Hypselodoris obscura

Hypselodoris obscura
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Order:	Nudibranchia
Suborder:	Doridina
Superfamily:	Doridoidea
Family:	Chromodorididae
Genus:	Hypselodoris
Species:	H. obscura
Binomial name
	Hypselodoris obscura; (Stimpson, 1855)[1]
Synonyms
	Chromodoris crossei (Angas, 1864) ; Goniodoris crossei Angas, 1864[2] ; Goniodoris obscura Stimpson, 1855 (original combination) ;

Hypselodoris obscura is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.[3] It is the type species of the genus Hypselodoris.[1]

This species eats sponges.

Distribution

This nudibranch was described from Port Jackson, Australia. It is a warm temperate species only found in Southeastern Australia. It is related to the widespread tropical species Hypselodoris infucata and the similar Australian species Hypselodoris saintvincentia.[4]

Description

Hypselodoris obscura has a mottled appearance due to a grey or grey-blue background colour with yellow and black spots, which vary considerably in size between individuals. There is a paler stripe down the midline. The edge of the mantle is pale blue alternating with yellow. The gills and rhinophores are bright red.[4]

References

Stimpson, W. (1855). Descriptions of some new Marine Invertebrata Proceedings of the Academy of Natural Sciences. 7: 385-394.
Angas, G. F. (1864). Description d´éspèces nouvelles appartenant à plusieurs genres de mollusques nudibranches des environs de Port-Jackson (Nouvelle-Galles du Sud), accompagnée de dessins faits d´après nature. Journal de Conchyliologie, series. 3(12): 43-70, pp. 54-55, Plate 5, Figure 1
MolluscaBase (2018). Hypselodoris obscura (Stimpson, 1855). Accessed through: World Register of Marine Species on 2018-10-26
Rudman, W.B., 1998 (November 28) Hypselodoris obscura Stimpson, 1855. [In] Sea Slug Forum. Australian Museum, Sydney.

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[stimpson-1] Stimpson, W. (1855). Descriptions of some new Marine Invertebrata Proceedings of the Academy of Natural Sciences. 7: 385-394.

[2] Angas, G. F. (1864). Description d´éspèces nouvelles appartenant à plusieurs genres de mollusques nudibranches des environs de Port-Jackson (Nouvelle-Galles du Sud), accompagnée de dessins faits d´après nature. Journal de Conchyliologie, series. 3(12): 43-70, pp. 54-55, Plate 5, Figure 1

[3] MolluscaBase (2018). Hypselodoris obscura (Stimpson, 1855). Accessed through: World Register of Marine Species on 2018-10-26

[ssf-4] Rudman, W.B., 1998 (November 28) Hypselodoris obscura Stimpson, 1855. [In] Sea Slug Forum. Australian Museum, Sydney.