Thelacantha is a spider genus of the Araneidae family with only one described species, Thelacantha brevispina. The species is closely related to Gasteracantha, and was synonymized with it in 1859, but revalidated in 1974.
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