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MarBEF Data System |
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WoRMS taxon details
original description
Russell, F.S., 1953. The medusae of the British Isles. Anthomedusae, Leptomedusae, Limnomedusae, Trachymedusae and Narcomedusae. : 1-530, pls. 1-35. page(s): 314 [details] Available for editors [request]
context source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [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. <i>Thalassia Salent. 24</i>: 47-296 (look up in IMIS) [details]
From editor or global species database
Diagnosis Medusa with small small manubrium; no gastric peduncle; four radial canals; gonads on radial canals, separated from manubrium and divided into two moieties by a median groove; tentacles hollow, smooth or moniliform; without excretory papillae, without cirri; eight closed statocysts, usually each on a bulbous-like swellings; without ocelli.
Hydroid colony stolonal or erect sympodial, arising from a creeping hydrorhiza; hydrotheca pedicellate, tubular to deeply campanulate, persistent, with a cone-shaped operculum formed by separate triangular flaps demarcated or not from hydrothecal margin by a basal crease line; diaphragm present; gonophores as free medusae, gonotheca usually on stolons, sometimes on erect shoot. [details]
From editor or global species database
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