Since the publication of A Guide to the Hawkmoths of the Serra dos Orgaos, South-eastern Brazil in May 2011, there have been a number of taxonomic changes amongst the region’s Sphingidae, and in addition we have also found two significant errors on the identification plates. Therefore, we have produced an addendum to accompany the book, which also includes details of two new species for Rio state. To download the addendum, click here. If you would like a copy of the book then you can purchase it either through NHBS (who can ship worldwide), or by emailing Alan Martin at alanjmart@gmail.com.