Arionidae
Template:Short description Template:Automatic taxobox
Arionidae, common name the "roundback slugs" or "round back slugs" are a taxonomic family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the superfamily Arionoidea.
Distribution
The distribution of this family of slugs includes Nearctic, Palearctic and Oriental regions.[1]
Anatomy
Unlike some slugs, European Arionidae have no keel on the back.[1] The caudal mucous pit is above the tip of the tail.[1] The respiratory pore (pneumostome) is in front of the midpoint of the mantle.[1] The body length is up to 250 mm.[1] The mantle covers only a part of the body and lies in the anterior part.[1]
The jaw is odontognathic,[1] which means it is transversally ribbed. Radular teeth include: central tricuspid, lateral bi- or tricuspid, marginal bicuspid, all having broad bases.[1] Teeth are often accreted.[1] The digestive system forms 2 loops.[1] The heart, in relation to body axis, is titled to the left.[1] The kidney is circular (surrounding aorta).[1] Cephalic retractors tend to divide into separate branches attached independently to the posterior part of pallial complex.[1] The shell is strongly reduced in places, most often completely buried in the mantle, usually of loose crystals or plate-like.[1] Genitalia: the penis is present only in some species, epiphallus is present in nearly all of them.[1] Male copulatory organs are generally reduced, their role being taken over by a well-developed atrium and the epiphallus that produces spermatophores.[1]
In this family, the number of haploid chromosomes lies between 21 and 30 (according to the values in this table).[2]
Genera
Family Arionidae has no subfamilies according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.
The type genus of the family is Arion Férussac, 1819
Genera within the family Arionidae include:
- Anadenulus Cockerell, 1890[3]
- Arion Férussac, 1819
- Ariunculus Lessona, 1881
- Carinacauda Leonard, Chichester, Richart & Young, 2011[4]
- Geomalacus Allman, 1843
- Gliabates Webb, 1959[5]
- Hesperarion Simroth, 1891[6]
- Letourneuxia Bourguignat, 1866
- Magnipelta Pilsbry, 1953[7]
- Securicauda Leonard, Chichester, Richart & Young, 2011[4]
- Udosarx Webb, 1959[8]
- Zacoleus Pilsbry, 1903[9]
Parasites
The parasites of the Arionidae slugs include the Sciomyzidae.
References
This article incorporates public domain text from the reference.[1]
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- ↑ a b c d e f g h i j k l m n o p q "Family summary for Arionidae". AnimalBase, last change 12-06-2009, accessed 4 August 2010.
- ↑ 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, Template:ISBN. 1-146, cited pages: 139 and 142. (In the reference specified as Ariononae.)
- ↑ Cockerell (1890). Ann. Mag. nat. Hist. (6)6: 278.
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Webb (1959). Gastropodia 1(3): 22.
- ↑ Simroth (1891). Malak. Bl. (N.S.) 11: 111.
- ↑ Pilsbry H. A. (1953). Nautilus 67: 37.
- ↑ Webb (1959). Gastropodia 1: 22.
- ↑ Pilsbry H. A. (1903). Proc. Acad. nat. Sci. Philad. 55: 626.
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