Stenarcha is a genus of moths in the family Arctiidae. It contains the single species Stenarcha stenopa, which is found in southern Western Australia. The forewings are patterned in grey, black and brown. The hindwings are grey. The larvae probably feed on lichens.
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