Cephalopyge

Species of gastropod From Wikipedia, the free encyclopedia

Cephalopyge is a genus of pelagic nudibranchs comprising the single species Cephalopyge trematoides, a free-swimming marine gastropod in the family Phylliroidae.[1]

Phylum:Mollusca
Class:Gastropoda
Order:Nudibranchia
Suborder:Dendronotacea
Quick facts Scientific classification, Binomial name ...
Cephalopyge
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Nudibranchia
Suborder: Dendronotacea
Family: Phylliroidae
Genus: Cephalopyge
Hanel, 1905
Species:
C. trematoides
Binomial name
Cephalopyge trematoides
(Chun, 1889)
Synonyms[1][2]

Genus synonymy

  • Bonneviia Pruvot-Fol, 1929
  • Boopsis Pierantoni, 1923
  • Ctilopsis André, 1906
  • Dactylopus Bonnevie, 1921
  • Nectophyllirhoe Hoffmann, 1922

Species synonymy

  • Boopsis mediterranea Pierantoni, 1923
  • Ctilopsis picteti André, 1906
  • Dactylopus michaelsarsii Bonnevie, 1921
  • Phylliroe trematoides Chun, 1889
  • Cephalopyge arabica [3]
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Etymology

Cephalopyge is a contraction of cephalus (Greek: κεφαλή kephale, "head") and pyge (πūγή, "behind") referring to the position of the anus close to the head. The species epithet trematoides expresses a likeness to flukes.[3]

Description

Cephalopyge trematoides grows to 2.5 cm (0.98 in) in length. It swims at approximately 12 cm/s (4.7 in/s), by passing several undulatory waves down its body each second.[4] It is flattened and transparent; its internal organs are visible.[5]

Pelagic nudibranchs

Of the approximately 3000 species of nudibranch, the vast majority are benthic, only a couple are neustonic, and Cephalopyge trematoides is very unusual in that it is pelagic.[6][7] It is estimated to be one of only five planktonic nudibranch species (another epipelagic example is Phylliroe bucephala).[8]

Further information (including photos):

References

External links

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