Hypselodoris decorata

Hypselodoris decorata
	Tulamben, Bali, Indonesia
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
(unranked):	clade Heterobranchia; clade Euthyneura; clade Nudipleura; clade Nudibranchia
Superfamily:	Doridoidea
Family:	Chromodorididae
Genus:	Hypselodoris
Species:	H. decorata
Binomial name
	Hypselodoris decorata; Risbec, 1928[1]

Hypselodoris decorata is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.[2]

Distribution

This nudibranch was described from New Caledonia. It is reported from the Marshall Islands, Vanuatu, Indonesia, Papua New Guinea, the Philippines and Malaysia.

Description

Hypselodoris decorata has a translucent cream to pink body with a broad brown band at the edge of the mantle and four thin opaque white lines on its dorsum. Between these lines are rows of red to purple spots. The anterior end is usually light-purple in colour with white and dark purple spots and the gills have bright red-orange pigment on the apices and outer surfaces. The rhinophores are white, with two red bands on the club and another at the base of the club. This species can reach a total length of at least 25 mm.[3] Previously considered to be a colour variety of Hypselodoris maculosa the distinctive features of this species were elucidated by an integrated molecular and morphological study.[4]

gollark: Can't just be 0xAAAAAAAA or whatever for RSA, it's two primes.

gollark: Who's going to check?

gollark: No, you just *guess* what it is.

gollark: You can exchange it for Freedom Dollars\™ and stuff.

gollark: I doubt they'll actually give you one.

References

Risbec J. 1928. Contribution à l’étude des nudibranches Néo-Calédoniens. Faune des Colonies Françaises 2: 1–328.
MolluscaBase (2018). Hypselodoris decorata (Risbec, 1928). Accessed on 2018-10-22
Gosliner, T.M., Behrens, D.W. & Valdés, Á., 2018. Nudibranch and Sea Slug Identification - Indo-Pacific. New World Publications; 2nd Revised, Updated edition. 452 pp. ISBN 1878348671, ISBN 978-1878348678, p. 191
Epstein, H. E.; Hallas, J. M.; Johnson, R. F.; Lopez, A.; Gosliner, T. M. (2018). Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae). Zoological Journal of the Linnean Society. 2018, XX, 1–74. With 40 figures.

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[1] Risbec J. 1928. Contribution à l’étude des nudibranches Néo-Calédoniens. Faune des Colonies Françaises 2: 1–328.

[2] MolluscaBase (2018). Hypselodoris decorata (Risbec, 1928). Accessed on 2018-10-22

[3] Gosliner, T.M., Behrens, D.W. & Valdés, Á., 2018. Nudibranch and Sea Slug Identification - Indo-Pacific. New World Publications; 2nd Revised, Updated edition. 452 pp. ISBN 1878348671, ISBN 978-1878348678, p. 191

[Epstein2018-4] Epstein, H. E.; Hallas, J. M.; Johnson, R. F.; Lopez, A.; Gosliner, T. M. (2018). Reading between the lines: revealing cryptic species diversity and colour patterns in Hypselodoris nudibranchs (Mollusca: Heterobranchia: Chromodorididae). Zoological Journal of the Linnean Society. 2018, XX, 1–74. With 40 figures.