Calvactaea tumida is a species of crabs in the family Xanthidae, the only species in the genus Calvactaea. Found primarily off the coast of New South Wales, Australia, as well as, Sri Lanka, China, Taiwan, and Japan.
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