Itylos as defined by Vladimir Nabokov in 1945 is nowadays ''Madeleinea.

Itylos is a butterfly genus in the family Lycaenidae. There has been confusion regarding the correct name; the present genus was discussed in 1945 by the famous lepidopterologist and author Vladimir Nabokov as Parachilades but had been described already in 1921. Nabokov used the name Itylos for the genus which nowadays is known as Madeleinea.