Atlanta echinogyra Richter, 1972
This species is recognised by the moderately tall and heavily-ornamented red-brown spire. Atlanta echinogyra is not recorded from the Atlantic Ocean.
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Spire moderately tall and conical in shape. Not as tall as A. brunnea, but taller than A. plana. The spire is slightly tilted and consists of 4 to 4¼ whorls.
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The spire has clear ornamentation in the form of elevated spiral ridges, similar in pattern to A. brunnea.
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The spire is often a deep red-brown colour, but the adult whorl and keel are colourless.
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The adult shell is small, up to around 2.5 mm
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Eyes type a, operculum type c, radula type I.
Similar species:
Further reading and images:
Richter, G. 1987. Zur Kenntnis der Gattung Atlanta, 3. Atlanta inflata, A. helicinoides, A. echinogyra und A. plana (Prosobranchia: Heteropoda). Archiv für Molluskenkunde, 117: 177-201.
Seapy, R.R. 1990. The pelagic family Atlantidae (Gastropoda: Heteropoda) from Hawaiian waters: a faunistic survey. Malacologia, 32: 107–130.
Seapy, R.R., Lalli, C.M. & Wells, F. 2003. Heteropoda from Western Australian waters. In: The marine flora and fauna of Dampier, Western Australia (F.E. Wells, D.I. Walker & D.S. Jones, eds), pp. 513–546.Western Australian Museum, Perth.
Seapy, R.R. 2011. Atlantidae. In: Tree of life web project. Available at http://tolweb.org/Atlantidae accessed 1 April 2017.
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., Smart, C.W., Kirby, R., Hart, M.B., Peijnenburg, K.T.C.A., Janssen, A. 2016. A review of the ecology, palaeontology and distribution of atlantid heteropods (Caenogastropoda: Pterotracheoidea: Atlantidae). Journal of Molluscan Studies, 1-14.
