Yesterday we wore shorts & t-shirts to Parque Nacional Calilegua. We are well-bitten, a bit swollen & sore -- Mike says "really sore" -- around the bites. Raúl said mosquitos. At the time we thought them tiny flies. In any case, next time we'll wear long pants & long-sleeved shirts.
Today we're heading up to the Bolivian border & Parque Nacional Baritu. Not sure if we'll explore the park this time or just take a peek.