Aegires sublaevis

Aegires sublaevis  Odhner, 1932

Aegires sublaevis by Nani Díez Bosch













































Aegires sublaevis  Odhner, 1932

 Classification according to Bouchet et al. (2017)
Taxonomic source: World Register of Marine Species (AphiaID: 138707).
Small dorid nudibranch with a maximum recorded length of 12 mm. The body is tough and rigid. The base colour of the body is white to yellowish, translucent. There are some brownish grey patches, each edged by a ring of the opaque background coloration more apparent in mature specimens. There is a low dorsal ridge that widens to the back of the body, forming a triple gill cover, and splitting to the front of the body besides the rhinophoral sheaths. The Atlantic specimens have a distinct lateral ridge or mantle edge on each side of the body. There are few stalked dorsal tubercules typical of other Aegires species, but there are some rounded bumps scattered over the dorsum. It has no cerata. There are two white smooth rhinophores. Specimens from the Atlantic and Mediterranean have one ring of dark pigment on the rhinophores whereas those from the Galápagos have two dark rings. There is a bilobed oral veil in the anterior part of the body, however there are no propodial nor oral tentacles. The foot is not colored nor has any appendages.

It is reported to feed on the sponge Clathrina coriacea (Ros, 1977 – Canary Islands) and Clathrina sp. (Thompson, 1981 – Bermuda) where its colour pattern, specifically the dark patches distributed throughout the body, match that of the sponge. This species is easy to distinguish from related species by its colouration and shape. It is considered uncommon.


  • Aegires. From “Aegir”, god of the Sea in norse mythology.
  • Sublaevis. From latin “sub”, under, not quite + “laevis”, smooth. Not quite smooth.

This species has been reported from the Mediterranean Sea (Schmekel and Portmann, 1982), the Canary Islands (Odhner 1932; Altimira and Ros 1979; Pérez Sánchez, Bacallado and Ortega 1991; Ortea et al. 1996), Panama (Meyer, 1977), Bermuda (Thompson 1981) and Guadalupe (Ortea et al. 2012). There is another report from the Galápagos Islands (Fahey & Gosliner, 2004) which represents the first record of this species from the Pacific, identical in every aspect to the Atlantic specimens but for a second rhinophoral ring.

Known georeferenced records of the species: Aegires sublaevis
: GROC 2010-2011
: Enric Madrenas
: João Pedro Silva
: Bernard Picton
: Manuel Ballesteros.
: M@re Nostrum
: Altres fonts
: Marine Regions


    Western Mediterranean:1 out of 5 stars
    Eastern Mediterranean:0 out of 5 stars
    Atlantic Ocean:1 out of 5 stars

This chart displays the monthly observation probability for Aegires sublaevis based on our own records.


Aegires sublaevis @ La Herradura, Granada by Fernando Aguado

More pictures


    Altimira, C., and J. Ros. 1979. Algunos moluscos marinos de las Islas Canarias. Vieraea 8 (1): 3-12.
    Bacallado, J. J., J. Ortea, L. Moro, F. J. Martín Barrios, T. Cruz Simó, and R. Mesa Hernández. 2008. Inventario de los moluscos de la marina de Arrecife, Lanzarote. Canarias Conservación. 1–32.
    Ballesteros, M. 1980. Contribución al conocimientos de los Sacoglosos y Nudibranquios (Mollusca: Opisthobranchia). Estudio anatómico, sistemático y faunístico de las especies del mediterráneo español. Tesis Doctoral.
    Ballesteros, M., E. Madrenas, and M. Pontes. 2021. OPK - Opistobranquis. (
    Ballesteros, M., M. Pontes, and E. Madrenas. 2019. Els nudibranquis del mar català. Brau, Figueres.
    Behrens, D. W., and A. Hermosillo. 2005. Eastern Pacific nudibranchs : a guide of the opisthobranchs from Alaska to Central America. Sea Challengers, Monterey, CA.
    Caballer, M., J. Ortea, N. Rivero, G. Carias-Tucker, M. A. E. Malaquías, and S. Narciso. 2015. The opisthobranch gastropods (Mollusca: Heterobranchia) from Venezuela: an annotated and illustrated inventory of species. Zootaxa 4034 (2): 201–256.
    Calado, G. 2002. New records for the Azorean opisthobranch fauna (Mollusca: Gastropoda). Arquipélago (Life and Marine Sciences) 19 A: 105-108.
    Camacho-Garcia, Y., T. Gosliner, and A. Valdes. 2005. Guía de Campo de las babosas marinas del Pacífico Este tropical. California Academy of Sciences, S.l.
    Cattaneo-Vietti, R., and G. Barletta. 1984. Elenco preliminare dei molluschi opistobranchi viventi nel Mediterraneo (Sacoglossa, Pleurobranchomorpha, Acochlidiacea, Aplysiomorpha, Nudibranchia). Bollettino Malacologico (Pubblicazione Mensile Edita dalla Societa Italiana di Malacologia) 20(9-12):195-218.
    Cattaneo-Vietti, R., and T. E. Thompson. 1989. Mediterranean opisthobranch molluscs: a zoogeographic approach. Bollettino Malacologico (Pubblicazione Mensile Edita dalla Societa Italiana di Malacologia) 25(5-8):183-204.
    Cattaneo-Vietti, R., R. Chemello, and R. Giannuzzi-Savelli. 1990. Atlante dei nudibranchi del Mediterraneo. La Conchiglia, Rome 264 pp, 14 pls. (104 clr. ill), line drawings.
    Cervera, J. L., J. Templado, J. C. García-Gómez, M. Ballesteros, J. Ortea, F. J. García, J. Ros, and A. A. Luque. 1988. Catálogo actualizado y comentado de los Opistobranquios (Mollusca, Gastropoda) de la Península Ibérica, Baleares y Canarias, con algunas referencias a Ceuta y la isla de Alborán. Iberus, supl. 1: 1-84.
    Cervera, J. L., G. Calado, C. Gavaia, M. A. E. Malaquías, J. Templado, M. Ballesteros, J. C. García-Gómez, and C. Megina. 2004. An annotated and updated checklist of the opisthobranchs (Mollusca: Gastropoda) from Spain and Portugal (including islands and archipelagos). Boletín Instituto Español de Oceanografía, 20 (1-4): 1-111. L.
    Debelius, H., and R. H. Kuiter. 2007. Nudibranchs of the world. IKAN- Unterwasserarchiv, Frankfurt.
    Edmunds, M. 1987. Color in opisthobranchs. American Malacological Bulletin 5(2):185-196.
    Edmunds, M. 1987. Color in opisthobranchs. Western Society of Malacologists Annual Report 19:24.
    Edmunds, M. 1991. Does warning coloration occur in nudibranchs. Malacologia 32(2):241-255.
    Fahey, S. J., and T. M. Gosliner. 2004. A phylogenetic analysis of the Aegiridae Fischer, 1883 (Mollusca, Nudibranchia, Phanerobranchia) with descriptions of eight new species and a reassessment of Phanerobranch relationships. Proceedings of the California Academy of Sciences, (4) 55(34): 613–689.
    Flanders Marine Institute. 2018. Maritime Boundaries Geodatabase: Territorial Seas. Maritime Boundaries Geodatabase. (
    Garcia, F. J., and H. Bertsch. 2009. Diversity and distribution of the Gastropoda Opisthobranchia from the Atlantic Ocean: A global biogeographic approach. Scientia Marina. 73: 153–160.
    Jensen, K. R., and K. B. Clark. 1986. Class Gastropoda, (snails, limpets and slugs); pp 397-458, In: Wolfgang Sterrer (ed ). Marine fauna and flora of Bermuda. John Wiley & Sons. New York.
    Long, S. J. 2006. Bibliography of Opisthobranchia 1554-2000. Bayside Books & Press, Tustin, CA, U.S.A. 672p.
    Malaquias, M. A., and G. J. P. Calado. 1997. The malacological fauna of Salvage Islands - 1. Opisthobranch Molluscs. Bol. Mus. Mun. Funchal, 49(281): 149-170.
    Malaquias, M., G. Calado, V. Padula, G. Villani, and J. L. Cervera. 2009. Molluscan diversity in the North Atlantic Ocean: new records of opisthobranch gastropods from the Archipelago of the Azores. Marine Biodiversity. 2: e38.
    Malaquias, M. A. E., G. Calado, J. F. Da Cruz, and K. Jensen. 2014. Opisthobranch molluscs of the Azores, results of the IV Internationa Workshop of Malacology and Marine Biology (4-13 July 2011) (Mosteiros, São Miguel, Azores). Açoreana, 2014, Supplement 10: 139-147.
    Marcus, E. G., and E. d. B. R. Marcus. 1970. Opisthobranchs from Curacao and faunistically related regions. Studies on the fauna of Curacao and other Caribbean Islands 33(122):1-129; 160 figs.
    McDonald, G. 2009. Bibliographia Nudibranchia. 2nd Online Edition, Annotated. 1072 pp  Institute of Marine Sciences, University of California, Santa Cruz. (
    Meyer, K. B. 1977. Dorid nudibranchs of the Caribbean coast of the Panama Canal Zone. Bull. Mar. Sci. 27(2):299-307.
    Moro, L., and J. Ortea. 2015. Nuevos taxones de babosas marinas de las islas Canarias y de Cabo Verde (Mollusca: Heterobranchia). Vieraea. 43: 21-86.
    Moro, L., J. J. Bacallado, and J. A. Ortea. 2010. Babosas marinas de las islas Canarias. Actas VI Semana Científica Telesforo Bravo, Instituto de Estudios Hispánicos de Canarias.
    Moro, L., J. L. Martín Esquivel, M. J. Garrido Sanahuja, and I. Izquierdo Zamora. 2003. Lista de especies marinas de Canarias (algas, hongos, plantas y animales). Consejería de Política Territorial y Medio Ambiente del Gobierno de Canarias.
    Nordsieck, F. 1972. Die europäischen Meeresschnecken : (Opisthobranchia mit Pyramidellidae, Rissoacea) : vom Eismeer bis Kapverdem, Mittelmeer und Schawarzes Meer. Gustav Fischer, Stuttgart.
    Odhner, N. H. 1931. Beitrage zur Malakozoologie der Kanarischen Inseln. Lamellibranchien, Cephalopoden, Gastropoden. Arkiv för Zoologi, Stokholm 23A (14): 1-116 [aprile].
    Ortea, J. A. 1980. Inventario provisional de Ascoglosos y Nudibranquios de las islas Canarias. Resum 2nd. Congr. Nac. Malac., Barcelona, p 27.
    Ortea, J., L. Moro, and J. Espinosa. 2015. Estudio de un grupo de especies caribeñas enmascaradas en el nombre Aegires sublaevis Odhner, 1932 (Mollusca: Nudibranchia) utilizando técnicas tradicionales. Revista de la Academia Canaria de Ciencias. 27: 243-258.
    Ortea, J., A. A. Luque, and J. Templado. 1990. Contributions to the knowledge of the genus Aegires Lovén, 1844 (Opisthobranchia: Doridoidea: Aegiretidae) in the North Atlantic, with descriptions of two new species. Journal of Molluscan Studies. 56: 333–337.
    Ortea, J., J. Espinosa, M. Caballer, and Y. Buske. 2012. Initial inventory of the seaslugs (Opisthobranchia and Sacoglossa) from the expedition Karubentos, held in May 2012 in Guadeloupe (Lesser Antilles, Caribbean Sea). Revista de la Academia Canaria de Ciencias 24: 153-182.
    Ortea, J., L. Moro, and J. J. Bacallado. 2015. Babosas Marinas Canarias. Turquesa Ediciones.
    Ortea, J. A., L. Moro, J. J. Bacallado, J. M. Pérez Sánchez, and Y. Valles. 1996. Nuevos datos sobre la fauna de doridos farenobranquios (Gastropoda, Nudibranchia) de las Islas Canarias. Revista de la Academia Canaria de Ciencias 8 (2, 3 and 4): 125-138.
    Ortea, J. A., L. Moro, J. J. Bacallado, and R. Herrera. 2001. Catálogo actualizado de los Moluscos Opistobranquios de las Islas Canarias. Revista de la Academia Canaria de Ciencias 12 (3-4): 105-136.
    Ortea, J., M. C. L. Moro, and J. J. Bacallado. 2003. Resultados Científicos del proyecto “Macaronesia 2000” Chinijo-2002: Moluscos Opistobranquios. Revista de la Academia Canaria de Ciencias 14 (3-4): 165-180.
    Ortea, J., L. Moro, and J. Espinosa. 2019. Resultados de la expedición Mirpuri-2019 a la isla de Sal, Cabo Verde: nuevas citas y nuevos datos de lesmas do mar (Mollusca: Gastropoda). Avicennia. 25: 47–60.
    Pérez Sánchez, J. M., J. Ortea, and J. J. Bacallado. 1991. Doridáceos, Dendronotáceos y Aeolidáceos (Mollusca, Opisthobranchia) del Archipiélago Canario. Lavori S.I.M. Napoli 1990 23: 287-293. Atti Congr. Sorrento 29-31 magg. 1987.
    Ros, J. D. 1978. La alimentación y el sustrato en los opistobranquios ibéricos. Oecologia Aquatica 3: 153-166.
    Ros, J. D. 1976. Catálogo provisional de los opistobranquios (Gastropoda: Euthyneura) de las costas ibéricas. Miscelánea Zoologica, 3(5):21-51.
    Ros, J. D. 1977. La defensa en los opistobranquios. Investigacion y Ciencia (12):48-60.
    Ros, J. 1976. Sistemas de defensa en los Opistobranquios. Oecologia aquatica 2: 41-77.
    Rosenberg, G. 2009. Malacolog 4.1.1. A Database of Western Atlantic Marine Mollusca. The Academy of Natural Sciences, Philadelphia, PA.
    Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.

    Bibliography based on the works by Steve Long, 2006. Bibliography of Opisthobranchia 1554-2000 and Gary McDonald, 2009. Bibliographia Nudibranchia, with later updates from other resources.

Further reading

Cite this article as:

Pontes, Miquel, Manuel Ballesteros, Enric Madrenas (2021) "Aegires sublaevis" in OPK-Opistobranquis. Published: 11/09/2014. Accessed: 23/04/2021. Available at (

To copy this cite click on the right button.