Published December 31, 2006 | Version v1
Taxonomic treatment Open

Ponsadenia Schileyko 1978

Description

Ponsadenia Schileyko, 1978

Type species Helix semenovi Martens, 1864

Diagnosis. Mucous glands discharging either into twin reservoirs adjacent to the atrium, united to the apical portion of the dart sac via a “bridge”duct, or discharging into the same duct near its center.

Remarks. In Nordsieck’s system of Bradybaenidae(2002), the genus Ponsadenia is placed in the tribe Bradybaenini (sensu Nordsieck, 2002, = Bradybaeninae). The genus is not included in the phylogenetic analysis of Bradybaenidae mostly based on genital features (Wu 2004). Therefore, in the present work the systematic frame of both Schileyko (1978, subgenus subdivision) and Nordsieck (2002, subfamily placement) is adopted provisionally; any change should be expected only after necessary phylogenetic analysis.

The three subgenera of Ponsadenia are distinguishable by shell morphology. In Ponsadenia (s. str.), the shell is almost spherical, peripherically rounded and colored; in P. (Mesasiata), the shell is depressed, peripherically rounded and unicolored; in P. (Tarbagataja), the shell is depressed, sharply carinate and unicolored.

Notes

Published as part of Wu, Min & Guo, Jian-Ying, 2006, Revision of the Chinese species of Ponsadenia (Gastropoda: Helicoidea, Bradybaenidae), pp. 57-68 in Zootaxa 1316 on pages 58-59, DOI: 10.5281/zenodo.173950

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Linked records

Additional details

Biodiversity

Family
Bradybaenidae
Genus
Ponsadenia
Kingdom
Animalia
Order
Stylommatophora
Phylum
Mollusca
Scientific name authorship
Schileyko
Taxon rank
genus
Taxonomic concept label
Ponsadenia Schileyko, 1978 sec. Wu & Guo, 2006

References

  • Schileyko, A. A. (1978) Land mollusks of the superfamily Helicoidea. Fauna of the U. S. S. R., Mollusks, 3, 1 - 384.
  • Martens, E. von (1864) Drei centralasiatische Schnecken. Malakozoologische Blatter, 11, 114 - 119, Taf. 3, fig. 3 - 10.
  • Nordsieck, H. (2002) The systematics of the Bradybaeninae (Gastropoda: Stylommatophora: Bradybaenidae), an example for the work of divergent systematic schools. Mitteilungen der Deutschen Malakozoologischen Gesellschaft, 67, 41 - 47.
  • Wu, M. (2004) Preliminary phylogenetic study of Bradybaenidae (Gastropoda: Stylommatophora: Helicoidea). Malacologia, 46 (1), 79 - 125.