Porpitidae Goldfuss, 1818 
AphiaID: 20790

Classification: Biota > Animalia > Cnidaria > Hydrozoa > Hydroidolina > Anthoathecata > Capitata

Status		accepted
Record status		Checked by Taxonomic Editor
Rank		Family
Typetaxon		Porpita Linnaeus, 1758
Parent		Capitata
Synonymised taxa		Chondrophora Totton, 1954 (synonym) Velellidae (synonym)
Sources		basis of record: Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. Thalassia Salent. 24: 47-296 (look up in IMIS) [details] from synonym: Howson, C.M.; Picton, B.E. (Ed.) (1997). The species directory of the marine fauna and flora of the British Isles and surrounding seas. Ulster Museum Publication, 276. The Ulster Museum: Belfast, UK. ISBN 0-948150-06-8. vi, 508 (+ cd-rom) pp. (look up in IMIS) [details] [view taxon] from synonym: ITIS database, available online at http://www.itis.gov [details] [view taxon]
Direct child taxa [show all]		Genus Porpema Haeckel, 1888 Genus Porpita Linnaeus, 1758 Genus Velella Lamarck, 1801
Environment		marine, brackish, fresh, terrestrial
Fossil range		recent + fossil
Links		To GenBank To ITIS
Note		Diagnosis: Hydroid colonial, mobile, when mature floating on water surface, with a chitinous internal skeleton, forming a floating chamber, covered by mantle, hydranths polymorphic on underside of float, one central, large, atentaculate gastrozooid; surrounded by gastro-gonozooids and dactylozooids; tentacles capitate or reduced to nematocyst patches. Medusa with evenly-rounded bell; four or eight radial canals and an equal number of exumbrellar nematocystcyst tracks containing stenoteles, nematocyst tracks originating from marginal bulbs; circular canal present; manubrium short, conical; mouth circular; gonads perradial or irregularly arranged perradially and interradially; two opposite thin marginal tentacles terminating in large spherical nematocyst knob, with or without an additional adaxially oriented short tentacle developed from tentaculiferous bulbs; two or six small marginal bulbs without tentacles; ocelli lacking; cndome comprising spherical stenoteles, macrobasic euryteles and atrichous haplonemes; zooxanthellae generally present. [details]
LSID		urn:lsid:marinespecies.org:taxname:20790
Taxonomic Edit history		Date    action    by 2004-12-21 15:54:05Z   created   db_admin 2009-04-28 06:22:10Z   changed   Schuchert, Peter
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		Citation: Schuchert, P. (2013). Porpitidae. In: Schuchert, P. (2013) World Hydrozoa database. Accessed through: Schuchert, P. (2013) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=20790 on 2013-05-23