Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help
|Researched by||Sonia Rowley||Refereed by||Admin|
|Other common names||-||Synonyms||Sagartia coccinea Gosse 1858, Phellia picta Gosse 1858., Sagartiogeton laceratus (Dalyell, 1848)|
Cylista lacerata is a small slender species up to 6 cm tall on expansion. The pillar-like column is wrinkled on contraction, smooth on expansion and flares out to the perfectly circular disc which has a diameter of up to 3 cm. The long graceful tentacles number up to 200 in total and are arranged irregularilly within 4-5 cycles. Each tentacle tapers to a fine point, are transluscent pale grey and possess 3 diffuse or white bands at the base, middle and tip (Manuel, 1988). At the base of each tentacle runs a pale v-shaped stripe, standing out from the brighter, darker orange markings of the disc. The column is a pale orange colour becoming pale buff-grey at the expanded base. The column also possess 12 cream verticle stripes, and numerous small dark spots (cinclides) in an irregular ring arrangement towards the distal end, just bellow the margin. A loose covering of mucus and sediment may also be present at the lower part of the column. There are no suckers present on this species.
The taxonomy of the family Sagartiidae was recently examined by Sanamyan & Sanamyan (2020) who concluded that the genus Sagartia was not valid and should be assigned to the genus Cylista. Cylista lacerata reproduces asexually by constant pedal laceration (hence its name). A part of the base is lacerated to form a new individual, thus explaining the irregular shape of the base and irregular arrangement of tentacles and cinclides. The acontia (long stinging threads) are less readilly emitted from the cinclides than in other Sagartiid species. Cylista lacerata may be mistaken with Sagartiogeton undulatus, the former being smaller in size, brighter in colour with irregular, untidy tentacles that have no dark line running down them. Cylista lacerata can tolerate salinities up to 53.84 ppm (Stephenson, 1935).
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This review can be cited as:
Last Updated: 13/08/2007