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Pectinariidae

provided by wikipedia EN

Pectinariidae, or the trumpet worms or ice cream cone worms, are a family of marine polychaete worms that build tubes using grains of sand roughly resembling ice cream cones or trumpets. These structures can be up to 5 centimetres (2 in) long. The earliest pectinariid fossils are known from the Cretaceous.[1]

Ecology

Pectinariids are sessile burrowing tube dwellers, which can be found in fine-grained sediment. They position the wider end of their tube downwards, and use their stout golden setae for digging while they use tentacles for sorting the particles which they ingest. Half of the particles which the worm digs through are excreted as pseudofaeces.[2]

Genera

The systematics of the pectinariids have been the subject of some debate. Previously, only two genera have been recognized,[3] but three subgenera have been elevated to full genera by some scholars.[4][5]

  • Amphictene Savigny, 1818 - sometimes included as subgenera in Pectinaria
  • Cistenides Malmgren, 1866 - sometimes included as subgenera in Pectinaria
  • Lagis Malmgren, 1866 - sometimes included as subgenera in Pectinaria
  • Pectinaria Savigny, 1818
  • Petta Malmgren, 1866

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Pectinariidae: Brief Summary

provided by wikipedia EN

Pectinariidae, or the trumpet worms or ice cream cone worms, are a family of marine polychaete worms that build tubes using grains of sand roughly resembling ice cream cones or trumpets. These structures can be up to 5 centimetres (2 in) long. The earliest pectinariid fossils are known from the Cretaceous.

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Identification

provided by World Register of Marine Species
: Key to genera, modified from Hutchings & Peart (2002): 1 Cephalic veil cirrate. Scaphe distinctly separated from abdomen ................... 2 1. Cephalic veil smooth. Scaphe indistinctly separated from abdomen ............. Petta 2. Dorsal opercular rim smooth ................................................................................. 3 2. Dorsal opercular rim cirrate .................................................................................... Amphictene 3 Cephalic veil free. 13 biramous chaetigers ........................................................ 4 3. Cephalic veil laterally attached. 12 biramous chaetigers ................................. Lagis 4 Major teeth of uncini in 1 row ................................................................................... Cistenides 4. Major teeth of uncini in 2 rows................................................................................. Pectinaria
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bibliographic citation
Zhang, Jinghuai; Hutchings, Pat; Kupriyanova, Elena. (2019). A revision of the genus <em>Petta</em> Malmgren, 1866 (Annelida: Pectinariidae), with two new species from deep waters of southeastern Australia, and comments on phylogeny of the family. <em>Zootaxa.</em> 4614(2): 303-330. Hutchings, Patricia A.; Peart, Rachael. (2002). A Review of the genera of Pectinariidae (Polychaeta) together with a description of the Australian Fauna. <em>Records of the Australian Museum,.</em> 54(1): 99-127.
Contributor
Read, Geoffrey, G.B.