WoRMS taxon details
Parexogone Mesnil & Caullery, 1918
325961 (urn:lsid:marinespecies.org:taxname:325961)
accepted
Genus
Paedophylax hebes Webster & Benedict, 1884 accepted as Parexogone hebes (Webster & Benedict, 1884) (type by monotypy)
Exogone (Parexogone) Mesnil & Caullery, 1918 · alternative representation (rank upgrade to genus)
Exogonella Hartman, 1961 · unaccepted (subjective synonym)
- Species Parexogone acutipalpa (Kudenov & Harris, 1995)
- Species Parexogone annamurrayae (San Martín, 2005)
- Species Parexogone anseforbansensis Böggemann & Westheide, 2004
- Species Parexogone breviseta (Kudenov & Harris, 1995)
- Species Parexogone brunnea (Hartman, 1961)
- Species Parexogone campoyi (San Martín, Ceberio & Aguirrezabalaga, 1996)
- Species Parexogone canyonincolae (Sardá, Gil, Taboada & Gili, 2009)
- Species Parexogone caribensis (San Martín, 1991)
- Species Parexogone cognettii (Castelli, Badalamenti & Lardicci, 1987)
- Species Parexogone convoluta (Campoy, 1982)
- Species Parexogone exmouthensis (Hartmann-Schröder, 1980)
- Species Parexogone hebes (Webster & Benedict, 1884)
- Species Parexogone javieri San Martín, Lucas & Westheide, 2021
- Species Parexogone lineata Ding & Westheide, 2008
- Species Parexogone longicirris (Webster & Benedict, 1887)
- Species Parexogone meridionalis (Cognetti, 1955)
- Species Parexogone minuscula (Hartman, 1953)
- Species Parexogone molesta (Banse, 1972)
- Species Parexogone parahebes (Hartmann-Schröder, 1965)
- Species Parexogone seychellensis Böggemann & Westheide, 2004
- Species Parexogone viejoi San Martín, Lucas & Westheide, 2021
- Species Parexogone wolfi (San Martín, 1991)
marine, brackish, fresh, terrestrial
recent only
(of Exogone (Parexogone) Mesnil & Caullery, 1918) Mesnil, F.; Caullery, M. (1918). Sur l'organisation et la biologie d'un Syllidien [Exogone (Parexogone, n. s. g.) hebes Webst. et Ben. var. hibernica South.] habitant un sable compact. <em>Bulletin de la Société Zoologique de France.</em> 42: 126-132., available online at http://www.biodiversitylibrary.org/part/29711#/summary [details]
Status Parexogone raised from subgenus to genus by Böggemann & Westheide (2004), because (p.433) of differences from Exogone in...
Status Parexogone raised from subgenus to genus by Böggemann & Westheide (2004), because (p.433) of differences from Exogone in heterogomph falcigers and supra-acicular simple chaetae plus "a different reproductive mode" (mode unstated but in Aguado et al (2008) stated that females carry progeny ventrally with some species viviparous.)
[details]
[details]
Read, G.; Fauchald, K. (Ed.) (2025). World Polychaeta Database. Parexogone Mesnil & Caullery, 1918. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=325961 on 2025-05-11
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Nomenclature
original description
(of Exogone (Parexogone) Mesnil & Caullery, 1918) Mesnil, F.; Caullery, M. (1918). Sur l'organisation et la biologie d'un Syllidien [Exogone (Parexogone, n. s. g.) hebes Webst. et Ben. var. hibernica South.] habitant un sable compact. <em>Bulletin de la Société Zoologique de France.</em> 42: 126-132., available online at http://www.biodiversitylibrary.org/part/29711#/summary [details]
original description (of Exogonella Hartman, 1961) Hartman, Olga. (1961). Polychaetous annelids from California. <em>Allan Hancock Pacific Expeditions.</em> 25: 1-226., available online at https://biodiversitylibrary.org/page/5214802
page(s): 74 [details]
original description (of Exogonella Hartman, 1961) Hartman, Olga. (1961). Polychaetous annelids from California. <em>Allan Hancock Pacific Expeditions.</em> 25: 1-226., available online at https://biodiversitylibrary.org/page/5214802
page(s): 74 [details]
Taxonomy
redescription
Aguado, M.T.; San Martín, G. (2008). Re-description of some enigmatic genera of Syllidae (Phyllodocida: Polychaeta). Journal of the Marine Biological Association of the United Kingdom. 88(01): 35-56., available online at http://dx.doi.org/10.1017/S002531540800026X
page(s): 51-52 [details]
status source Böggemann, Markus; Westheide, Wilfried. (2004). Interstitial Syllidae (Annelida: Polychaeta) from Mahé (Seychelles). <em>Journal of Natural History.</em> 38(4): 403-446., available online at https://doi.org/10.1080/0022293021000033229
page(s): 432 [raised to genus rank] [details] Available for editors
[request]
page(s): 51-52 [details]
status source Böggemann, Markus; Westheide, Wilfried. (2004). Interstitial Syllidae (Annelida: Polychaeta) from Mahé (Seychelles). <em>Journal of Natural History.</em> 38(4): 403-446., available online at https://doi.org/10.1080/0022293021000033229
page(s): 432 [raised to genus rank] [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis [ San Martin (2005) & Agudao & San Martin (2008) ] Body small, meiofaunal, surface smooth. Prostomium with three antennae; usually four eyes, sometimes also with two eye spots. Palps well developed, completely fused to each other or with terminal notch. Single pair of minute tentacular cirri. Dorsal cirri usually small, papilliform to oval, present on all segments or absent on chaetiger 2 in adults of some species. Compound chaetae with heterogomph articulations, falcigers all similar in shape and blade length, sometimes pseudospinigers with simple shaft tips, blades relatively similar to falcigers but longer. Dorsal simple chaetae similar throughout body, tips unidentate or bidentate, with both teeth similar. Ventral simple chaetae on posterior parapodia. Two usually long anal cirri present. Pharynx with anterior margin surrounded by soft lobes, with anterior tooth. Mature females carrying eggs ventrally, developing to embryos and juveniles, lacking capillary notochaetae (natatory chaetae); mature males with long natatory chaetae; some species viviparous [details]
Status Parexogone raised from subgenus to genus by Böggemann & Westheide (2004), because (p.433) of differences from Exogone in heterogomph falcigers and supra-acicular simple chaetae plus "a different reproductive mode" (mode unstated but in Aguado et al (2008) stated that females carry progeny ventrally with some species viviparous.)
[details]
