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Henricia sanguinolenta

Fisher, 1911

Erling Svensen Bernard Picton asked me to take pictures of Henricia species so see it is possible to separate the various species by pictures only. I will add 4 posts here, each with one picture of the whole animal, and one picture with details. These 4 can well be the same species, but I hope after some time to post of different species. Please take a look and see if it is possible to distinguish the different species from eachother. The 4 species we have in Norway are: H. perforata, H. sanguinolenta, H. pertusa and H. oculata.

Rachel Shucksmith I'd be interested to know the answer to this Erling Svensen

Cynthia D. Trowbridge Molecular and morphometric work was needed to sort out the Pacific ones.

Bernard Picton We have a good morphological investigation, but it is hard to recognise the species in the field and I hope we can make it easier. Madsen, F.J. (1987). The Henricia sanguinolenta complex (Echinodermata, Asteroidea) of the Norwegian Sea and adjacent waters. A re-evaluation, with notes on related species. Steenstrupia 13(5): 201-268.

Cynthia D. Trowbridge That was/is a challenge for us as well :-(

Bernard Picton We think that only Henricia oculata is present in the south of the UK. Can anyone in SW England or Wales take some photographs this detailed to show the spines supporting the skin? In H. oculata the skin is supposed to be thicker and the spines in bigger groups than in these ones from Norway.

Rachel Shucksmith I think Lin Baldock has been taking pictures of them Bernard Picton on the S coast as we were discussing them this summer. Are you friends with her on Facebook, because I'm not and I cant remember what she said her name is on here (and its not Lin or Belinda...)

Message posted on Echinoderms of the NE Atlantic on 15 Oct 2013
Animalia (Kingdom)
  Echinodermata (Phylum)
    Asterozoa (Subphylum)
      Asteroidea (Class)
        Spinulosacea (Superorder)
          Spinulosida (Order)
            Echinasteridae (Family)
              Henricia (Genus)
                Henricia sanguinolenta (Species)
Associated Species