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Discodoris lilacina

(Gould, 1852)


Damian Hofman Hoplodoris grandiflora?? Clifton Gardens 3m depth and about 70mm long.

Gary Cobb This looks like Tayuva lilacina (Gould, 1852), previously known as Discodoris lilacina. It can not be of the genus Hoplodoris because the mantle does not have large, rounded tubercles that decrease in size towards the mantle edge. And the mantle has been autonomised. A ventral view would be very helpful. Your animal's mantle is covered with small papillae and rhinophores have a raised rhinophoral pocket.

Ana Karla Araújo This is from Brazil, too.

Ana Karla Araújo So, what do you think?

Gary Cobb I think your animals could be Discodoris fragilis. Bill Rudman said 'Discodoris lilacina' and 'Discodoris fragilis' are found from the eastern Atlantic and Mediterranean. Were your animals found in deep water or shallow water?

Ana Karla Araújo shallow, under rocks.

Gary Cobb Just my thoughts...

Ana Karla Araújo But, this is quite different from your other post.

Ana Karla Araújo How could it be the same?

Gary Cobb This group is very difficult to ID from external anatomy. Only internal anatomy or DNA can separate the species absolutely. Discodoris fragilis is also found under rocks in shallow water.

Ana Karla Araújo But, could it be D. branneri? Or is it more like D. fragilis? In your opinion.

Gary Cobb Just to be safe call it Montereina cf. branneri (MacFarland, 1909) (It appears the genus has changed). 'cf' meaning 'similar to' until a positive ID can be made.

Ana Karla Araújo Ok! Thanks! =]

Gary Cobb Glad to help.

Vinicius Padula Hi Gary, definitely a group that needs a revision (the Discodorididae in general), almost nothing also with DNA. In the case of D. branneri, it has a big spined penis, what I remember is absent in other similar species. Besides D. fragilis, there is D. lilacina, D. confusa, D. maculosa... :0

Vishal Bhave and what is a status of Montereina concinna by (Alder and Hancock, 1864) ??

Gary Cobb True Vinnie we can only hazard a guess sometime.

Message posted on EPAM Nudibranchs on 14 Jun 2012
Stefan Follows Any ideas? Quite a large fellow! About 15cm long at a depth of 5ish meters on sand next to the pier in Chalokulm, Koh Pha Ngan, Thailand. Moving quite fast so kinda' reminded me of a hovercraft ;)

Roy Arthur David Lontoh Discodoris lilacina?

Stefan Follows Thanks Roy Arthur David Lontoh looks likely :)

Erwin Koehler I just checked the SSF (sea slug forum) -wayback machine-, it gives 120 mm to Discodoris lilacina, IPN writes only 60 mm

Lindz Warren or possibly Sebadoris nubilosa (Pease, 1871) given the size and appearance.

Taxonomy
Animalia (Kingdom)
  Mollusca (Phylum)
    Gastropoda (Class)
      Heterobranchia (Subclass)
        Opisthobranchia (Infraclass)
          Nudibranchia (Order)
            Euctenidiacea (Suborder)
              Doridacea (Infraorder)
                Doridoidea (Superfamily)
                  Discodorididae (Family)
                    Discodoris (Genus)
                      Discodoris lilacina (Species)
Associated Species