.projectnoah.org/spottings/863... and Beskei Longwing: http://www.projectnoah.org/spottings/844...
EarlyStages, both are common around here: http://www.projectnoah.org/spottings/863... and http://www.projectnoah.org/spottings/844...
Sérgio, is either of these two butterflies common in or around Curitiba? This caterpillar could well be the opposite species of that shown in the above reference link.
Tricky one. Definitely a Heliconius sp., but I cannot tell you for your which one it is. They almost look all the same...