Psychropotes Monstrosa
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''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative.


Description

As adults, species of ''Psychropotes'' are roughly cylindrical in shape and red to violet in colour. They have a sail-like appendage which can be used for swimming during the larval stage, but is no longer needed when it is fully grown. Larvae of ''Psychropotes'' species are
benthopelagic The demersal zone is the part of the sea or ocean (or deep lake) consisting of the part of the water column near to (and significantly affected by) the seabed and the benthos. The demersal zone is just above the benthic zone and forms a layer of ...
and swim around using the aforementioned appendage, however researchers are still trying to understand its use when the holothurian is fully grown. Larvae are transparent and can grow to around 2 cm long.


Species

The following species are recognised in the genus ''Psychropotes'': * '' Psychropotes belyaevi'' Hansen, 1975 * '' Psychropotes depressa'' (Théel, 1882) * '' Psychropotes dubiosa'' Ludwig, 1893 * '' Psychropotes dyscrita'' (Clark, 1920) * ''
Psychropotes fuscopurpurea ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...
'' Théel, 1882 * '' Psychropotes hyalinus'' Pawson, 1985 * '' Psychropotes longicauda'' Théel, 1882 * '' Psychropotes loveni'' Théel, 1882 * '' Psychropotes minuta'' (Koehler & Vaney, 1905) * ''
Psychropotes mirabilis ''Psychropotes'' is a genus of sea cucumbers in the family Psychropotidae. The members of this genus possess the ability to swim, although this is only facultative. Description As adults, species of ''Psychropotes'' are roughly cylindrical in sh ...
'' Hansen, 1975 * '' Psychropotes monstrosa'' Théel, 1882 * '' Psychropotes moskalevi'' Gebruk & Kremenetskaia in Gebruk et al., 2020 * '' Psychropotes pawsoni '' Gebruk & Kremenetskaia in Gebruk et al., 2020 * '' Psychropotes raripes'' Ludwig, 1893 * '' Psychropotes scotiae'' (Vaney, 1908) * '' Psychropotes semperiana'' Théel, 1882 * '' Psychropotes verrucicaudatus'' Xiao, Gong, Kou & Li, 2019 * '' Psychropotes verrucosa'' (Ludwig, 1894) * '' Psychropotes xenochromata'' Rogacheva & Billett, 2009


References

Holothuroidea genera Psychropotidae Taxa named by Johan Hjalmar Théel {{Holothuroidea-stub