DYAR (1897) proposed the first classification of world notodontids based on adult and larval characters. Despite of being an important contribution, this work does not give emphasis to the Neotropical fauna. The current classification of Notodontidae is based on the works of MILLER (1991, 1992a) and is supported to a great extent by larval, pupal and adult characters. According to this author, the family is divided into nine subfamilies. Of these, six include Neotropical species: Notodontinae, Dudusinae, Dioptinae, Pygaerinae, Heterocampinae and Nystaleinae.