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Agriolimacidae
''Agriolimacidae'' is a family of small and medium-sized land slugs, or shell-less snails, terrestrial pulmonate gastropod mollusks. Distribution Distribution of Limacidae is Holarctic, this include: Nearctic, western Palearctic and eastern Palearctic. Agriolimacidae is the largest slug family, some are introduced all over the world, synanthropes are often severe pests. Anatomy Most slugs in the family Agriolimacidae are rather small; only a few (in the genera'' Mesolimax'' and '' Krynickillus'') are larger. Most are not more than 50 mm long. The mantle is usually large, occupying approximately 1/3 of the entire body length, situated in the anterior part of the body. The pneumostome is clearly postmedial. The surface of the mantle in living slugs is covered in concentric, mobile wrinkles. In addition sometimes there is a shallow, poorly defined groove which runs above the pneumostome on the right side, not passing to the left. The penis is short, usually bag-shaped ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deroceras
''Deroceras'' is a taxonomic genus of small to medium-sized air-breathing land slugs in the family Agriolimacidae. Description Most species reach only 30–35 mm in length (max 45 mm). Coloration varies considerably within and between species but common patterns are pale cream, with or without darker flecks (never stripes), and a more uniform light gray or brown to black-brown. Mucus is usually colourless but in some species includes a white deposit when the slug has been disturbed. No keel continues from the tail along the back. The mantle is large (up to half the body length), containing a shell plate internally. The pneumostome lies in the posterior half of the mantle. Generally external appearance does not reliably distinguish one species from certain others, so species identification requires dissection to reveal the genitalia, unless the local species diversity is known to be low. The taxonomy, anatomy and other aspects of the biology of this genus were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deroceras Praecox
''Deroceras praecox'' is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae. Taxonomy When Wiktor (1966) described ''D. praecox'' he distinguished two forms on the basis of their genitalia. Later Wiktor (1973) realised that one of the forms of ''D. praecox'' that he had distinguished was synonymous with ''Deroceras rodnae'', described slightly earlier by Grossu & Lupu (1965). But the other form with a spiral end to its penis occupied a distinct range in the Sudeten mountains and neighboring areas; this is what is called ''D. praecox'' nowadays. It remains debatable whether ''D. praecox'' might be better viewed as a subspecies of ''D. rodnae'' ( Hutchinson & Reise, 2009). Note that the distinct differences in mating behaviour between ''D. praecox'' and ''D. rodnae'' that Reise (1995) reported turn out to refer to differences between ''D. praecox'' and a more distant species, ''Deroceras juranum'' ( Hutchinson & Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deroceras Reticulatum
''Deroceras reticulatum'', common names the "grey field slug", "grey garden slug", and "milky slug", is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusc in the family Agriolimacidae. This species is an important agricultural pest. Distribution ''Deroceras reticulatum'' is native to Europe, North Africa and the Atlantic Islands.Horsák M., Juřičková L. & Picka J. (2013). ''Měkkýši České a Slovenské republiky. Molluscs of the Czech and Slovak Republics''. Kabourek, Zlín, 264 pp. (in Czech and English). It occurs widely in Europe, but is more rare and restricted to cultivated fields in the southeast, particularly in the Balkans, and is probably absent from Greece and the Bulgarian mountains. In the north and central European lowlands, Great Britain, and Ireland, it is probably the most widely occurring slug. In northern Scandinavia it is scarce, and is mainly found as a synanthrope. This species occurs in countries and islands incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
