Pilargidae is a family of polychaetes. These marine worms are cylindrical, somewhat flattened, and can be ribbon-like. They can be found free-living on sediment, or shallowly in sediment. Some species within the genera Hermundura and Litocorsa are known to burrow, having reduced heads and parapodia. Two species are known to be commensal with other polychaetes. Pilargis berkeleyae will live in the tubes of Chaetopteridae, and Ancistrosyllis commensalis will live in Capitellidae burrows. Pilargid worms are almost all exclusively predators, classified as carnivoreomnivores. They are similar in appearance to Hesionidae, with a peristomium often with two pairs of tentacular cirri (with 1 pair or 0 in some species), reduced or absent notopodia, and a lack of pharyngeal jaws. The first few segments bearing setigers are also somewhat fused. They can have 0 to 3 antennae, and palps. These polychaetes are rarely the most abundant polychaete.[1][2]
Some genera have been redescribed under a new genus, which some consider junior synonyms of existing genera. Parandalia tricuspis is a redescription of Hermundura tricuspis, which provided more reliable characteristics for identification.[3]
Referencesedit
^Pettibone, Marian (1966). "Revision of the Pilargidae (Annelida: Polychaeta), Including descriptions of new species, and redescriptions of the pelagic Podarmus ploa Chamberlin (Polynoidae)". Proceedings of the United States National Museum. 118 (3525): 155–207. doi:10.5479/si.00963801.118-3525.155. Retrieved 28 March 2014.
^Pamela L. Beesley; Graham J. B. Ross, & Christopher J. Glasby (2000). Polychaetes & Allies: The Southern Synthesis. Fauna of Australia. Vol. 4A Polychaeta, Myzostomida, Pogonophora, Echiura, Sipuncula. Melbourne, Australia: CSIRO Publishing. pp. 148–150. ISBN0-643-06571-7. Retrieved 28 March 2014.
^Salazar-Vallejo, Sergio; Reyes-Barragan, Ma. del Pilar (1990). "Parandalia vivianneae n. sp. and P. tricuspis (Muller), two estuarine polychaetes (Polychaeta: Pilargidae) from Eastern Mexico". Revisita de Biologia Tropical. 38 (1): 87–90.
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pilargidae, family, polychaetes, these, marine, worms, cylindrical, somewhat, flattened, ribbon, like, they, found, free, living, sediment, shallowly, sediment, some, species, within, genera, hermundura, litocorsa, known, burrow, having, reduced, heads, parapo. Pilargidae is a family of polychaetes These marine worms are cylindrical somewhat flattened and can be ribbon like They can be found free living on sediment or shallowly in sediment Some species within the genera Hermundura and Litocorsa are known to burrow having reduced heads and parapodia Two species are known to be commensal with other polychaetes Pilargis berkeleyae will live in the tubes of Chaetopteridae and Ancistrosyllis commensalis will live in Capitellidae burrows Pilargid worms are almost all exclusively predators classified as carnivore omnivores They are similar in appearance to Hesionidae with a peristomium often with two pairs of tentacular cirri with 1 pair or 0 in some species reduced or absent notopodia and a lack of pharyngeal jaws The first few segments bearing setigers are also somewhat fused They can have 0 to 3 antennae and palps These polychaetes are rarely the most abundant polychaete 1 2 PilargidaeA Synelmis Pilargid wormScientific classificationDomain EukaryotaKingdom AnimaliaPhylum AnnelidaClade PleistoannelidaSubclass ErrantiaOrder PhyllodocidaSuborder NereidiformiaFamily PilargidaeGeneraCabira Glyphohesione Hermundura Otopsis Ancistrosyllis Harpochaeta Phronia Pilargis Sigambra Pseudexogone Sigatargis Kynephorus Litocorsa Synelmis ParandaliaContested genera editSome genera have been redescribed under a new genus which some consider junior synonyms of existing genera Parandalia tricuspis is a redescription of Hermundura tricuspis which provided more reliable characteristics for identification 3 References edit Pettibone Marian 1966 Revision of the Pilargidae Annelida Polychaeta Including descriptions of new species and redescriptions of the pelagic Podarmus ploa Chamberlin Polynoidae Proceedings of the United States National Museum 118 3525 155 207 doi 10 5479 si 00963801 118 3525 155 Retrieved 28 March 2014 Pamela L Beesley Graham J B Ross amp Christopher J Glasby 2000 Polychaetes amp Allies The Southern Synthesis Fauna of Australia Vol 4A Polychaeta Myzostomida Pogonophora Echiura Sipuncula Melbourne Australia CSIRO Publishing pp 148 150 ISBN 0 643 06571 7 Retrieved 28 March 2014 Salazar Vallejo Sergio Reyes Barragan Ma del Pilar 1990 Parandalia vivianneae n sp and P tricuspis Muller two estuarine polychaetes Polychaeta Pilargidae from Eastern Mexico Revisita de Biologia Tropical 38 1 87 90 External links edit nbsp Wikispecies has information related to Pilargidae nbsp Wikimedia Commons has media related to Pilargidae nbsp This annelid related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Pilargidae amp oldid 1180034745, wikipedia, wiki, book, books, library,
