Zebrina

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Zebrina
March snail (Zebrina detrita)

March snail ( Zebrina detrita )

Systematics
Subordination : Land snails (Stylommatophora)
Superfamily : Enoidea
Family : Wolverine snails (Enidae)
Subfamily : Eninae
Tribe : Chondrulini
Genre : Zebrina
Scientific name
Zebrina
HELD , 1838

Zebrina is a genus of the family of wolverines (Enidae) from the suborder of land snails (Stylommatophora).

features

The elongated egg-shaped cases are 12 to 30 mm high and 7 to 12 mm wide. They have six to seven turns, which are moderately convex at the periphery. The last turn does not rise towards the mouth. The mouth is crooked U-shaped. The mouth edge is bent outward at the spindle edge and at the base. It is not thickened and runs sharply. The mouth has neither teeth / lamellae nor a parietal callus. The housing is whitish with light to dark brown stripes. The surface of the embryonic convolutions is smooth, the surface of the postembryonic convolutions is ornamented with faint radial folds and spiral dimples.

In the male tract of the sexual apparatus, a short, conical flagellum is formed at the entrance of the vas deferens into the epiphallus. A short conical blind sac (epiphallus caecum) has developed very close to the flagellum, but opposite. The epiphallus is about as long as the penis, but less than half the diameter. Internally, the inner walls are covered with small conical tubercles. The stimulator is cone-shaped with a longitudinal furrow or with two opposing longitudinal furrows. The penile appendix branches off very close to the confluence of the penis with the atrium. This has a very thick lower part, a short, much thinner part, a very thin middle part and an elongated club-shaped end part. The retractor muscle divides into two strands, one of which attaches to the penis, between the middle and transition epiphallus / penis, the other near the end of the lower thick part of the penile appendix. The free fallopian tube is about twice as long as the vagina. The spermatheque is comparatively very short, the bladder comes to rest at the lower end of the prostate. A long, thin diverticulum branches off from the stalk of the spermathec.

Geographical distribution

The distribution area of ​​the genus extends from southern and southeastern France through southern Germany and the Czech Republic to Hungary, Bulgaria, western Ukraine, Turkey and the Middle East. In the north it extends to the south of England, in Germany the northern border is roughly at the level of the Harz Mountains.

Taxonomy

The taxon was set up by Friedrich Held in 1838 . As a German trivial name, he gives zebraschnecke for Zebrina . He assigned four species to the new genus: Bulimus fasciolatus Oliver, 1801, Bulimus dealbatus Say, 1821 (now Rabdotus dealbatus ), Bulimus radiatus Bruguière, 1789 ( synonym of Zebrina detrita ) and Bulimus illibatus Ziegler in Rossmässler, 1835 (synonym of Brephulopsis cylindrica ). The type species was Bulimus fasciolatus Oliver, established in 1801 by August Nicolaus Herrmannsen , other researchers name, following John Edward Gray , Helix detrita Müller, 1774 as type species. The genus Zebrina has been severely narrowed in the years after 2000.

supporting documents

literature

  • Anatolij A. Schileyko: Treatise on Recent Terrestrial Pulmonate Molluscs. Part 2. Gastrocoptidae, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachnodidae, Enidae, Sagdidae. Ruthenica, Supplement 2 (2): 129-261, Moscow 1998, ISSN  0136-0027
  • Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 p., 679 p., Q1-Q78 p., Planet Poster Ed., Göttingen 2012, ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5 (p. 132)

Individual evidence

  1. ^ Friedrich Held: Notes on the molluscs of Bavaria. (Continuation.). Isis 1837 (12): 902-919, Leipzig 1838 Online at www.biodiversitylibrary.org (p. 917).
  2. ↑ August Nikolaus Herrmannsen: Indicis generum malacozoorum primordia. Nomina subgenerum, generum, familiarum, tribuum, ordinum, classium; adjectis auctoribus, temporibus, locis systematicis atque literariis, etymis, synonymis. Praetermittuntur Cirripedia, Tunicata et Rhizopoda. Vol. II. S. XXVIII-XLII, 1-717, 1-140 (Supplementa et Corrigenda), Kassel, Fischer 1847-1849. Online at www.biodiversitylibrary.org (p. 714)
  3. ↑ Animalbase: Genus taxon summary for Zebrina (version 6)
  4. ↑ Burçin Aşkım Gümüş & Eike Neubert New taxa of terrestrial molluscs from Turkey (Gastropoda, Pristilomatidae, Enidae, Hygromiidae, Helicidae). Zookeys. 2012; (171): 17-37. doi : 10.3897 / zookeys.171.2273

Web link

Commons : Zebrina  - collection of images, videos and audio files