Английская Википедия:Hauffenia sp. nov.

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Hauffenia sp. nov. is an as yet undescribed (in 2013)[1] species of freshwater snail that lives underground, an aquatic gastropod mollusk in the family Hydrobiidae. This species is found in Slovakia.

Taxonomy

The genus Hauffenia is taxonomically problematic.[2]

Šteffek et al. (2011)[3] confirmed that the snail from Slovakia appears to belong to the genus Hauffenia, based on the morphology of the penial characters.[3]

However, molecular phylogeny research based on sequences of mitochondrial cytochrome-c oxidase I (COI) genes appears to demonstrate that although these snails belong to the family Hydrobiidae, they are not closely related to the genus Hauffenia.[3]

These snails from Slovakia may actually represent not one species but two genera: Hauffenia and Lobaumia.[3]

Specimens of this species are preserved in private collections.[2]

Distribution

This species is endemic to Slovakia.[4] It lives only in the Slovak Karst, where it was discovered in the 1980s.[4]

The former (subrecent) distribution of this species included also Miličské travertíny travertines near Banská Bystrica.[4]

Description

The shape of the shell is valvatiform. The shell is thin-walled and glossy.[3] The shell has 2–2.5 rapidly but regularly growing whorls.[3] The spire is low or very low.[3] The umbilicus is very wide, with the earlier whorls visible inside.[3] The teleoconch is very finely sculptured with weakly marked growth lines.[3] The protoconch has about 1¼ whorls growing slowly; the border between the proto- and teleoconch is indistinct; the protoconch surface is nodular.[3]

The width of the shell is up to 1.2 mm[4] or up to 1.8 mm.[3] The height of the shell is up to 0.8 mm[4] or up to 0.9 mm.[3]

Файл:Hauffenia from Slovakia shell 2.png
Photo of apical view.
Файл:Hauffenia from Slovakia shell 3.png
Photo of umbilical view.

The animal has no body pigment and no eyes.[3]

The sexes are distinct (females and males occur). Reproductive system: The penis is broad and blunt, has a weakly marked lateral lobe on its left side near the apex, a very small stylet, a penial duct running in a zigzag, and no visible trace of an ejaculatory duct.[3] The female reproductive organs are of Hauffenia-type.[3]

Ecology

This species lives in subterranean waters[4] and in springs.[1] This species is very rare.[3]

References

This article incorporates CC-BY-3.0 text from the reference[3] Шаблон:Reflist

External links

Шаблон:Taxonbar

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  1. ↑ 1,0 1,1 Horsák M., Juřičková L. & Picka J. (2013). Měkkýši České a Slovenské republiky. Molluscs of the Czech and Slovak Republics. Kabourek, Zlín, 264 pp. p. 44-45 (in Czech and English).
  2. ↑ 2,0 2,1 Čejka T., Dvořák L., Horsák M. & Šteffek J. (2007). "Checklist of molluscs (Mollusca) in the Slovak Republic". Folia Malacologica 15(2): 49-58.
  3. ↑ 3,00 3,01 3,02 3,03 3,04 3,05 3,06 3,07 3,08 3,09 3,10 3,11 3,12 3,13 3,14 3,15 3,16 Šteffek J., Falniowski A., Szarowska M. & Grego J. (2011)."“Hauffenia” Pollonera, 1898 (Caenogastropoda: Hydrobiidae) in Slovakia: a preliminary report". Folia Malacologica 19(1): 1-7. PDF.
  4. ↑ 4,0 4,1 4,2 4,3 4,4 4,5 Шаблон:In lang Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:Hauffenia_sp._nov.&oldid=15164386