Nyceryx riscus
 Nyceryx riscus is a moth of the Sphingidae family. It is found from Belize and Mexico to Costa Rica and further south to Bolivia and Argentina.The wingspan is 50-58 mm. It is similar to Nyceryx stuarti but smaller and paler. There is an indistinct grey-centred discal spot and a conspicuous black dot distal of it towards the costa on the forewing upperside.Adults are probably on wing year round.The larvae feed on mature leaves of Xylophragma seemannianum.