Samiksha Jaiswal (Editor)

Cephalopyge trematoides

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Covid-19
Kingdom  Animalia
Class  Gastropoda
Clade  Euthyneura
Rank  Species
Phylum  Mollusca
Clade  Heterobranchia
Clade  Nudipleura
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Cephalopyge trematoides is a pelagic species of nudibranch. A free-swimming marine gastropod in the family Phylliroidae. Cephalopyge trematoides is the only known species in its genus (i.e. the genus is monotypic).

Contents

Etymology

Cephalopyge is a contraction of cephalus (Greek: Κέφαλος Kephalos, "head") and pyge (πῦγή, "behind") referring to the position of the anus close to the head. The species epithet trematoides expresses a likeness to flukes.

Description

C. trematoides grows to 2.5 cm in length. It swims at approximately 12 cm/s, by passing several undulatory waves down its body each second. It is flattened and transparent; its internal organs are visible.

Pelagic nudibranchs

Of the approximately 3000 species of nudibranch, the vast majority are benthic, only a couple are neustonic, and C. trematoides is very unusual in that it is pelagic. It is estimated to be one of only five planktonic nudibranch species (another epipelagic example is Phylliroe bucephala).

Further information (including photos):

  • Nudibranch Encyclopedia Kousuke Chibi (in Japanese)
  • Seaslugs of Hawai'i by Cory Pittman and Pauline Fiene
  • References

    Cephalopyge trematoides Wikipedia


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