Round-mouthed snail

The round-mouthed snail (Pomatias elegans) is a terrestrial gastropod mollusc belonging to the Pomatiasidae family. While typically found in woodland habitats rich in calcium carbonate, it can become a nuisance in private gardens where it feeds on organic debris and occasionally attacks living plant tissues.

Taxonomically, this species is classified within the Littorinimorpha order. A distinctive feature of this snail is its operculum, a hard lid that seals the shell opening, providing the mollusc with superior protection against desiccation during dry spells compared to other garden slugs and snails.

This pest is known to cause damage by consuming seedlings, young shoots, and foliage of various vegetable and ornamental plants. Their feeding habits leave irregular holes in leaves, which can lead to stunted growth and weaken the plant, making it more susceptible to secondary diseases and environmental stress.

The biological cycle of Pomatias elegans is heavily dependent on soil moisture and calcium availability. They prefer moist, chalky environments where they can easily deposit eggs in the soil. Their slow movement and reliance on specific microclimates mean that infestations are often localized but can be persistent over several years.

Effective management strategies include soil cultivation to disturb their nesting sites and reducing surface moisture. Keeping the garden free of debris and ground cover like wet leaves is essential. For direct control, physical barriers such as copper tape or crushed shells can deter them, while molluscicides should be used as a last resort.