Plakobranchidae

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Family of gastropods

title: "Plakobranchidae" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["plakobranchidae", "gastropod-families", "taxa-named-by-john-edward-gray"] description: "Family of gastropods" topic_path: "general/plakobranchidae" source: "https://en.wikipedia.org/wiki/Plakobranchidae" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Family of gastropods ::

| image = Lettuce Sea Slug 11-03-2006.jpg | image_caption = A live individual of Elysia crispata, head end towards the lower right | taxon = Plakobranchidae | authority = Gray, 1840 | synonyms =

  • Placobranchidae Gray, 1840
  • Actaeonidae Allman, 1845
  • Boselliidae Ev. Marcus, 1982
  • Elysiidae Forbes & Hanley, 1851 | synonyms_ref =

Plakobranchidae is a family of sea slugs, marine opisthobranch gastropod mollusks in the superfamily Plakobranchoidea. They superficially resemble nudibranchs but they are sacoglossans, members of the clade Sacoglossa within the Opisthobranchia.

::figure[src="https://upload.wikimedia.org/wikipedia/commons/5/50/Placobranchus_ocellatus002.jpg" caption="Two ''[[Plakobranchus ocellatus]]'' seaslugs"] ::

::figure[src="https://upload.wikimedia.org/wikipedia/commons/1/19/Thuridilla_carlsoni.png" caption="''[[Thuridilla carlsoni]]''"] ::

Taxonomy

Elysiidae was originally described as "Elysiadae" by Forbes & Hanley in 1851 in the book A history of British Mollusca and their Shells 3:613. In the taxonomy of Bouchet & Rocroi (2005), the family Elysiidae is considered to be a synonym of the family Plakobranchidae Gray, 1840.

The original spelling Placobranchidae, based on Placobranchus, an incorrect subsequent spelling by Férussac (1824) in a translation of van Hasselt's work. Franc (1968: 848) and Jensen (1996: 92) attributed the name to Rang, 1829 (p. 134), who used the vernacular "les Placobranches". Jensen (1997: 180-181) argued for the restoration of the spelling Plakobranchidae, and she has been followed by Wägele & Willan (2000: 91). Bouchet & Rocroi (2005: 133), argued that the spellings Placobranchus and Placobranchidae were in prevailing usage and were conserved under Art. 33.3.1. This view has been challenged by R. Burn and the spelling Plakobranchidae is now preferred.

This family has no subfamilies.

Genera

Genera in the family Plakobranchidae are:

Image:Elysia timida (Risso, 1818) cropped.jpg|Elysia timida Image:Placobranchus ocellatus001.jpg|Plakobranchus ocellatus Image:Thuridilla decorata.jpg|Thuridilla decorata Image:Thuridilla hopei (Vérany, 1853) sur Codium fragile (Suringar) Hariot, 1889.jpg|Thuridilla hopei Image:Thuridilla moebii.JPG|Thuridilla moebii

References

References

  1. [[John Edward Gray. Gray J. E.]] (1840). ''Shells of molluscious animals''. In: Synopsis of the contents of the British Museum, ed. 42: 121, 148.
  2. (2024). "Plakobranchidae Gray, 1840".

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plakobranchidaegastropod-familiestaxa-named-by-john-edward-gray