Semi-slugs, also spelled semislugs, are land gastropods whose shells are too small for them to retract into, but not quite vestigial.[1] The shell of some semi-slugs may not be easily visible on casual inspection, because the shell may be covered over with the mantle.
This is a type of gastropod that is intermediate between a slug (without an external shell) and a land snail (with a large enough shell to retract completely into).
There exist a number of gastropod families that have semi-slugs species.[2] There exist about 1,000 species of semi-slugs in comparison to about only 500 species of slugs.[1]
Examplesedit
Semi-slugs have a worldwide distribution and have evolved in several families; genera include:
^ abBurton D. W. (1982). "How to be sluggish". Tuatara25(2): 48-63. HTM.
^ abcdeBreure A. S. H. (2010). "The rediscovery of a semi-slug: Coloniconcha prima Pilsbry, 1933 (Gastropoda, Pleurodontidae) from Hispaniola". Basteria74(4-6): 78-86.
^Giusti, F.; Fiorentino, V.; Benocci, A.; Manganelli, G. (2011). "A Survey of Vitrinid Land Snails (Gastropoda: Pulmonata: Limacoidea)". Malacologia. 53 (2): 279–363. doi:10.4002/040.053.0206. ISSN 0076-2997. S2CID 86724021.
April 17, 2024
semi, slug, also, spelled, semislugs, land, gastropods, whose, shells, small, them, retract, into, quite, vestigial, shell, some, semi, slugs, easily, visible, casual, inspection, because, shell, covered, over, with, mantle, side, view, cryptella, canariensis,. Semi slugs also spelled semislugs are land gastropods whose shells are too small for them to retract into but not quite vestigial 1 The shell of some semi slugs may not be easily visible on casual inspection because the shell may be covered over with the mantle Side and top view of a Cryptella canariensis from the Canary IslandsShell of Cryptella canariensisAn unidentified semi slug from UgandaThis is a type of gastropod that is intermediate between a slug without an external shell and a land snail with a large enough shell to retract completely into There exist a number of gastropod families that have semi slugs species 2 There exist about 1 000 species of semi slugs in comparison to about only 500 species of slugs 1 Examples editSemi slugs have a worldwide distribution and have evolved in several families genera include Palearctic and Nearctic family Parmacellidae Cryptella family Vitrinidae Eucobresia Semilimax Vitrina Vitrinobrachium 3 Asia Pacific family Ariophantidae Parmarion Ratnadvipia Varadia family Helicarionidae Attenborougharion Helicarion Howearion Ibycus Parmellops Ubiquitarion Semi slugs also exist but are exceptional in the Camaenidae 2 Neotropics family Amphibulimidae Amphibulima Gaeotis 2 family Xanthonychidae Cryptostrakon Semiconchula Xanthonyx 2 family Pleurodontidae Coloniconcha prima 2 Tropical Africa family Urocyclidae Gymnarion citation needed See also edit Leatherleaf slugs VeronicellidaeReferences edit a b Burton D W 1982 How to be sluggish Tuatara 25 2 48 63 HTM a b c d e Breure A S H 2010 The rediscovery of a semi slug Coloniconcha prima Pilsbry 1933 Gastropoda Pleurodontidae from Hispaniola Basteria 74 4 6 78 86 Giusti F Fiorentino V Benocci A Manganelli G 2011 A Survey of Vitrinid Land Snails Gastropoda Pulmonata Limacoidea Malacologia 53 2 279 363 doi 10 4002 040 053 0206 ISSN 0076 2997 S2CID 86724021 Retrieved from https en wikipedia org w index php title Semi slug amp oldid 1194180121, wikipedia, wiki, book, books, library,
