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These land snails have opercula, which helps identify them as "winkles gone ashore", in other words, snails within the clade Littorinimorpha and the informal group Architaenioglossa. Members of the snail family Pulmonata , which includes carboniferous land sails and some freshwater snails of the order Basommatophora , are protandrous ...
Land slugs can be thought of as land snails that over evolutionary time have either lost the shell completely, have a very reduced external shell, or have retained only internal remnants of a shell. Land slugs are a highly polyphyletic group, which means that many land slug families are not at all closely related to one another.
This slug has been introduced to Florida and it has become an agricultural pest there. [ 5 ] Controversially Cowie et al. (2009) [ 7 ] considered this species has not yet become established in the US, but it is considered to represent a potentially serious threat as a pest , an invasive species which could negatively affect agriculture, natural ...
The Veronicellidae, also known by their common name the leatherleaf slugs, are a family of pulmonate terrestrial slugs. The herbivorous molluscs occur mainly in the tropical and subtropical areas of America, Asia and Africa. They act as intermediate hosts of the rat lung worm Angiostrongylus costaricensis, and act as a vector for other human ...
A leopard slug makes an appearance during plant removal at the Crawford County Fairgrounds. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290 ...
In the land slugs, the shell is reduced or absent, and the body is streamlined. Some gastropods have adult shells which are bottom heavy due to the presence of a thick, often broad, convex ventral callus deposit on the inner lip and adapical to the aperture which may be important for gravitational stability. [22]
Aug. 1—An unusually wet, cool summer has made Southcentral Alaska a particularly hospitable place for an invasive slug species that appears to have made a home in Anchorage's Hillside.
Being mostly or entirely without shells, most slugs have reduced mantles.) Pilsbry (1948) stated that "the enormously developed mantle , the large empty shell sac, and the insertions of the free retractor muscles along the margins of the foot cavity, instead of dorsally as in the Arionidae are special to the Philomycidae".