Dynamena crisioides Lamouroux, 1824

Calder, Dale R., 2013, Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA, Zootaxa 3648 (1), pp. 1-72 : 26

Dynamena crisioides Lamouroux, 1824

Fig. 8b

Dynamena crisioides Lamouroux, 1824: 613 , pl. 90, figs. 11, 12.

Type locality. Indonesia: Moluccas ( Lamouroux 1824) .

Voucher material. Off Palm Beach , 26°48.4’N, 79°58.6’W, 37 m, 16.ix.1975, Johnson-Sea-Link, JSL 288, one colony, 4.5 cm high, without gonophores, coll. S. Nelson, ROMIZ B1089 .— Fort Pierce Inlet , north jetty, north side, 27°28’24.1”N, 80°17’21.2”W, intertidal zone, on rocks, 14.vii.2012, 28° C, 35‰, collected manually, seven cormoids, up to 3.7 mm high, two with gonothecae, coll. D.R. Calder, ROMIZ B3965 .

Remarks. Dynamena crisioides Lamouroux, 1824 is a conspicuous and well-known intertidal and shallow subtidal species occurring at lower latitudes worldwide. It was found here off the east coast of Florida at a depth of 37 m (ROMIZ B1089), as well as intertidally on jetty rocks at Fort Pierce Inlet (ROMIZ B3965). Taxonomic ( Calder 1991a) and ecological ( Calder, 1991d) accounts of the species have been given earlier.

Reported distribution. Atlantic coast of Florida. First record.

Western Atlantic. Bahamas, Florida Keys ( Fraser 1944), and Dry Tortugas ( Van Gemerden-Hoogeveen 1965) to Brazil (Oliveira et al. submitted), including Bermuda ( Calder 1991a), the Gulf of Mexico ( Calder & Cairns 2009), and the Caribbean Sea ( Galea 2008).

Elsewhere. Circumglobal in shallow waters of the tropics and subtropics ( Calder, 1991a; Schuchert 2003).

Figures

FIGURE 8. a, Diphasia digitalis: part of a hydrocladium with hydrothecal pairs, ROMIZ B3964, scale equals 0.25 mm. b, Dynamena crisioides: part of hydrocaulus with basal part of a hydrocladium and hydrothecae, ROMIZ B3965, scale equals 0.25 mm. c, Dynamena dalmasi: part of hydrocaulus with two hydrothecal pairs, ROMIZ B1081, scale equals 0.25 mm. d, Dynamena disticha: part of hydrocaulus with two hydrothecal pairs, ROMIZ B3966, scale equals 0.20 mm. e, Pasya quadridentata: part of hydrocaulus with three hydrothecal pairs, ROMIZ B1085, scale equals 0.25 mm. f, Pasya quadridentata: gonotheca, ROMIZ B1085, scale equals 0.25 mm. g, Salacia desmoides: part of hydrocaulus with two hydrothecal pairs, ROMIZ B3967, scale equals 0.25 mm. h, Sertularella areyi: part of hydrocaulus with two hydrothecae, ROMIZ B1135, scale equals 0.5 mm. i, Sertularella conica: part of hydrocaulus with three hydrothecae, ROMIZ B1087, scale equals 0.25 mm.