Careoradula
Species of gastropod
From Wikipedia, the free encyclopedia
Careoradula perelegans is a species of air-breathing land snail, terrestrial pulmonate gastropod mollusk in the family Streptaxidae.[2][4]
| Careoradula | |
|---|---|
| |
| apertural view of a shell | |
 | |
| Umbilical view of a shell | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Streptaxidae |
| Subfamily: | Orthogibbinae |
| Genus: | Careoradula Gerlach & van Bruggen, 1999[2] |
| Species: | C. perelegans |
| Binomial name | |
| Careoradula perelegans | |
| Synonyms[2] | |
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Careoradula perelegans is the only species in the genus Careoradula.[2][5]
The generic name Careoradula consist of Latin word "careo", that means "lacking" and the word radula.[2]
Distribution
Careoradula perelegans is endemic to the Seychelles.[2][4]
Description
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][6] It is the first known terrestrial mollusc and first pulmonate gastropod without radula.[6] Instead of this, the Careoradula perelegans has strong muscular ridges between mouth and oesophagus.[6]
Ecology
Careoradula perelegans feeds on carrion.[6] It has been recorded to feed on dead snail Subulina octona.[6] It evert an extensive rostrum,[6] that is available in all carnivorous gastropods on the anterior part of the oesophagus,[6] and it uses only muscular peristaltics instead of rasping by radula.[6]