Pseudamastus is a genus of arctiine tussock moths in the Erebidae family. The genus contains only one species, Pseudamastus alsa, which is found on Dominica, Guadelope and Martinique.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0