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Euparypha pisana (Müller)
Helix pisana, Theba pisana

Gastropoda, Geophila, Helicidae .

Vine snail, White garden snail

Description, Biology, Life Cycle, Damage, Common Names, Images


[R]Description
- Rather elongated snail, with a clear yellowish foot. The head is darker, with two dark spots on each side, corresponding to retractor muscles seen transparently. The upper cylindrical and very long tentacles end in the eye protuberances; the lower tentacles are short and cylindrical.
- The narrow and long foot ends in a sharp flattened point.
- The globulous, depressed shell has 5 to 6 ever increasing whorls. The colour and the ornamentation are very variable: all white-yellow with 5 dull parallel lines in the middle of the last whorl, 2 to 4 around the umbilicus and 1 to 2 along the suture. The peristoma is pinkish or whitish. Diameter: 23 mm; height: 13 mm (*) .

[R]Biology
- In Portugal, very common in the coastal areas of Alentejo, Algarve, Estremadura up to the latitude of Coimbra. A very common species in Southern Europe, as well as in the Atlantic coastal region of France, where it can be harmful to asparagus, artichoke, bean, lucerne, beet, vine.
- In unfavourable periods (mid-winter and mid-summer), they are grouped together in very large numbers on different supports: agaves (Agave), Graminaceae, vine, fruit and forest trees.

[R]Life Cycle
The laying of eggs takes place from June to October. The eggs, numbering some sixty, are laid on stones or at a shallow depth in the soil.

[R]Damage
The species is regularly harmful to vine in Portugal. In winter, vine snails congregate in dense colonies on the woody parts of the vinestocks. At the beginning of April during the start of vine growth they move to the green parts of the host, attacking young shoots, leaves and even the future bunches of grapes. This attack is short-lived (during the month following the emergence of vegetation) but it can be serious as it is very premature and target-concentrated.


[R]Common Names
DE: Mittelmmerweinbergschnecke ES: Cagot, Morguette, Luma FR: Cagot, Luma, Morguette IT: Lumaca PT: Caracol da vinha GB: Vine snail, White garden snail

[R] Images

  1. Euparypha pisana (Müller) (Coutin R. / OPIE)
    Adult

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