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{{Short description|Species of gastropod}}
{{Taxobox
{{Speciesbox
| image = Lucilla singleyana shell.jpg
| image = Lucilla singleyana shell.jpg
| image_caption = shells of ''Lucilla singleyana''
| image_caption = Five [[gastropod shell|shells]] of ''Lucilla singleyana'', scale bar is in mm
| status = NE
| genus = Lucilla
⚫
| species = singleyana
| status_ref = <ref>2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Cited 28 May 2007.</ref>
⚫
| authority = ([[Henry Augustus Pilsbry|Pilsbry]], 1889)<ref name="Pilsbry">[[Henry Augustus Pilsbry|Pilsbry H. A.]] 14 May 1889. ''New and little known American mollusks, no. I.'' [https://archive.org/details/proceedingsofaca41acad Proceedings of the Academy of Natural Sciences of Philadelphia 41]: [https://archive.org/stream/proceedingsofaca41acad#page/81/mode/1up 81]-89, pl. 3. Description is at [https://archive.org/stream/proceedingsofaca41acad#page/84/mode/1up page 84].</ref>
| regnum = [[Animal]]ia
| phylum = [[Mollusca]]
| classis = [[Gastropoda]]
| ordo =
| familia = [[Punctidae]]
| genus = ''[[Lucilla (genus)|Lucilla]]''
⚫
| species = '''''L. singleyana'''''
| binomial = ''Lucilla singleyana''
⚫
| binomial_authority = ([[Henry Augustus Pilsbry|Pilsbry]], 1889)<ref name="Pilsbry">[[Henry Augustus Pilsbry|Pilsbry H. A.]] 14 May 1889. ''New and little known American mollusks, no. I.'' [http://www.archive.org/details/proceedingsofaca41acad Proceedings of the Academy of Natural Sciences of Philadelphia 41]: [http://www.archive.org/stream/proceedingsofaca41acad#page/81/mode/1up 81]-89, pl. 3. Description is at [http://www.archive.org/stream/proceedingsofaca41acad#page/84/mode/1up page 84].</ref>
| synonyms =
| synonyms =
⚫
* ''Zonites singleyanus'' Pilsbry, 1889
* ''Helicodiscus'' (''Hebetodiscus'') ''singleyanus inermis'' <small>H. B. Baker, 1929</small>
* ''Helicodiscus'' (''Hebetodiscus'') ''singleyanus inermis'' <small>H. B. Baker, 1929</small>
* ''Helicodiscus singleyanus'' <small>(Pilsbry, 1890)</small>
* ''Hyalinia laeviuscula'' <small>Sterki, 1892</small>
* ''Hyalinia texana'' <small>Sterki, 1892</small> (nomen nudum)
* ''Laoma (Phrixgnathus) academia'' <small>Climo, 1970</small>
⚫
* ''Zonites singleyanus'' Pilsbry, 1889
}}
}}


'''''Lucilla singleyana''''' is a [[species]] of minute air-breathing land [[snail]], a [[Terrestrial animal|terrestrial]] [[pulmonate]] [[gastropod]] [[mollusk]] or [[micromollusk]] in the family [[Punctidae]], the dot snails.
'''''Lucilla singleyana''''' is a [[species]] of minute air-breathing [[land snail]], a [[terrestrial mollusc|terrestrial]] [[pulmonate]] [[gastropod]] [[mollusc]] or [[micromollusk]] in the family [[Helicodiscidae]].<ref name="Horsák 2010">{{in lang|cs}} 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. [http://mollusca.sav.sk/pdf/9/Suppl-1-v2.pdf PDF].</ref><ref name="WoRMS">MolluscaBase eds. (2021). MolluscaBase. Lucilla singleyana (Pilsbry, 1889). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=820004 on 2021-05-16</ref>


The [[gastropod shell|shell]] of this species is about 2 mm in width.
The [[gastropod shell|shell]] of this species is about 2&nbsp;mm in width.


== Original description ==
== Original description ==
''Lucilla singleyana'' was originally discovered and described (under the name ''Zonites singleyanus'') by [[Henry Augustus Pilsbry]] in 1889<ref name="Pilsbry"/>.
''Lucilla singleyana'' was originally discovered and described (under the name ''Zonites singleyanus'') by [[Henry Augustus Pilsbry]] in 1889.<ref name="Pilsbry"/>


Pilsbry's original text (the [[type description]]) reads as follows:
Pilsbry's original text (the [[Species description|type description]]) reads as follows:


{{Cquote|
{{Cquote|
Zonites singleyanus Pilsbry. Proc. A. N. S. Philada., 1888, PI. xvii, figs. m,m,m.
Zonites singleyanus Pilsbry. Proc. A. N. S. Philada., 1888, PI. xvii, figs. m,m,m.


[[gastropod shell|Shell]] minute, broadly umbilicate, planorboid, the [[spire (mollusc)|spire]] scarcely
[[gastropod shell|Shell]] minute, broadly umbilicate, planorboid, the [[spire (mollusc)|spire]] scarcely
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[[whorl (mollusc)|whorls]] three, rather rapidly increasing, separated by well-impressed
[[whorl (mollusc)|whorls]] three, rather rapidly increasing, separated by well-impressed
[[suture (gastropod)|sutures]], convex, the [[apex (mollusc)|apex]] rather large; [[body whorl|body-whorl]] depressed,
[[suture (gastropod)|sutures]], convex, the [[apex (mollusc)|apex]] rather large; [[body whorl|body-whorl]] depressed,
slightly descending, indented below around the [[umbilicus]]; [[aperture (mollusc)|aperture]]
slightly descending, indented below around the [[Umbilicus (mollusc)|umbilicus]]; [[aperture (mollusc)|aperture]]
small, semilunar, oblique; peristome simple, acute. Umbilicus nearly
small, semilunar, oblique; peristome simple, acute. Umbilicus nearly
one-third the diameter of the shell, wide, showing all the whorls.
one-third the diameter of the shell, wide, showing all the whorls.


Alt. 1, diam. 2 mill.
Alt. 1, diam. 2 mill.
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Allied to ''[[Hawaiia minuscula|Z. minusculus]]'', but much more depressed, more shining,
Allied to ''[[Hawaiia minuscula|Z. minusculus]]'', but much more depressed, more shining,
smoother, smaller, with broader umbilicus and a complete whorl
smoother, smaller, with broader umbilicus and a complete whorl
less than ''minusculus''.
less than ''minusculus''.


This species, one of the most 'distinct of the smaller forms of
This species, one of the most 'distinct of the smaller forms of
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1885-'86. With ''Z. singleyanus'' at New Braunfels are found
1885-'86. With ''Z. singleyanus'' at New Braunfels are found
quantities of ''Z. minusculus''. The latter species exhibits some variation, being often more depressed than most northern specimen. This
quantities of ''Z. minusculus''. The latter species exhibits some variation, being often more depressed than most northern specimen. This
depressed form has been noticed in [[Mexico]] by [[Strebel]],* who proposes for ''Z. minusculus'' the new generic title of ''[[Chanomphalus]]'', which
depressed form has been noticed in [[Mexico]] by [[Hermann Strebel (malacologist)|Strebel]],* who proposes for ''Z. minusculus'' the new generic title of ''[[Chanomphalus]]'', which
of course is completely synonymous with ''[[Pseudohyalina]]'' Morse,
of course is completely synonymous with ''[[Pseudohyalina]]'' Morse,
1864, and this again is not different enough from ''Hyalina'' to warrant
1864, and this again is not different enough from ''Hyalina'' to warrant
Line 72: Line 69:


Then non-indigenous distribution areas include:
Then non-indigenous distribution areas include:
* [[France]]
* [[List of non-marine molluscs of Great Britain|Great Britain]]
* [[List of non-marine molluscs of Great Britain|Great Britain]]
* [[List of non-marine molluscs of Poland|Poland]]
* [[List of non-marine molluscs of Poland|Poland]]
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| last = Čejka
| last = Čejka
| first = Tomáš
| first = Tomáš
| coauthors =
| volume = 55
| volume = 55
| issue =
| issue =
| month =
| year = 2000
| year = 2000
| doi =
| doi =
| url =
| url =
⚫
}}
| language = English
⚫
</ref><ref name="Horsak">Horsák M., Šteffek J., Čejka T., Ložek V. & Juřičková L. (2009). [http://mollusca.sav.sk/pdf/8/8.Horsak.pdf "Occurrence of ''Lucilla scintilla'' (R.T. Lowe, 1852) and ''Lucilla singleyana'' (Pilsbry, 1890) in the Czech and Slovak Republics – with remarks how to distinguish these two non-native minute snails"]. ''Malacologica Bohemoslovaca'' '''8''': 24-27. Online serial at <http://mollusca.sav.sk> 18-June-2009.</ref>
| accessdate=
* [[List of non-marine molluscs of Ukraine|Ukraine]]<ref name=" Balashov">Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. ''Journal of Conchology''. 41 (1): 91-109.</ref>
⚫
}}
⚫
</ref><ref name="Horsak">Horsák M., Šteffek J., Čejka T., Ložek V. & Juřičková L. 2009. [http://mollusca.sav.sk/pdf/8/8.Horsak.pdf ''Occurrence of Lucilla scintilla (R.T. Lowe, 1852) and Lucilla singleyana (Pilsbry, 1890) in the Czech and Slovak Republics – with remarks how to distinguish these two non-native minute snails'']. Malacologica Bohemoslovaca, 8: 24-27. Online serial at <http://mollusca.sav.sk> 18-June-2009.</ref>


This species was previously announced from the Czech Republic since 1988, but later in 2009 was all findings recognized as ''[[Lucilla scintilla]]''.<ref name="Horsak"/>
This species was previously announced from the Czech Republic since 1988, but later in 2009 was all findings recognized as ''[[Lucilla scintilla]]''.<ref name="Horsak"/>

This species has been introduced to [[New Zealand]].<ref>[http://www.molluscs.otago.ac.nz Spencer H.G., Willan R.C., Marshall B.A. & Murray T.J. (2011). ''Checklist of the Recent Mollusca Recorded from the New Zealand Exclusive Economic Zone'']</ref>


==Ecology==
==Ecology==
Line 99: Line 96:


==References==
==References==
{{Commons category}}
This article incorporates public domain text from reference <ref name="Pilsbry"/>.
This article incorporates public domain text from the reference.<ref name="Pilsbry"/>

{{reflist}}
{{Reflist}}

⚫
[[Category:Punctidae]]


{{Taxonbar|from=Q6697252}}


⚫
[[Category:Helicodiscidae]]
{{stylommatophora-stub}}
[[Category:Gastropods described in 1889]]

Latest revision as of 01:03, 7 April 2024

Lucilla singleyana
Five shells of Lucilla singleyana, scale bar is in mm
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Helicodiscidae
Genus: Lucilla
Species:
L. singleyana
Binomial name
Lucilla singleyana
(Pilsbry, 1889)[1]
Synonyms
  • Helicodiscus (Hebetodiscus) singleyanus inermis H. B. Baker, 1929
  • Helicodiscus singleyanus (Pilsbry, 1890)
  • Hyalinia laeviuscula Sterki, 1892
  • Hyalinia texana Sterki, 1892 (nomen nudum)
  • Laoma (Phrixgnathus) academia Climo, 1970
  • Zonites singleyanus Pilsbry, 1889

Lucilla singleyana is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusk in the family Helicodiscidae.[2][3]

The shell of this species is about 2 mm in width.

Original description

[edit]

Lucilla singleyana was originally discovered and described (under the name Zonites singleyanus) by Henry Augustus Pilsbry in 1889.[1]

Pilsbry's original text (the type description) reads as follows:

Zonites singleyanus Pilsbry. Proc. A. N. S. Philada., 1888, PI. xvii, figs. m,m,m.

Shell minute, broadly umbilicate, planorboid, the spire scarcely perceptibly exserted; subtranslucent, waxen white, shining, smooth, under a strong lens seen to be slightly wrinkled by growth-lines; whorls three, rather rapidly increasing, separated by well-impressed sutures, convex, the apex rather large; body-whorl depressed, slightly descending, indented below around the umbilicus; aperture small, semilunar, oblique; peristome simple, acute. Umbilicus nearly one-third the diameter of the shell, wide, showing all the whorls.

Alt. 1, diam. 2 mill.

New Braunfels, Comal Co., Texas.

Allied to Z. minusculus, but much more depressed, more shining, smoother, smaller, with broader umbilicus and a complete whorl less than minusculus.

This species, one of the most 'distinct of the smaller forms of Hyalina, was communicated to me by Mr. J. A. Singley, in whose honor it is named. I have also found a few specimens among the shells collected by myself in central Texas, during the winter of 1885-'86. With Z. singleyanus at New Braunfels are found quantities of Z. minusculus. The latter species exhibits some variation, being often more depressed than most northern specimen. This depressed form has been noticed in Mexico by Strebel,* who proposes for Z. minusculus the new generic title of Chanomphalus, which of course is completely synonymous with Pseudohyalina Morse, 1864, and this again is not different enough from Hyalina to warrant the erection of a new genus or sub-genus. There is some variation in the width of the umbilicus in Texan specimens of Z. minusculus, but I have not seen specimens with it so wide as Dr. Dall indicates for his var. alachuana, from Florida. H elegantulus Pfr. is about the size and form of my Zonites singleyanus, but it is a strongly sculptured species.

* Vide Beitrag zur Kenntniss der Fauna mexikanischer Land und Süsswasser

Conchylien, Theil iv, p. 19, pi. iv, fig. 10. (1880.)

Distribution

[edit]

This species is Holarctic in distribution.

The indigenous distribution for this species includes North America.

Then non-indigenous distribution areas include:

This species was previously announced from the Czech Republic since 1988, but later in 2009 was all findings recognized as Lucilla scintilla.[5]

This species has been introduced to New Zealand.[7]

Ecology

[edit]

This species lives in soil, see soil-inhabitant. Technically this is known as being a terricol species.

References

[edit]
Wikimedia Commons has media related to Lucilla singleyana.

This article incorporates public domain text from the reference.[1]

  1. ^ a b c Pilsbry H. A. 14 May 1889. New and little known American mollusks, no. I. Proceedings of the Academy of Natural Sciences of Philadelphia 41: 81-89, pl. 3. Description is at page 84.
  2. ^ (in Czech) 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.
  3. ^ MolluscaBase eds. (2021). MolluscaBase. Lucilla singleyana (Pilsbry, 1889). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=820004 on 2021-05-16
  4. ^ Čejka, Tomáš (2000). "First record of the land snail Helicodiscus (Hebetodiscus) singleyanus inermis H. B. Baker, 1929 (Gastropoda, Punctidae) in Slovakia". Biologia, Bratislava. 55: 475–476.
  5. ^ a b Horsák M., Šteffek J., Čejka T., Ložek V. & Juřičková L. (2009). "Occurrence of Lucilla scintilla (R.T. Lowe, 1852) and Lucilla singleyana (Pilsbry, 1890) in the Czech and Slovak Republics – with remarks how to distinguish these two non-native minute snails". Malacologica Bohemoslovaca 8: 24-27. Online serial at <http://mollusca.sav.sk> 18-June-2009.
  6. ^ Balashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109.
  7. ^ Spencer H.G., Willan R.C., Marshall B.A. & Murray T.J. (2011). Checklist of the Recent Mollusca Recorded from the New Zealand Exclusive Economic Zone
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