Labidodemas: Brief Summary
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Labidodemas is a genus of marine sea cucumbers in the family Holothuriidae. The genus was erected by Emil Selenka in 1867.
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Classification
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In 1981, James raised the genus Labidodemas to family level, establishing the Labidodematidae.
- Appeltans, W. (2002). Phylogeny of the Holothuriidae (Echinodermata: Holothuroidea) inferred from morphology. MSc Thesis. Vrije Universiteit Brussel: Brussel, Belgium. 94 pp.
- James, D.B., 1981. Studies on Indian echinoderms, 7. On a new family Labidodematidae (Holothurioidea : Aspidochirotida) with a detailed description of Labidodemas rugosum (Ludwig) from the Andamans. J. mar. biol. Ass. India, 23(1&2): 82-85.
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Classification
provided by World Register of Marine Species
Morphological cladistics show Labidodemas is firmly nested within Holothuria. If we accept our phylogeny and we downgrade Labidodemas to the subgeneric level (as a subgenus of Holothuria), amendment of the current classification is reduced to nomenclatural changes. However, given the size of Holothuria (18 subgenera, comprising some 150 species) and the possibility of deeper paraphyly, we prefer to adopt an eclectic or Darwinian classification (a classification that is based on the criteria of similarity and common descent; see also Mayr, 1982; Mayr & Bock, 2002) and, as such, retain the generic rank of the easily recognized Labidodemas (for its synapomorphies, see Massin et al., 2004).
- Samyn, Y.; Appeltans, W.; Kerr, A.M. (2005). Phylogeny of Labidodemas and the Holothuriidae (Holothuroidea: Aspidochirotida) as inferred from morphology. Zool. J. Linn. Soc. 144(1): 103-120.
- Massin, Cl.; Samyn, Y.; Thandar, A.S. (2004). The genus Labidodemas (Holothuroidea: Aspidochirotida) revisited, with description of three new species and with re-positioning of Holothuria (Irenothuria) maccullochi Deichmann, 1958. J. Nat. Hist. 38(14): 1811-1847.
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