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Syllidae
Family of annelids From Wikipedia, the free encyclopedia
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Syllidae, commonly known as the necklace worms,[2] is a family of small to medium-sized polychaete worms. Syllids are distinguished from other polychaetes by the presence of a muscular region of the anterior digestive tract known as the proventricle.[3][4]

Syllid worms range in size from 2–3 mm (0.08–0.12 in) to 14 centimetres (5.5 in). Most syllids are benthic organisms that transition to a pelagic epitoke for reproduction. They are found in all regions of the ocean, from the intertidal zone to the deep sea, and are especially abundant in shallow water.[3][5]
They are found in a range of habitats, moving actively on rock and sandy substrates, hiding in crevices and among seaweeds, and climbing on sponges, corals, hydrozoans, seagrasses and mangroves. They are generalist feeders.[6] A young Syllid was one of the first worms to be found with pollen from seagrass in its stomach, making it a possible pollinator.[7]
The proventricle, Syllid worm's most distinctive anatomical feature, allows the worm to feed by sucking due to its pumping action. It also plays a role in hormone production, and thus the worm's sexual development.[4] The proventricle is composed of strirated muscle cells with the longest known sacromeres among animals.[8] The proventricle is usually visible through the body wall.[9]
Syllis ramosa was the first polychaete discovered to have a branching body plan.[10] Later, two species of Ramisyllis were discovered to have a branching body plan.
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Subfamilies
- Anoplosyllinae
- Streptosyllis
- Streptosyllis bidentata (Southern, 1914)
 - Streptosyllis websteri (Southern, 1914)
 
 - Syllides
- Syllides benedicti (Banse, 1971)
 - Syllides longocirrata (Ørsted, 1845)
 
 
 - Streptosyllis
 - Eusyllinae
- Eusyllis
- Eusyllis assimilis (Marenzeller, 1875)
 - Eusyllis blomstrandi (Malmgren, 1867)
 - Eusyllis lamelligera (Marion & Bobretzky, 1875)
 
 - Nudisyllis
- Nudisyllis divaricata (Keferstein, 1862)
 - Nudisyllis pulligera (Krohn, 1852)
 
 - Odontosyllis
- Odontosyllis ctenostoma (Claparède, 1868)
 - Odontosyllis enopla (Verrill, 1900)
 - Odontosyllis fulgurans (Audouin & Milne-Edwards, 1833)
 - Odontosyllis gibba (Claparède, 1863)
 - Odontosyllis phosphorea (Moore, 1909)
 
 - Opisthodonta
- Opisthodonta longocirrata (Saint-Joseph, 1886)
 
 - Pionosyllis
- Pionosyllis compacta (Malmgren, 1867)
 - Pionosyllis serratisetosa (López, San Martín & Jiménez, 1997)
 
 - Synmerosyllis
- Synmerosyllis lamelligera (Saint-Joseph, 1886)
 
 
 - Eusyllis
 - Autolytinae
- Epigamia
- Epigamia alexandri (Malmgren, 1867)
 
 - Myrianida
- Myrianida brachycephala (Marenzeller, 1874)
 - Myrianida edwarsi (Saint-Joseph, 1886)
 - Myrianida inermis (Saint-Joseph, 1886)
 - Myrianida langerhansi (Gidholm, 1967)
 - Myrianida pinnigera (Montagu, 1808)
 - Myrianida prolifera (O.F. Müller, 1788)
 - Myrianida quinquedecimdentata (Langerhans, 1884)
 - Myrianida rubropunctata (Grube, 1860)
 
 - Proceraea
- Proceraea aurantiaca (Claparède, 1868)
 - Proceraea cornuta (Agassiz, 1862)
 - Proceraea picta (Ehlers, 1864)
 - Proceraea prismatica (O.F. Müller, 1776)
 - Procerastea halleziana (Malaquin, 1893)
 - Procerastea nematodes (Langerhans, 1884)
 
 
 - Epigamia
 - Exogoninae
- Brania
- Brania pusilla (Dujardin, 1851)
 
 - Erinaceusyllis
- Erinaceusyllis cirripapillata (San Martín, 2005)
 - Erinaceusyllis erinaceus (Claparède, 1863)
 - Erinaceusyllis ettiennei (San Martín, 2005)
 - Erinaceusyllis hartmannschroederae (San Martín, 2005)
 - Erinaceusyllis kathrynae (San Martín, 2005)
 
 - Exogone
- Exogone dispar (Webster, 1879)
 - Exogone naidina (Ørsted, 1845)
 - Exogone verugera (Claparède, 1868)
 
 - Exogonita Hartman & Fauchald, 1971
 - Parapionosyllis Fauvel, 1923
 - Parexogone
- Parexogone longicirris (Webster & Benedict, 1887)
 - Parexogone hebes (Webster & Benedict, 1884)
 
 - Prosphaerosyllis
- Prosphaerosyllis tetralix (Eliason, 1920)
 
 - Salvatoria McIntosh, 1885
- Salvatoria clavata (Claparède, 1863)
 - Salvatoria limbata (Claparède, 1868)
 - Salvatoria swedmarki (Gidholm, 1962)
 
 - Sphaerosyllis
- Sphaerosyllis bardukaciculata (San Martín, 2005)
 - Sphaerosyllis bulbosa (Southern, 1914)
 - Sphaerosyllis goorabantennata (San Martín, 2005)
 - Sphaerosyllis georgeharrisoni (San Martín, 2005)
 - Sphaerosyllis hystrix (Claparède, 1863)
 - Sphaerosyllis levantina(Faulwetter et al., 2011)
 - Sphaerosyllis pirifera (Claparède, 1868)
 - Sphaerosyllis taylori (Perkins, 1980)
 - Sphaerosyllis voluntariorum (San Martín, 2005)
 
 
 - Brania
 - Syllinae
- Syllis
- Syllis aciculigrossa (San Martín, 1990)
 - Syllis adamantea (Treadwell, 1914)
 - Syllis albae (Álvarez-Campos & Verdes, 2017)
 - Syllis albanyensis (Hartmann-Schröder, 1984)
 - Syllis alosae (San Martín, 1992)
 - Syllis alternata (Moore, 1908)
 - Syllis amica (Quatrefages, 1866)
 - Syllis amicarmillaris (Simon, San Martín & Robinson, 2014)
 - Syllis anoculata (Hartmann-Schröder, 1962)
 - Syllis antoniae (Salcedo Oropeza, San Martín & Solís-Weiss, 2012)
 - Syllis armillaris (O.F. Müller, 1776)
 - Syllis augeneri (Haswell, 1920)
 - Syllis barbata (San Martín, 1992)
 - Syllis bella (Chamberlin, 1919)
 - Syllis beneliahuae (Campoy & Alquézar, 1982)
 - Syllis benguellana (Day, 1963)
 - Syllis boggemanni (San Martín, Álvarez-Campos & Hutchings, 2017)
 - Syllis botosaneanui (Hartmann-Schröder, 1973)
 - Syllis brasiliensis (McIntosh, 1885)
 - Syllis breviarticulata (Grube, 1857)
 - Syllis brevicirrata (McIntosh, 1908)
 - Syllis brevicirris (Hansen, 1882)
 - Syllis broomensis (Hartmann-Schröder, 1979)
 - Syllis caeca (Monro, 1933)
 - Syllis castroviejoi (Capa, San Martín & López, 2001)
 - Syllis cerina (Grube, 1878)
 - Syllis cirrita (Lee & Rho, 1994)
 - Syllis columbretensis (Campoy, 1982)
 - Syllis compacta (Gravier, 1900)
 - Syllis corallicola (Verrill, 1900)
 - Syllis cornuta (Rathke, 1843)
 - Syllis crassicirrata (Treadwell, 1925)
 - Syllis cruzi (Núñez & San Martín, 1991)
 - Syllis curticirris (Monro, 1937)
 - Syllis danieli (San Martín, 1992)
 - Syllis deleoni (Salcedo Oropeza, San Martín & Solís-Weiss, 2012)
 - Syllis edensis (Hartmann-Schröder, 1989)
 - Syllis elongata (Johnson, 1901)
 - Syllis ergeni (Çinar, 2005)
 - Syllis erikae (Hartmann-Schröder, 1981)
 - Syllis fasciata (Malmgren, 1867)
 - Syllis ferrani (Alós & San Martín, 1987)
 - Syllis filidentata (Hartmann-Schröder, 1962)
 - Syllis garciai (Campoy, 1982)
 - Syllis gerlachi (Hartmann-Schröder, 1960)
 - Syllis gerundensis (Alós & Campoy, 1981)
 - Syllis glandulata (Nogueira & San Martín, 2002)
 - Syllis glarearia (Westheide, 1974)
 - Syllis golfonovensis (Hartmann-Schröder, 1962)
 - Syllis gracilis (Grube, 1840)
 - Syllis guidae (Nogueira & Yunda-Guarin, 2008)
 - Syllis heterochaeta (Moore, 1909)
 - Syllis hyalina (Grube, 1863)
 - Syllis hyllebergi (Licher, 1999)
 - Syllis joaoi (San Martín, Álvarez-Campos & Hutchings, 2017)
 - Syllis jorgei (San Martín & López, 2000)
 - Syllis kabilica (Ben-Eliahu, 1977)
 - Syllis karlae (San Martín, Álvarez-Campos & Hutchings, 2017)
 - Syllis kas (Lucas, Sikorski & San Martín, 2018)
 - Syllis komodoensis (Aguado, San Martín & ten Hove, 2008)
 - Syllis krohnii (Ehlers, 1864)
 - Syllis lagunae (Tovar-Hernández, Hernández-Alcántara & Solís-Weiss, 2008)
 - Syllis latifrons (Grube, 1857)
 - Syllis licheri (Ravara, San Martín & Moreira, 2004)
 - Syllis limbata (Grube, 1880)
 - Syllis longesegmentata (Grube, 1857)
 - Syllis lunaris (Imajima, 1966)
 - Syllis lutea (Hartmann-Schröder, 1960)
 - Syllis luteoides (Hartmann-Schröder, 1962)
 - Syllis macroceras (Grube, 1857)
 - Syllis macrodentata (Hartmann-Schröder, 1982)
 - Syllis magdalena (Wesenberg-Lund, 1962)
 - Syllis magnapalpa (Hartmann-Schröder, 1965)
 - Syllis marceloi (San Martín, Álvarez-Campos & Hutchings, 2017)
 - Syllis marugani (Aguado, San Martín & Nishi, 2006)
 - Syllis maryae (San Martín, 1992)
 - Syllis mauretanica (Licher, 1999)
 - Syllis mayeri (Musco & Giangrande, 2005)
 - Syllis mercedesae (Lucas, San Martín & Parapar, 2012)
 - Syllis mexicana (Rioja, 1960)
 - Syllis microoculata (Hartmann-Schröder, 1965)
 - Syllis monilaris (Savigny in Lamarck, 1818)
 - Syllis mytilorum (Studer, 1889)
 - Syllis nigra (Augener, 1925)
 - Syllis nigrescens (Grube, 1878)
 - Syllis nigricirris (Grube, 1863)
 - Syllis nigriscens (Grube, 1878)
 - Syllis nigropunctata (Haswell, 1886)
 - Syllis notocera (Ehlers, 1905)
 - Syllis nuchalis (Hartmann-Schröder, 1960)
 - Syllis obscura (Grube, 1857)
 - Syllis onkylochaeta (Hartmann-Schröder, 1991)
 - Syllis ortizi (San Martín, 1992)
 - Syllis parapari (San Martín & López, 2000)
 - Syllis parturiens (Haswell, 1920)
 - Syllis pectinans (Haswell, 1920)
 - Syllis picta (Kinberg, 1866)
 - Syllis pigmentata (Chamberlin, 1919)
 - Syllis pilosa (Aguado, San Martín & Nishi, 2008)
 - Syllis pontxioi (San Martín & López, 2000)
 - Syllis profunda (Cognetti, 1955)
 - Syllis prolifera (Krohn, 1852)
 - Syllis prolixa (Ehlers, 1901)
 - Syllis pseudoarmillaris (Nogueira & San Martín, 2002)
 - Syllis pulvinata (Langerhans, 1881)
 - Syllis quadrifasciata (Fischli, 1900)
 - Syllis quaternaria (Moore, 1906)
 - Syllis ramosa (McIntosh, 1879)
 - Syllis riojai (San Martín, 1990)
 - Syllis robertianae (McIntosh, 1885)
 - Syllis rosea (Langerhans, 1879)
 - Syllis rubicunda (Aguado, San Martín & Nishi, 2008)
 - Syllis rudolphi (Delle Chiaje, 1841)
 - Syllis schulzi (Hartmann-Schröder, 1960)
 - Syllis sclerolaema (Ehlers, 1901)
 - Syllis setoensis (Imajima, 1966)
 - Syllis sol (San Martín, 2004)
 - Syllis stenura (Blanchard in Gay, 1849)
 - Syllis tamarae (Álvarez-Campos & Verdes, 2017)
 - Syllis tiedemanni (Delle Chiaje, 1841)
 - Syllis torquata (Marion & Bobretzky, 1875)
 - Syllis tripantu (Álvarez-Campos & Verdes, 2017)
 - Syllis truncata (Haswell, 1920)
 - Syllis tyrrhena (Licher & Kuper, 1998)
 - Syllis umbricolor (Grube, 1878)
 - Syllis unzima (Simon, San Martín & Robinson, 2014)
 - Syllis valida (Grube, 1857)
 - Syllis variegata (Grube, 1860)
 - Syllis villenai (Aguado, San Martín & ten Hove, 2008)
 - Syllis violacea (Grube, 1870)
 - Syllis vittata (Grube, 1840)
 - Syllis vivipara (Krohn, 1869)
 - Syllis warrnamboolensis (Hartmann-Schröder, 1987)
 - Syllis westheidei (San Martín, 1984)
 - Syllis yallingupensis (Hartmann-Schröder, 1982)
 - Syllis ypsiloides (Aguado, San Martín & ten Hove, 2008)
 
 - Ramisyllis
- Ramisyllis multicaudata (Glasby, Schroeder & Aguado, 2012)
 - Ramisyllis kingghidorahi (M. Teresa Aguado, et al. 2022)
 
 
 - Syllis
 
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References
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