Polyeunoa

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Polyeunoa
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Annelida
Class: Polychaeta
Order: Phyllodocida
Family: Polynoidae
Genus: Polyeunoa
McIntosh, 1885
Type species
Polyeunoa laevis McIntosh, 1885 [1]

Polyeunoa is a genus of marine annelids in the family Polynoidae (scale worms). The genus contains two species, one from the Indian Ocean and the other widespread in the south-west Atlantic ocean and the Southern Ocean.

Contents

Description

Species of Polyeunoa are long-bodied with 70 or more segments and at least 15 pairs of elytra. The elytra leave part of the mid-dorsal body and most posterior segments uncovered. Cephalic peaks are absent or very small on the prostomium and the lateral antennae are inserted beneath the median antenna. The notochaetae are few and about as thick as the neurochaetae, which are numerous. Both unidentate and bidentate forms of chaetae are present. [2] [3]


Species

The following species of Polyeunoa are recognised as of September 2020: [1]

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Antipathipolyeunoa is a genus of marine annelids in the family Polynoidae. The genus contains a single species, Antipathipolyeunoa nuttingi, found in the Caribbean Sea at a depth of 91 metres.

Austropolaria is a genus of marine annelids in the family Polynoidae. The genus includes a single species, Austropolaria magnicirrata, which is known only from the Amundsen Sea in the Southern Ocean, at depths of 1000 to 1500m.

Parahololepidella is a genus of marine annelids in the family Polynoidae. The genus contains a single species, Parahololepidella greeffi, This species is known from the east equatorial Atlantic Ocean and Cape Verde Islands at a maximum depth of 30m.

Polyeunoa laevis is a scale worm which is widely distributed in the Southern Ocean and occurs over a wide depth range, from 35m to 2450m.

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Hermadion is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Hermadion contains a single species, Hermadion magalhaensi which is known from the South Atlantic, South Pacific and southern Indian Oceans at depths to about 110 m.

Hermadionella is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Hermadionella contains 3 species which are known from the north-west Pacific and Arctic Oceans from the intertidal to depths of about 200 m.

Neopolynoe antarctica is a scale worm known from the Magallanes Region of the South Atlantic Ocean and from the Southern Ocean south of New Zealand at depths to about 200 m.

Subadyte is a genus of marine polychaete worms belonging to the family Polynoidae, the scaleworms. Eight species of Subadyte are recognised and the genus is known to occur widely in the world's oceans from the intertidal zone to depths of about 1200 m.

Subadyte pellucida is a scale worm widely reported from the Indian, Pacific and North Atlantic Oceans from the intertidal zone to depths of about 800 m.

References

  1. 1 2 Read, G.; Fauchald, K. (Ed.) (2020). World Polychaeta database. Polyeunoa McIntosh, 1885. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=174389
  2. McIntosh, William C. [as M'Intosh]. (1885). Report on the Annelida Polychaeta collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology. 12 (part 34): i-xxxvi, 1-554, pl. 1-55, 1A-39A, & Annelida stations map., available online at https://biodiversitylibrary.org/page/50688426
  3. Barnich R, Gambi C, Fiege D (2012) Revision of the genus Polyeunoa McIntosh, 1885 (Polychaeta, Polynoidae). Zootaxa 3523: 25–38. https://doi.org/10.11646/zootaxa.3523.1.3