Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Eucidaris thouarsii (L. Agassiz & Desor, 1846)

erizo lapicero, Pencil sea urchin, pencil-spined sea urchin

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Echinodermata

Class
Echinoidea

Order
Cidaroida

Superfamily
Cidaridea

Family
Cidaridae

Genus
Eucidaris

Species
thouarsii

Taxon category: Accepted

Origin: Native

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Throughout Gulf to Ecuador, Galápagos

References

  • Hickman, C.P. Jr. (1998) A Field Guide to Sea Stars and other Echinoderms of Galápagos. Sugar Spring Press, Lexington, Virginia, 83 pp.
  • 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.
  • Edgar, G.J. Fariña, J.M., Calvopiña, M., Martínez, C. & Banks, S. (2002) Comunidades submareales rocosas II: Peces y macroinvertebrados móviles. In: Danulat, E. & Edgar, G.J. (eds.) (2002): Reserva Marina de Galápagos. Línea Base de la Biodiversidad. Fundación Charles Darwin/Servicio Parque Nacional Galápagos, Santa Cruz, Galápagos, Ecuador, p. 68-97.
  • Maluf, L.Y. (1991) Echinoderm Fauna of the Galápagos Islands. In: James, M.J. (ed.): Galápagos Marine Invertebrates. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press, New York and London, p. 345-367.
  • Shepherd, S.A. Toral-Granda, V. & Edgar, G.J. (2003) Estimating the abundance of clustered and cryptic marine macro-invertebrates in the Galapagos with particular reference to sea cucumbers. Noticias de Galapagos 62: 36-39.
  • Constant, P. (2007) Marine Life of the Galapagos. The Diver's guide to Fishes, Whales, Dolphins and marine Invertebrates, 307 pp.
  • Hickin, N. (1979) Animal life of the Galapagos. Ferundune Books, Faringdon, U.K., 236 pp.

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, Eucidaris thouarsii", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=9241. Accessed 29 May 2025.