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Eualus pusiolus

(Krøyer, 1841)


Nils Aukan Dwarf-shrimp,Eualus pusiolus,in soft coral,Kristiansund,Norway,3.03-2013

Message posted on UWphotographers on 10 Mar 2013
Charlotte Bolton Teeny-tiny shrimp on Thatcher's Reef, just south of Torquay (south Devon), 13m bsl. Not convinced they're Pandalus or even the same species? Any suggestions gratefully received - thanks!

David Kipling Nice red siphons too

Charlotte Bolton Please feel free to ID the siphons too David ;-)

David Kipling What do you think, Charlotte?

Charlotte Bolton About these siphons, crustacea or more generally?

David Kipling Red siphons.

Richard Girdler They're red ;)

David Kipling And formally speaking I was referring to the red siphons at the front, not the Dendrodoa-esque ones in the top RHS...

Charlotte Bolton The hive mind here (me, Dawn - she says hello - and Richard) is undecided...

Peter H van Bragt 3rd picture is unmistakenly Thoralus cranchii the other shrimp could very well be a Pandalus sp.

Charlotte Bolton We are all looking at the same thing then. So far we've decided that Pyura are stripy, Polycarpa are further apart and limp, and, umm, we can't remember the rest...

David Kipling Argh!!!

Charlotte Bolton Thankyou Peter!

David Kipling A few more siphons for Dawn (who should know better) and Charlotte.

Richard Girdler Stop hijacking my thread :p

David Kipling You know the shrimp now, all we need is the siphon ID Richard :)

Erling Svensen It is very, very difficult to see the difference between the T. Cranchii, the Eualus pusiolus and Eualus occultus. We need really good Pictures of the head where it is possible to see spikes, teets on the rostrum etc. So I do not agree with you, Peter. :-)

Peter H van Bragt Erling, the uplifted tail is a very characteristic posture for T. cranchii

Marco Faasse The largest shrimp looks like Pandalina brevirostris, the smaller one like an Eualus. The genus Thoralus has been synonymised with Eualus.

Richard Girdler Sorry about the quality erling but it was an 'accidental' shot, didn't realise they were there until I downloaded camera - even then I didn't see the lower right shrimp straight away

Message posted on Seasearch Identifications on 03 Sep 2013
Paula Lightfoot Can anyone identify this colourful crustacean, which was about 1.5cm long and found in a rockpool in Yorkshire? I was thinking maybe Eualus cranchii (formerly Thoralus)

Christian Skauge How about a Eualus pusiolus?

Andy Horton This is newsworthy as well. I have never received an intertidal report of this prawn-like.

Andy Horton http://www.horta.uac.pt/intradop/images/stories/arquipelago/19a/6_Dacoz_Wirtz_19A.pdf

João Pedro Silva Every once in a while I shoot some shrimps and show them to Ricardo Jorge Guerra Calado, so maybe he can help. Eualus sp. are very difficult, if not impossible, to identify through photos alone.

Chris Barrett Sue Hull and I caught one of these early in the year and she took it back to ID. Not sure what became of it though

Paula Lightfoot Thanks - I did suspect it might not be possible to ID to species level without a specimen, still if the genus can be confirmed that would be interesting. I'll ask Sue about the other specimen.

Chris Barrett I think you're right - if I remember, I think we were both lacking a camera at the time! Ours was found on the sheltered side of Filey Brigg

Message posted on Seasearch Identifications on 22 Jul 2012
Taxonomy
Animalia (Kingdom)
  Arthropoda (Phylum)
    Crustacea (Subphylum)
      Malacostraca (Class)
        Eumalacostraca (Subclass)
          Eucarida (Superorder)
            Decapoda (Order)
              Pleocyemata (Suborder)
                Caridea (Infraorder)
                  Alpheoidea (Superfamily)
                    Hippolytidae (Family)
                      Eualus (Genus)
                        Eualus pusiolus (Species)
Associated Species