The only known syntype of Cancer setosus Fabricius, 1798 (currently Pseudograpsus setosus) is extremely deteriorated. With this ruling it has been replaced with a neotype. Cancer setosus Fabricius, 1798 has been accepted by carcinologists as a senior subjective synonym of Grapsus penicilliger Latreille, 1817 and Pseudograpsus barbatus H. Milne Edwards, 1853 for 150 years, and as such, it is essential that a recognisable type be available to the scientific community.
Cancer setosus Fabricius, 1798 (currently Pseudograpsus setosus; Crustacea, Decapoda): replacement of a syntype by a neotype approved," The Bulletin of Zoological Nomenclature 65(4), 323-324, (1 December 2008). https://doi.org/10.21805/bzn.v65i4.a18