Obelia oxydentata Stechow, 1914

Calder, Dale R., 2013, Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA, Zootaxa 3648 (1), pp. 1-72 : 59

publication ID

https://doi.org/ 10.11646/zootaxa.3648.1.1

publication LSID

lsid:zoobank.org:pub:22089255-436A-4DBB-BD93-1D3C8CF281FE

DOI

https://doi.org/10.5281/zenodo.5263516

persistent identifier

https://treatment.plazi.org/id/039B197E-FFE5-F57E-E6F9-FC34FC891325

treatment provided by

Felipe

scientific name

Obelia oxydentata Stechow, 1914
status

 

Obelia oxydentata Stechow, 1914 View in CoL

Fig. 16g View FIGURE 16

Obelia View in CoL (?) oxydentata Stechow, 1914: 131 View in CoL , fig. 7.

Obelia oxydentata View in CoL .— Weiss, 1948: 158.

Type locality. Virgin Islands: St. Thomas , Charlotte Amalie ( Stechow 1914) .

Voucher material. Fort Pierce , ship canal at Link Port, 27°32’05”N, 80°20’50”W, 0.1 m, 17.ii.1991, on prop roots of Rhizophora mangle , 15° C, 22‰, collected by snorkeling, several colony fragments, up to 9 mm high, without gonophores, coll. D.R. Calder, ROMIZ B1112 GoogleMaps .

Remarks. Specimens referred here to Obelia oxydentata Stechow, 1914 were all small (<1 cm high) with monosiphonic hydrocauli. Hydroids with the same characters have been reported elsewhere from shallow waters of the tropical and subtropical western Atlantic as O. bidentata Clark, 1875 (e.g., Bermuda: Calder 1991a; Brazil: Migotto 1996; Guadeloupe: Galea 2010). Such specimens contrast with the original descriptions of O. bidentata (colonies polysiphonic and up to 15 cm high) and its subjective synonym O. bicuspidata Clark 1875 (colonies polysiphonic and up to 8 cm high), both from temperate waters in the Long Island Sound area. While I earlier considered O. oxydentata to be conspecific with O. bidentata (e.g., Calder 1991a), it appears to be a different species. Obelia longicyatha Allman, 1877 from 90 fathoms (165 m) off Florida Reef, with small (<2.5 cm) but partly polysiphonic colonies, has also been regarded in many recent works as conspecific with O. bidentata . Comparisons are warranted to determine whether the supposedly shallow-water O. oxydentata is identical with it.

Reported distribution. Atlantic coast of Florida. Biscayne Bay ( Weiss 1948).

Western Atlantic. Florida (this report) to Brazil ( Vannucci Mendes 1946), and including the Caribbean Sea ( Stechow 1914; Fraser, 1944). Its range will likely prove to be much more extensive once it can be reliably distinguished from Obelia bidentata Clark 1875 .

Elsewhere. Tropical eastern Pacific ( Stechow 1914).

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Campanulariidae

Genus

Obelia

Loc

Obelia oxydentata Stechow, 1914

Calder, Dale R. 2013
2013
Loc

Obelia oxydentata

Weiss, C. M. 1948: 158
1948
Loc

Obelia

Stechow, E. 1914: 131
1914
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