WoRMS note details

TypeDiagnosis
LanguageEnglish
ISO 639-3eng
NoteHydroid stolonal or sessile, hydranths with an oral whorl of capitate tentacles, with or without aboral filiform tentacles; medusa buds borne singly on hydranth body immediately above filiform tentacles or in similar position when these are absent.
Medusa adapted to a crawling and walking mode of life, exceptionally still able to swim; without brood-chamber above manubrium; with or without continuous or interrupted nematocyst ring along margin; gonads around manubrium or developed on manubrial protrusions; with six to eleven radial canals, some bifurcating shortly distal to manubrium; mouth circular with or without nematocyst knobs; with up to 60 marginal tentacles, dichotomous, upper branch with several nematocyst clusters, lower with adhesive organ; often asexual reproduction by medusa budding or by fission; with abaxial ocelli at tentacle base.
SourceSchuchert, P. 2006a. The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Capitata Part 1. Revue suisse de Zoologie 113: 325-410. available online at http://www.biodiversitylibrary.org/item/128494#page/101/mode/1up
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Date   action   by
2013-07-05 08:42:48Z  created  Schuchert, Peter
2014-01-19 20:14:11Z  checked  Schuchert, Peter