WoRMS taxon detailsDicodonium floridana Mayer, 1910
284522 (urn:lsid:marinespecies.org:taxname:284522)
accepted
Species
marine,
recent only
Mayer, A. G. 1910. Medusae of the world. Hydromedusae, Vols. I & II. Scyphomedusae, Vol III. Carnegie Institution, Washington. pp. 735, plates 1-76., available online at https://www.biodiversitylibrary.org/page/1327020
page(s): 46, pl. 2 fig. 5 [details] 
Type locality contained in Dry Tortugas
type locality contained in Dry Tortugas [details]
Taxonomy The very peculiar shape of the tentacles make this species easily recognisable. Although Mayer observed several specimens,...
Taxonomy The very peculiar shape of the tentacles make this species easily recognisable. Although Mayer observed several specimens, the species has not been found again. The absence of ocelli is a good argument for not allocating this species in the Corynidae. New life cycle observations and information on the nematocysts are needed to allow a correct placement of this species. It is presently best classified as Anthoathecata incerta sedis. A new genus needed as the genus Dicodonium has as type species D. cornutum Haeckel, 1879. [details] description (after Mayer, 1910) bell about 4 mm high, 3 mm wide, with thin, uniform walls and a slight apical projection. With two...
description (after Mayer, 1910) bell about 4 mm high, 3 mm wide, with thin, uniform walls and a slight apical projection. With two equally-developed, diametrically opposed tentacles, each about 3/4 as long as bell-height. Near the distal end of the tentacles a knob-like swollen region, hollow, with a thin terminal process. Marginal bulbs small, without ocelli. In addition to the large tentacles there are 2 small, tapering, rudimentary tentacles placed at 90° to the large tentacles. Four narrow, straight radial canals and circular canal present. Manubrium flask-shaped, thickened in middle region. The gonads develop around the manubrium. The rudimentary tentacles may occasionally develop so as to be nearly as long as the pair of large tentacles. [details]
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2025). World Hydrozoa Database. Dicodonium floridana Mayer, 1910. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=284522 on 2025-05-10
Date action by
Nomenclatureoriginal description
Mayer, A. G. 1910. Medusae of the world. Hydromedusae, Vols. I & II. Scyphomedusae, Vol III. Carnegie Institution, Washington. pp. 735, plates 1-76., available online at https://www.biodiversitylibrary.org/page/1327020
page(s): 46, pl. 2 fig. 5 [details] basis of record Vervoort, W.; Schuchert, P. & van der Land, J. (2000-2007). as a contribution to UNESCO-IOC Register of Marine Organisms. (look up in IMIS) [details]  Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Taxonomy The very peculiar shape of the tentacles make this species easily recognisable. Although Mayer observed several specimens, the species has not been found again. The absence of ocelli is a good argument for not allocating this species in the Corynidae. New life cycle observations and information on the nematocysts are needed to allow a correct placement of this species. It is presently best classified as Anthoathecata incerta sedis.A new genus needed as the genus Dicodonium has as type species D. cornutum Haeckel, 1879. [details] description (after Mayer, 1910) bell about 4 mm high, 3 mm wide, with thin, uniform walls and a slight apical projection. With two equally-developed, diametrically opposed tentacles, each about 3/4 as long as bell-height. Near the distal end of the tentacles a knob-like swollen region, hollow, with a thin terminal process. Marginal bulbs small, without ocelli. In addition to the large tentacles there are 2 small, tapering, rudimentary tentacles placed at 90° to the large tentacles. Four narrow, straight radial canals and circular canal present. Manubrium flask-shaped, thickened in middle region. The gonads develop around the manubrium. The rudimentary tentacles may occasionally develop so as to be nearly as long as the pair of large tentacles. [details] Unreviewed
Biology colonial, gonophores (no medusae) [details]
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