Philomycidae: Difference between revisions
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| name = Philomycidae |
| name = Philomycidae |
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| image = PhCarolinianus1.jpg |
| image = PhCarolinianus1.jpg |
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| image_caption = ''[[Philomycus carolinianus]]'' from W. G. Binney, 1878<ref>Binney, William G. (1878). The Terrestrial Air-Breathing Mollusks of the United States and Adjacent Territories of North America. Vol. 5 (plates). Bull. Mus. Comparative Zool., Harvard. Plate 63.</ref> |
| image_caption = ''[[Philomycus carolinianus]]'' from W. G. Binney, 1878<ref>Binney, William G. (1878). The Terrestrial Air-Breathing Mollusks of the United States and Adjacent Territories of North America. Vol. 5 (plates). Bull. Mus. Comparative Zool., Harvard. Plate 63.</ref> |
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| regnum = [[Animal]]ia |
| regnum = [[Animal]]ia |
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* ''[[Pallifera]]'' |
* ''[[Pallifera]]'' |
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* ''[[Philomycus]]'' |
* ''[[Philomycus]]'' |
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==References== |
==References== |
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{{reflist}} |
{{reflist}} |
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[[Category:Gastropod families]] |
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[[Category:Philomycidae| ]] |
[[Category:Philomycidae| ]] |
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Revision as of 20:22, 19 January 2009
| Philomycidae | |
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| Philomycus carolinianus from W. G. Binney, 1878[1] | |
| Scientific classification | |
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| Family: | Philomycidae
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See text. | |
The Philomycidae are a family of air-breathing land slugs (snails without shells or with only shell remnants). They are terrestrial pulmonate gastropod mollusks in the superfamily Arionoidea.
Distribution
Slugs in this family are found in China, Japan, the East Indies, central and eastern North America, and through Central America into northern South America.
Anatomy
Members of this family most obviously differ from related slugs in that their mantles are broadly rounded, and very large, covering the entire body. (In mollusks, the mantle consists of the tissues that normally generate the shell. Being mostly or entirely without shells, most slugs have reduced mantles.)
Pilsbry (1948) states 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.[2]
A further anatomical oddity of the group, shared with certain helicid and zonitid snails, is their creating and use of calcareous love darts during mating.[3][2]
In this family, the number of haploid chromosomes varies from 21 to 30 (according to the values in this table).[4]
Genera within the family Philomycidae
References
- ^ Binney, William G. (1878). The Terrestrial Air-Breathing Mollusks of the United States and Adjacent Territories of North America. Vol. 5 (plates). Bull. Mus. Comparative Zool., Harvard. Plate 63.
- ^ a b Pilsbry, Henry A. 1948. Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 2(2): 748-750.
- ^ http://snailstales.blogspot.com/2005/04/dissection-selection-philomycus.html "Snail's Tales" blog of Aydin Örstan
- ^ Barker G. M.: Gastropods on Land: Phylogeny, Diversity and Adaptive Morphology. in Barker G. M. (ed.): The biology of terrestrial molluscs. CABI Publishing, Oxon, UK, 2001, ISBN 0-85199-318-4. 1-146, cited pages: 139 and 142.