Andesiana is a genus representing its own family Andesianidae and superfamily Andesianoidea, the "Andean endemic moths". It contains three species with a wingspan up to 5.4 cm. in female A. similis and 3.5 cm. in males (Davis and Gentili, 2003). This far surpasses in size any previously known monotrysian moth. These large Microlepidoptera[1]are restricted to Andean South America, from where they were described originally in 1989 in the family Cossidae by their discoverer Patricia Gentili.

Andesiana is a genus representing its own family Andesianidae and superfamily Andesianoidea, the "Andean endemic moths". It contains three species with a wingspan up to 5.4 cm. in female A. similis and 3.5 cm. in males (Davis and Gentili, 2003). This far surpasses in size any previously known monotrysian moth. These large Microlepidoptera[1]are restricted to Andean South America, from where they were described originally in 1989 in the family Cossidae by their discoverer Patricia Gentili.