Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Atrimitra effusa
Mitra amplia, Protracted miter
( M. effusa) Length: 33 mm, diameter: 9 mm.
( M. effusa) Shallow water (less than 200 m depth), low interdidal and subtidal.
Domain
Eukaryota
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Superfamily
Mitroidea
Family
Mitridae
Genus
Atrimitra
Species
effusa
Taxon category: Accepted
Syn.: Mitra (Nebularia) effusa Broderip, 1836, Mitra effusa Broderip, 1836 (Horton et al., 2021).; ( M. effusa) MNH: 139537, ANSP: 153210, 153425, 170353, USNM: 102391, 678908, LACM: D-89, D-90, 66-209, AHF 69-33, AHF 319-35, AHF 789-38, BMNH: 1966415/1 (Lectotype), 1966415/2-3 (Paralectotypes) (Loc.: Guacomayo & Galapagos), CDRS: 491 B
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: ( M. effusa) Mexico to Ecuador including Galapagos Islands
- Broderip, W.J. (1836) Characters of New Genera and Species of Mollusca and Conchifera, collected by Mr. Cuming. Proc. Zool. Soc. London (1835): 192-197 (Apr. 8, 1836).
- 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.
- Finet, Y. (2001) The marine mollusks of the Galapagos Islands: a documented faunal list. Editions du Muséum d' Histoire naturelle, Genève, 237 pp.
- Hickman, C.P. Jr. (1998) A Field Guide to Sea Stars and other Echinoderms of Galápagos. Sugar Spring Press, Lexington, Virginia, 83 pp.
- 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.
- Keen, A.M. (1958) Sea Shells of Tropical West America. Stanford University Press, Palo Alto, 1st edition, 624 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, Atrimitra effusa", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=19920. Accessed 8 June 2026.