Hawk moths

Left one is Manduca lucetius: http://www.silkmoths.bizland.com/mluceluc.htm http://www.papillon-poitou-charentes.org/Manduca-lucetius-Cramer-1780.html Right one is probably not a Manduca sp., but Isognathus sp.. Although I have literature about the Sphingidae in your area, this is quite a tricky one. I think it is Isognathus menechus http://www.guianensis.fr/images/sphingidae/macroglossinae/dilophonotini/Guy%2004306-s3.jpg http://www.silkmoths.bizland.com/imenechu.htm http://www.cate-sphingidae.org/taxonomy/Isognathus/menechus.html Look at the strong dark patch in the middle of the forewing, then you can see on both side another curved stripe towards the body. I think this is typical for Menechus and not seen in other Sphingidae.