Tonkinospira
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Ordo: Pulmonata
Familia: Platyglenidae
Name
Tonkinospira Jochum, Slapnik & Páll-Gergely nom. n. – Wikispecies link – Pensoft Profile
- Systenostoma Bavay & Dautzenberg, 1908: Journal de Conchyliologie, 56: 243.
- Systenostoma – Bavay and Dautzenberg 1909[1]: Journal de Conchyliologie, 57: 196. (diagnosis).
Remarks
The name Systenostoma Bavay & Dautzenberg, 1908 is preoccupied (non Systenostoma Marsson 1887[2], Bryozoa). Therefore, Tonkinospira Jochum, Slapnik & Páll-Gergely nom. n. is proposed as replacement.
Type species
Helix (Systenostoma) pauperrima Bavay & Dautzenberg, 1908 by subsequent designation (Pilsbry 1917[3]).
Diagnosis
A genus of small, conical or depressed-conical species with regularly growing, rounded or angulated whorls. The sculpture is characterized by spiral lines on both the protoconch and the teleoconch, decussated by irregular radial lines resulting in a reticulated surface structure. The aperture is toothless, adnate or slightly adnate and shows a sharp peristome.
Etymology
The new name is established by the fusion of Tonkin (northern Vietnam, the area of distribution) and the Latin spira (a coil, twist). Gender: feminine.
Remarks
Tonkinospira differs from Krobylos by the increased degree of angulation of the whorls and the lack of spiral lines on the teleoconch. For differences with Angustopila gen. n., see above.
The systematic position of the genus is questionable. It most probably belongs to the family Hypselostomatidae, but its relationship with other families such as Helicodiscidae (see Schileyko 1998[4]) or Valloniidae (see Schileyko 2011[5]) cannot be excluded.
Distribution
So far, the genus is reported from Northern Vietnam only.
Taxon Treatment
- Jochum, A; Slapnik, R; Kampschulte, M; Martels, G; Heneka, M; Páll-Gergely, B; 2014: A review of the microgastropod genus Systenostoma Bavay & Dautzenberg, 1908 and a new subterranean species from China (Gastropoda, Pulmonata, Hypselostomatidae) ZooKeys, 410: 23-40. doi
Other References
- ↑ Bavay A, Dautzenberg P (1909) Description de Coquilles Nouvelles de l’Indo-Chine. Journal de Conchyliologie 57: 163-206.
- ↑ Marsson T (1887) Die Bryozoen der weissen Schreibkreide der Insel Rügen. Paläontologische Abhandlungen 4: 1-122.
- ↑ Pilsbry H (1916–1918) Manual of Conchology, Second Series: Pulmonata, Vol. 24, Pupillidae (Gastrocoptinae). Conchological Department, Academy of Natural Sciences of Philadelphia, Philadelphia, 380 pp, plates 1–50. http://biodiversitylibrary.org/item/16727#page/5/mode/1up
- ↑ Schileyko A (1998) Treatise on Recent terrestrial pulmonate molluscs. Part 2. Gastrocoptidea, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachynodidae, Enidae, Sagdidae. Ruthenica Supplement 2(2): 129-261.
- ↑ Schileyko A (2011) Check-list of land pulmonate molluscs of Vietnam (Gastropoda: Stylommatophora). Ruthenica 21(1): 1–68. http://www.ruthenica.com/documents/vol21_Schileyko_1-68.pdf
