Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Thylacodes margaritaceus
Caracol gusano, Worm snail
(S. margaritaceus ) Length: 60 mm.
(S. margaritaceus ) Shallow water (less than 200 m depth), intertidal.
Domain
Eukaryota
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Littorinimorpha
Superfamily
Vermetoidea
Family
Vermetidae
Genus
Thylacodes
Species
margaritaceus
Taxon category: Accepted
Syn.: Serpulorbis margaritaceus (Chenu, 1844), Vermetus margaritaceus Rousseau in Chenu, 1844, Vermetus margaritarum Valenciennes, 1846 (Horton et al., 2021); (S. margaritaceus ) CAS: 23162, MHNG: 993-136, FNRS-Belgian expedition to the Galapagos, 1984, MHNG: expedition to the Galapagos, 1993
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: (S. margaritaceus ) Gulf of California to Ecuador (Galápagos Islands).
- Hickman, C.P. Jr. Finet, Y. (1999) A Field Guide to the Marine Molluscs of Galápagos. Sugar Spring Press, Lexington, Virginia, 150 pp.
- Finet, Y. (1991) The Marine Mollusks of the Galapagos Islands. In: Galápagos Marine Invertebrate. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press. New York and London, p. 253-280.
- Bustamante, R.H. Vinueza, L.R., Smith, F., Banks, S., Calvopiña, M., Francisco, V., Chiriboga, A., Harris, J. (2002) Comunidades submareales rocosas I: Organismos sésiles y mesoinvertebrados 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. 38-67.
- Banks, S. Vera, M. & Chiriboga, A. (2009) Establishing Reference Points to Assess Long-Term Change in Zooxanthellate Coral Communities of the Northern Galapagos Coral Reefs. J. Sci. Conserv. in the Galapagos Islands, p. 43-64.
- Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.
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, Thylacodes margaritaceus", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=19915. Accessed 10 May 2025.