Taxonavigation

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Taxonavigation: Trochomorphoidea 

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Spiralia
Cladus: Lophotrochozoa
Phylum: Mollusca
Classis: Gastropoda
Subclassis: Heterobranchia
Infraclassis: Euthyneura
Cohors: Tectipleura
Subcohors: Panpulmonata
Superordo: Eupulmonata
Ordo: Stylommatophora
Subordo: Helicina
Infraordo: Limacoidei
Superfamilia: Trochomorphoidea

Familia: Dyakiidae
Genus: Dyakia
Species: Dyakia janus

Name

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Dyakia janus (Beck, 1837: 5)

Neotype: BMNH 42.5.10.1463
Type locality: Südsee (=Islands of South Sea) and Java.

Mentions

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  • Helix Ianus bifrons Chemnitz, 1795: 307, 308, pl. 213, Figs. 3016, 3017, type locality: Südsee [Rejected species-group name by the commission (ICZN, 1944: Opinion 184)]
  • Nanina (Ariophanta) janus Beck, 1837: 5.
  • Helix janus Pfeiffer, 1847: 88, 89, pl. 11, Figs. 4–6; Pfeiffer, 1848: 77
  • Helix sannio Pfeiffer, 1854: 57, type locality: unknown; Pfeiffer, 1859: 253
  • Nanina albersi Martens, 1864: 265, type locality: Malakka; Martens, 1867: 224, 225, pl. 2, Fig. 3; Tryon, 1886: 20, pl. 3, Fig. 37
  • Nanina sannio Tryon, 1886: 18, pl. 2, Fig. 26
  • Nanina janus Tryon, 1886: 19, pl. 3, Figs. 34, 36
  • Dyakia albersi Gude, 1903: 49
  • Dyakia sannio Laidlaw, 1931: 191, 201; Laidlaw, 1933: 234; Laidlaw, 1963: 146; Maassen, 2001: 107
  • Dyakia janus Laidlaw, 1931: 192, 200; Laidlaw, 1933: 226; Laidlaw, 1963: 141, 142; Maassen, 2001: 105

References

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  • Beck, H., 1837: Index Molluscorum Praesentis Aevi Musei Principis Augustissimi Christiani Frederici. Hafniae, Hanover. 170 pp.

  • Chirasak Sutcharit, Piyoros Tongkerd, Shau-Hwai Aileen Tan & Somsak Panha. 2012: Taxonomic revision of Dyakia janus from Peninsular Malaysia (Pulmonata: Dyakiidae), with notes on other sinistrally coiled helicarionoids. Raffles bulletin of zoology, 60(2): 279–287. PDF.