Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Acanthonyx petiverii
cangrejo escudo, Shield kelp crab
Caparace width to 14 mm.
Infralittoral, rocky shores, clining algae.
Domain
Eukaryota
Kingdom
Animalia
Phylum
Arthropoda
Class
Malacostraca
Order
Decapoda
Suborder
Pleocyemata
Superfamily
Majoidea
Family
Epialtidae
Genus
Acanthonyx
Species
petiverii
Taxon category: Accepted
Syn.: Acanthonyx concamerata Kinahan, 1857, Acanthonyx debilis Dana, 1851, Acanthonyx emarginatus H. Milne Edwards & Lucas, 1843, Acanthonyx simplex Dana, 1852, fide Appeltans et al.(2010)
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: Gulf of California, Panamic, Chile-Perú: in Baja California, Mexico, to Chile and Ecuador (Galapagos Islands) also Atlantic
- Appeltans, W. Bouchet, P., Boxshall, G.A., Fauchald, K., Gordon, D.P., Hoeksema, B.W., Poore, G.C.B., van Soest, R.W.M., Stöhr, S., Walter, T.C., Costello, M.J. (eds.) (2010) World Register of Marine Species (WoRMS). Available online at http://www.marinespecies.org.
- Garth, J.S. (1991) Taxonomy, Distribution, and Ecology of Galápagos. Brachyura. In: James, M.J. (ed.): Galápagos Marine Invertebrates. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press. New York and London, p. 123-155.
- Hickman, C.P. Jr. Zimmerman, T.L. (2000) A Field Guide to Crustaceans of Galápagos. Sugar Spring Press, Lexington, Virginia, 156 pp.
- IUCN (2010) IUCN Red List of Threatened Species. Version 2010.1. <www.iucnredlist.org>. Downloaded on 26 April 2010.
You are welcome to download and use the information found in this page, acknowledging its source.
This page should be cited as follows:
"Galapagos Species Database, Acanthonyx petiverii", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=8473. Accessed 4 November 2026.