Species Christianoconcha orestias (Preston, 1913)

Christianoconcha orestias, dorsal view. Diameter of shell: 2.0 mm.

© Copyright John Stanisic BAAM Pty Ltd, Queensland.

Christianoconcha orestias, ventral view.

Museums

Regional Maps

• Paralaoma orestias Preston, H.B. 1913. Characters of new genera and species of terrestrial Mollusca from Norfolk Island. Annals and Magazine of Natural History 8 12: 522-538 [1 Dec. 1913] [534].

  Type data:

   
  Syntype(s) AM C38930 2 specimens, Mt Pitt, Norfolk Is.; AM C37156 2 specimens, Mt Pitt, Norfolk Is.; BMNH 1913.7.13.309-11 3 specimens, Mt Pitt, Norfolk Is.

Generic Combinations

• Christianoconcha orestias (Preston, 1913). —
  Stanisic, J., Shea, M., Potter, D. & Griffiths, O. 2010. Australian Land Snails. A field guide to eastern Australian species. Mauritius : Bioculture Press Vol. 1 595 pp. [186, 565]

Introduction

Christianoconcha orestias was originally placed in Paralaoma but is similar to C. quintali in all aspects except for the lack of apertural barriers. Uncommon.

Distribution

Extra Distribution Information

Australian Endemic.

Other Regions

Norfolk Island terrestrial & freshwater

Distribution References

Ecological Descriptors

Litter-dwelling, mixed forest.

Extra Ecological Information

Living on fallen palm leaves

Diagnosis

Shell minute, pale yellow, depressedly turbinate with weakly angulate whorls; protoconch with fine spiral lirae, teleoconch sculpture of arcuate, closely spaced radial ribs fine crowded spiral lirae; umbilicus moderately wide; diameter 2 mm.

Diagnosis References

Iredale, T. 1945. The land Mollusca of Norfolk Island. The Australian Zoologist 11: 46-71

Stanisic, J., Shea, M., Potter, D. & Griffiths, O. 2010. Australian Land Snails. A field guide to eastern Australian species. Mauritius : Bioculture Press Vol. 1 595 pp. [186]

General References

Preston, H.B. 1913. Characters of new genera and species of terrestrial Mollusca from Norfolk Island. Annals and Magazine of Natural History 8 12: 522-538 [1 Dec. 1913]

Stanisic, J., Shea, M., Potter, D. & Griffiths, O. 2010. Australian Land Snails. A field guide to eastern Australian species. Mauritius : Bioculture Press Vol. 1 595 pp. [186, 565]

Common Name References

Stanisic, J., Shea, M., Potter, D. & Griffiths, O. 2010. Australian Land Snails. A field guide to eastern Australian species. Mauritius : Bioculture Press Vol. 1 595 pp. [186] (Mount Pitt Pinhead Snail)

History of changes