A Review of the Molluscs collected on field trips to VC65 between 2009 and 2013

摘要

These trips occurred in July 2009, August 2011, July 2012 and July 2013, the trip in 2010 being in association with the NFBR conference held in Windermere. An examination of these records suggest that many species are very local and hard to locate with eleven of them being recorded only once during the four years: Point Snail Acicula fusca, Southern Garden SugArion hortensis s.s., Euconulus alderi, Lapidary Snail Helicigona lapicida, Yellow Slug Limacus flavus, Glossy Glass Snail Oxychilus navarricus helveticus, Keeled Slug Tandonia sowerbyi, Pfeiffer's Amber Snail Oxyloma elegans, Marsh Whorl Snail Vertigo antivertigo and Wall Whorl Snail V. pusilla. A further four were recorded only twice: Prickly Snail Acanthinula aculeata, Irish Yellow Slug Limacus maculatus, Draparnaud's Glass Snail Oxychilus draparnaudi and Ash-black Slug, although the latter may consist of more than one species. Three-toothed Moss Snail and Durham Slug Arion flagellus were only recorded three times each; Clear Glass Snail Aegopinella pura, Wrinkled Snail Candidula intersecta and Striated Whorl Snail Vertigo substriata on four occasions; Large Amber Snail Succinea putris and Eccentric Grass Snail Vallonia excentrica on five occasions; Budapest Slug Tandonia budapestensis, Toothless Chrysalis Snail Columella edentula and Common Whorl Snail Vertigo pygmaea on six occasions and Short-toothed Herald Snail Carychium minimum and Dwarf Snail Punctum pygmaeum on seven occasions.