Careoradula perelegans | |
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apertural view of a shell | |
umbilical view of a shell | |
Conservation status | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
(unranked): | clade Heterobranchia
clade Euthyneura |
Superfamily: | Streptaxoidea |
Family: | Streptaxidae |
Subfamily: | Streptaxinae |
Genus: | Careoradula Gerlach & van Bruggen, 1999[2] |
Species: | C. perelegans |
Binomial name | |
Careoradula perelegans (Martens, 1898)[3] |
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Synonyms[2] | |
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Careoradula perelegans is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Streptaxidae.[4][2]
Careoradula perelegans is the only species in the genus Careoradula.[2]
The generic name Careoradula consist of Latin word "careo", that means "lacking" and the word radula.[2]
Contents |
Careoradula perelegans is endemic to the Seychelles.[4][2]
The shape of the shell is discoidal.[2] The shell has 6-8 whorls.[2] there are regular ribs on the shell.[2] The umbilicus is open.[2]
The width of the shell is 4.4-6.1 mm.[2] The height of the shell is 1.9-3.1 mm.[2]
The body color is pale yellow.[2]
Digestive system: Careoradula perelegans is unique among other streptaxids, because it has no radula, no odontophore and no retractor muscles associated with these structures.[2][5] It is the first known terrestrial mollusc and fist pulmonate gastropod without radula.[5] Instead of this, the Careoradula perelegans has strong muscular ridges between mouth and oesophagus.[5]
Careoradula perelegans feeds on carions.[5] It has been recorded to feed on dead snail Subulina octona.[5] It evert an extensive rostrum,[5] that is that is available in all carnivorous gastropods on the anterior part of the oesophagus,[5] and it uses only muscular peristaltics instead of rasping by radula.[5]