Edged leaf snail

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Edged leaf snail
Edged leaf snail (Hygromia cinctella)

Edged leaf snail ( Hygromia cinctella )

Systematics
Superfamily : Helicoidea
Family : Tree slugs (Hygromiidae)
Subfamily : Hygromiinae
Tribe : Hygromiini
Genre : Hygromia
Type : Edged leaf snail
Scientific name
Hygromia cinctella
( Draparnaud , 1801)
View of the periphery of the case with the characteristic white keel
View of the bottom of the case

The edged leaf snail ( Hygromia cinctella ) is a species of snail from the family of leaf snails (Hygromiidae) in the order of land snails (Stylommatophora).

features

The adult case measures 6 to 7 mm in height and 10 to 12 mm in width. It is high-conical in shape, and there are 5 to 6 whorls with very shallow seams that increase regularly. The whorls are canted on the periphery, the top is slightly curved, as is the bottom. The last turn falls sharply off the turn axis just before the mouth. The navel is very narrow and almost closed by a spindle fold. The mouth is inclined to the growth axis of the turn and is clearly elliptical in cross section. It is flattened at the top and bottom. The edge of the mouth is thin and fragile, not thickened, and only slightly turned over in the spindle area. The housing is somewhat variable in the design of the keel.

The whitish-grayish to horn-colored case is slightly translucent with a narrow white band on the keel. The surface is fine and regularly striped. In Sicily there are a larger number of color variants, ranging from greenish and yellowish to reddish. There are seldom multiple bands at the periphery.

The soft body of the animal is light gray, often with a yellowish tone. The head and the tentacles are usually a little darker gray or brownish in color. The animals move very slowly.

Love arrows (from Koene & Schulenburg, 2005)

Similar species

The characteristic feature of the species is the whitish keel, which is otherwise not found in other leaf snail species.

Geographical distribution and habitat

The original distribution area was probably limited to Italy and neighboring regions, Slovenia, Croatia, southern France and southern Switzerland. The species has now been introduced to other regions. It is now found in almost all of France, in southern England, Wales, Ireland, Austria, the Czech Republic, Hungary, Bulgaria, Russia and also in (almost all of) Germany (western federal states, Mecklenburg-Western Pomerania, Saxony), Belgium and the Netherlands, mostly in anthropogenically influenced habitats. The species has now also been found in New Zealand. Contrary to the statements of some authors, the angular leaf snail does not occur in Spain.

The species mostly lives in open habitats in the herb and shrub layer, such as rows of hedges and orchards. It is rarely found in forests. In Switzerland it was found almost exclusively in cultivated land up to about 900 m above sea level. In Italy it prefers cooler and humid habitats in valleys and on river banks. In England it was more likely to be found in grass, nettle nests and on umbellifers at roadsides, also under / in stone walls and in gardens.

Distribution in Europe (according to Welter-Schultes, 2012)

Spread in Europe

The original distribution area was probably limited to Italy and neighboring regions, Slovenia, Croatia, southern France and southern Switzerland.

It was first found in Hungary in the 1930s. It was first detected in north-west France in the 1940s and in Cornwall in the 1950s. In England the species has now spread to around London. The first records in Germany and the Netherlands come from the 1990s.

Original illustration in Gualtieri, 1742: plate 2, Fig. A, syntyp

Taxonomy

The species was first described by Jacques Philippe Raymond Draparnaud as Helix cinctella . He referred to an illustration by Niccolò Gualtieri, which thus belongs to the syntypes of the species. But it is not the Hol type, as Draparnaud himself had copies available that he used for the description. Helix cinctella is the type species of the genus Hygromia Risso, 1826. The genus and species are generally recognized.

Danger

The species is not endangered in Germany. The species is also not endangered across its entire range.

literature

  • Rosina Fechter, Gerhard Falkner: Mollusks. 287 pp., Mosaik-Verlag, Munich 1990 (Steinbach's Nature Guide 10) ISBN 3-570-03414-3 (p. 212)
  • Michael P. Kerney, Robert AD Cameron & Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 p., Paul Parey, Hamburg & Berlin 1983 ISBN 3-490-17918-8 (p. 258/59)
  • Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 S., 679 S., Q1-Q78 S., Göttingen, Planet Poster Ed., 2012 ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5 (hereinafter abbreviated as Welter-Schultes , Identification book with corresponding page number)
  • Vollrath Wiese: Germany's land snails. 352 S., Quelle & Meyer, Wiebelsheim 2014 ISBN 978-3-494-01551-4 (in the following abbreviated meadow, land snails with corresponding page number)

Individual evidence

  1. ↑ Joris M. Koene and Hinrich Schulenburg: Shooting darts: co-evolution and counter-adaptation in hermaphroditic snails. - BMC Evolutionary Biology, 5:25, 13 pages, 2005 doi : 10.1186 / 1471-2148-5-25
  2. ↑ Dagmar Říhová & Lucie JuŘičková: The Girdled Snail Hygromia cinctella (Draparnaud, 1801) new to the Czech Republic. Malacologica Bohemoslovaca, 10: 35-37, 2011 ISSN 1336-6939 PDF
  3. ↑ Ivailo K. Dedov, Ulrich E. Schneppat, Fabia Knechtle Glogger: Hygromia cinctella (Draparnaud, 1801) (Mollusca: Gastropoda: Hygromiidae), a New Snail species for the fauna of Bulgaria. Acta zool. Bulg., 67 (4) ,: 465–469, 2015 PDF (ResearchGate)
  4. ^ SV Leonov: PDF
  5. ^ Karl-Heinz Beckmann, H. Kobialka: Hygromia cinctella (Draparnaud 1801) on the conquest of Germany (Gastropoda: Hygromiidae). Club Conchylia Informations, 39 (1/2): 34–41, Ludwigsburg 2008.
  6. ↑ Marco T. Neiber, Andreas Haack: Evidence of the introduced edged leaf snail, Hygromia cinctella (Draparnaud 1801), in Hamburg with a brief overview of the spread of the species in Germany. Communications from the German Malacoological Society, 100: 43–45, Frankfurt a. M., 2019 PDF
  7. ^ Elisabeth Möltgen-Goldmann: Hygromia cinctella (DRAPARNAUD 1801) now also in Saxony. Communications of the German Malacoological Society, 93: 1–4, Frankfurt a. M., 2015
  8. ↑ Kevin Scheers: The recent colonization and rapid spread in Belgium of the alien Girdled Snail Hygromiacinctella (Gastropoda: Hygromiidae). Journal of Conchology, 41 (6): 779-760, 2014 PDF
  9. ↑ K. Walton: Hygromia cinctella (Draparnaud, 1801) (Mollusca: Gastropoda: Hygromiidae): a new adventitious country snail for New Zealand. New Zealand Journal of Zoology, 44 (1): 2017 article
  10. ↑ Carlos E. Prieto, Ana I. Puente: El género Hygromia Risso, 1826 en la Península Ibérica, con descripción de Hygromia gofasi sp. nov., y consideraciones sobre la interpretación funcional del aparato estimulador de Hygromiidae. Bulletin du Muséum National d'Histoire naturelle, 4e série, Section A, 14 (2): 383-404, 1992 PDF
  11. ↑ a b Welter-Schultes, Identification Book, p. 544.
  12. ↑ Hygromia cinctella (Draparnaud, 1801)
  13. ^ Jacques Philippe Raymond Draparnaud: Tableau des mollusques terrestres et fluviatiles de la France. Renaud; Bossange, Masson & Besson, Montpellier, Paris 1801, p. 87. Online at Biodiversity Heritage Library
  14. ↑ Niccolò Gualtieri: Index testarvm conchyliorvm quae adservantvr in mvseo Nicolai Gvaltieri ...: et methodice distribvtae exhibentvr tabvlis cx. Florentiae / Florenz, Ex typographia Caietani Albizzini, 1742 Online at Biodiversity Heritage Library , plate 2, Fig.A.
  15. ↑ MolluscaBase: Hygromia cinctella (Draparnaud, 1801)
  16. ^ Wiese, Landschnecken, p. 280.
  17. ↑ IUCN Red List: Urticicola umbrosus

Web links

Commons : Hygromia cinctella  - collection of images, videos and audio files