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Doto crassicornis

Sars M., 1870


Erling Svensen And this one, Doto lemchei? 1 cm specie from Gulen, Norway.

Bernard Picton Not Doto lemchei, but one of the Doto fragilis complex. Interesting lobed rhinophore sheaths on this one, which might be important, Doto cuspidata and Doto crassicornis have this character.

Erling Svensen Ok, Bernard, I call him Doto cuspidata var. Svensiensis

Bernard Picton var. svenseni - -ensis is for places so gulenensis...

Message posted on NE Atlantic Nudibranchs on 23 Mar 2013
Christian Skauge Finally - the report from the 2012 Nudibranch Safari at Gulen Dive Resort. Lots of images - go have a look :-)

Klas Malmberg Aquatilis Looking good!

Bernard Picton Nice Christian, but I don't think that is Doto hystrix! I think it's something I've never seen, but I'm wondering about Doto crassicornis...

Jussi Evertsen Large individuals fit the description for Doto hystrix, the really small ones had less prominent characters, but all had tubercles also on the back. Doto crassicornis is something else.

Klas Malmberg Aquatilis I am very interested in this discussion. Doto hystrix or crassicornis... Spiky cerata but not really spiky sheats, more vavy sheats, what could this be?

Bernard Picton Jussi, I'd really like to see photographs of Doto crassicornis, as I've never seen it. Lemche also illustrates a specimen as Doto cuspidata which looks like this, but is not the same as the thing we are calling D. cuspidata in Britain and Ireland.

Jussi Evertsen Christian has all the photos. Doto cuspidata as by Lemche differs from eg descriptions in Thompson & Brown. I after that there is somekind of transition between Doto fragilis to crassicornis to the small ind of hystrix.

Christian Skauge I'll try to get the photos posted as soon as possible... But there are unfortunately not too many. But you guys collected some, didn't you?

Torkild Bakken We collected specimens of Doto hystrix, as Jussi said they conformed well to the description in Thompson & Brown, we will have to wait for results. Doto crassicornis is on our list to check out. We have found some good specimens from near the type locality that we suspect may be the "real" one. But, a lot more work has to be done. Doto in Norwegian waters are more species than previously known, no doubt.

Bernard Picton Doto everywhere I think, not just Norwegian waters. Torkild Bakken, Are you keeping a sample of the hydroid you find them on? If you want a hand identifying the hydroids I can help - also I'll try and get round to putting up the different types I've seen on here.

Message posted on NE Atlantic Nudibranchs on 30 Mar 2012
Taxonomy
Animalia (Kingdom)
  Mollusca (Phylum)
    Gastropoda (Class)
      Heterobranchia (Subclass)
        Opisthobranchia (Infraclass)
          Nudibranchia (Order)
            Dexiarchia (Suborder)
               Dexiarchia (Infraorder)
                Dotidae (Family)
                  Doto (Genus)
                    Doto crassicornis (Species)
Associated Species