Reddish gloss snail
| Reddish gloss snail | ||||||||||||
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Reddish gloss snail ( Aegopinella nitidula ) |
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| Aegopinella nitidula | ||||||||||||
| ( Draparnaud , 1805) |
The reddish gloss snail ( Aegopinella nitidula ) is a species of land living snail belonging to the family of the gloss snail (Oxychilidae).
features
The right -hand winding housing is low-conical with 3½ to 4½ turns. It is 6 to 11 mm wide and 4 to 6 mm high. The turns are moderately arched and increase regularly. Only the last quarter of the end turn widens a little towards the mouth, but does not sink. The seam is very clear. The mouth plane is inclined to the winding axis. The mouth opening is slightly flattened-elliptical in a direct view, apart from the indentation caused by the previous turn. The mouth edge is straight and pointed. The navel is wide and slightly eccentric.
The casing is yellowish-brown to mostly reddish-brown (name!) And translucent. Whitish housings are also rare. But around the navel the casing is always milky-whitish. The surface shows fine growth strips that intersect with fine spiral lines.
The soft body is blue-gray with a lighter sole and blue-black upper tentacles. In the hermaphroditic genitalia, the penis is comparatively small, as is the epiphallus. The ratio is about 2: 1. The penile retractor muscle attaches to the penile loop, near the transition to the epiphallus. The free fallopian tube and vagina are quite long.
Similar species
The last quarter of the end turn widens towards the mouth only slightly and not as much as in the misunderstood gloss snail ( Aegopinella epipedostoma ) and the wide- mouthed gloss snail ( Aegopinella nitens ). The reddish gloss snail differs from these two species by the reddish-brown housing color and the faint spiral stripes. However, these are less clear than in the small glossy snail ( Aegopinella pura ). The latter species is also much smaller (in the adult stage) and coiled up more tightly. There are also differences in the sexual apparatus. In the misunderstood gloss snail ( Aegopinella epipedostoma ) and the warmth-loving gloss snail ( Aegopinella minor ), the penile retractor muscle attaches almost centrally to the epiphallus. In the wide- mouthed gloss snail ( Aegopinella nitens ), the penis retractor muscle also attaches to the penis loop at the transition to the epiphallus, but the penis is much thicker and has a constriction below the middle.
Geographical distribution and habitat
The distribution area extends over the British Isles , France , Belgium , the Netherlands , northern and western Germany , western and northwestern Poland , the Czech Republic , Belarus , Ukraine and southern Scandinavia as well as northern Spain . The occurrence in the Azores is due to anthropogenic displacement. In Norway there are individual synanthropic occurrences up to 65 "N.
The species prefers moderately moist locations in the leaf litter of deciduous and coniferous forests and rows of hedges as well as in herbaceous stands , in gardens, roadsides, between rocks, on and in walls. It tolerates anthropogenically influenced habitats.
Way of life
The animals mostly feed predatory on small worms and other smaller snails, including carrion such as dead snails and insects. For reproduction, several clutches with around six to nine eggs are hidden in the moss and in the damp leaf litter. The eggs are 1.1 to 1.4 mm in diameter. The young are almost colorless and have a housing 1.3 to 1.4 mm wide.
Taxonomy
The taxon was introduced into scientific literature in 1805 by Jacques Philippe Raymond Draparnaud in the original combination Helix nitidula . It is generally accepted to be placed in the genus Aegopinella Lindholm, 1927.
Danger
The IUCN has assessed the species as not endangered across its entire range. The species is not considered endangered in Germany either.
literature
- Klaus Bogon: Land snails biology, ecology, biotope protection. 404 p., Natur Verlag, Augsburg 1990, ISBN 3-89440-002-1 , p. 198/99.
- Michael P. Kerney, RAD Cameron, Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 pp., Paul Parey, Hamburg & Berlin 1983, ISBN 3-490-17918-8 , pp. 114/15
- Adolf Riedel: About the Aegopinella species (Gastropoda, Zonitidae) from Yugoslavia, Italy and France. Annales Zoologici, 37 (5): 235-258, 1983 PDF
Individual evidence
- ↑ Jürgen H. Jungbluth and Dietrich von Knorre: Trivial names of land and freshwater mollusks in Germany (Gastropoda et Bivalvia). Mollusca, 26 (1): 105-156, Dresden 2008, ISSN 1864-5127 , p. 123.
- ^ A b 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 (p. 398)
- ^ Jacques Philippe Raymond Draparnaud: Histoire naturelle des mollusques terrestres et fluviatiles de la France. Ouvrage posthumous. Avec XIII planches. Pp. I-VIII (= 1-8), 1-134, Plassan, Renaud, Paris & Montpellier, 1805 Online at Biodiversity Heritage Library , p. 117. Plate 8, Fig. 21,22
- ↑ AnimalBase: Aegopinella nitidula (Draparnaud, 1805)
- ↑ Fauna Europaea: Aegopinella nitidula (Draparnaud, 1805)
- ↑ MolluscaBase: Aegopinella nitidula (Draparnaud, 1805)
- ↑ The IUCN Red List of Threatened Species: Aegopinella nitidula (Draparnaud, 1805)
- ^ Vollrath Wiese: The land snails of Germany. 352 pp., Quelle & Meyer, Wiebelsheim 2014, ISBN 978-3-494-01551-4 (p. 175)