Atlanta ariejansseni Wall-Palmer, Burridge & Peijnenburg, 2016
This species has only been found from the Southern Subtropical Convergence Zone (37-48°S), with a circumglobal distribution.
Synonyms:
Atlanta helicinoides (Pilkington, 1970)
Atlanta gaudichaudi (Howard et al., 2011)
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The spire has 3¼ to 3½ whorls, is moderately high and rounded with deep whorl sutures.
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The spire is ornamented with numerous low projections roughly arranged in 9-12 spiral rows on whorls 2-4. These projections give the spire surface a rough appearance under a light microscope and can clearly be seen using SEM.
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The adult shell reaches 3.5 mm.
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The keel is tall with a yellow-brown keel base and has a slightly undulating shape.
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Soft tissues vary in colour from white, orange-pink and dark grey.
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Eyes type a, operculum type c, radula type I.
Similar species:
Further Reading:
Pilkington, M.C. 1970. Young stages and metamorphosis in an atlantid heteropod occurring off south-eastern New Zealand. Proceedings of the Malacological Society of London, 39: 117–124.
Wall-Palmer, D., Burridge, A.K., Goetze, E., Stokvis, F., Janssen, A.W., Mekkes, L., Moreno-Alcántara, M., Bednaršek, N., Schiøtte, T., Vinther Sørensen, M., Smart, C.W., Peijnenburg, K.T.C.A. Biogeography and genetic diversity of the atlantid heteropods. Progress in Oceanography, 160:1–25. doi: 10.1016/j.pocean.2017.11.004
Wall-Palmer, D., Metcalfe, B., Leng, M.J., Sloane, H.J., Ganssen, G., Vinayachandran, P.N., Smart, C.W. Vertical distribution and diurnal migration of atlantid heteropods. Marine Ecology Progress Series, 587: 1–15. doi: 10.3354/meps12464.
Wall-Palmer, D., Burridge, A.K., Peijnenburg, K.T.C.A. 2016. Atlanta ariejansseni, a new species of shelled heteropod from the Southern Subtropical Convergence Zone (Gastropoda, Pterotracheoidea). Zookeys, 604: 13-30.
