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WoRMS taxon details
Nomenclatureoriginal description
Coward, W. E. (1909). On Ptilocodium repens , a new gymnoblastic hydroid epizoic on a pennatulid. Proceedings Koninklijke Nederlandsche Akademie van Wetenschappen Amsterdam, Sect. Sci. 17(2): 729-735.
page(s): 635 [details] 
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]
Othercontext source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [details]
From editor or global species database
Diagnosis
Hydroids sessile, hydrorhiza stolonal, reticular or encrusting and covered by naked coenosarc; hydranths polymorphic; gastrozooid without tentacles; dactylozooids with four or more capitate tentacles, sometimes filiform; gonophores on gonozooids or gastro-gonozooids; reproduction by fixed sporosacs, eumedusoids or free medusae. Medusa umbrella more or less bell-shaped; with or without radial exumbrellar furrows; centripetal tracks or exumbrellar rows of refringent spots; with marginal nematocyst ring; marginal tentacles absent or present, solid and nematocysts concentrated at tips; four radial canals and circular canal; manubrium tubular or bottle-shaped, with mouth arms with terminal nematocyst clusters, gonads adradial or interradial. [details]
Identification
KEY TO THE PTILOCODIDAE HYDROIDS:
1a dactylozooids of two types . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydrichthella
1b dactylozooids of one type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2a hydrorhiza crust-like, not covered by visible perisarc . . . . . . . . Ptilocodium
2b hydrorhiza a network of perisarc-protected tube-like stolons . . Thecocodium
KEY TO THE PTILOCODIDAE MEDUSAE:
1a no marginal tentacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tregoubovia
1b with marginal tentacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2a four interradial gonads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thecocodium
2b eight adradial gonads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hansiella
[details]
From editor or global species database
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