Agalophenia sinuosa Bale, 1888

Galea, Horia R., 2020, Aglaopheniid hydroids (Cnidaria: Hydrozoa: Aglaopheniidae) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program, European Journal of Taxonomy 615, pp. 1-47 : 4-5

Agalophenia sinuosa Bale, 1888

Figs 1C , 3

Aglaophenia sinuosa Bale, 1888: 790 , pl. 21 figs 1–2.

Aglaophenia bakeri Bale, 1919: 353 , pl. 17 figs 7–8.

Aglaophenia sinuosa – Whitelegge 1889b: 194. — Jäderholm 1917: 19, pl. 2 fig. 9. — Bale 1919: 352. — Watson 1994: 67; 2002: 347, fig. 6e–h; 2018: 19, fig. 8b–f. — Vervoort & Watson 2003: 278, figs 65e–f, 66a–e.

Aglaophenia bakeri – Watson 1994: 67; 2018: 19.

Material examined

PACIFIC OCEAN • 1 plume, ca 8.5 cm high, hydrorhiza and gonothecae missing; off New Caledonia, stn DW4970 ; 21°01ʹ S, 158°31ʹ E; 750 m; 8 Sep. 2017; KANADEEP leg.; MNHN-IK-2015-545 .

Remarks

For modern descriptions of this species, refer to Watson (2002, 2018) and Vervoort & Watson (2003).

As noted by Watson (2002), A. sinuosa is easily recognizable through the sinuous bends at intervals along the stem that mark a reversal of the orientation of cladia. Although a reversal is present in sample MNHN-IK-2015-545, the condition of the stem is little affected.

Distribution

South and SE Australia, Tasman Sea ( Watson 2018), New Caledonia (present study).

Genus Cladocarpus Allman, 1874

Figures

Fig. 1. A–B. Aglaophenia howensis Briggs, 1918, fertile cormoid (A) and corbula (B), both from sample MNHN-IK-2015-544. — C. Aglaophenia sinuosa Bale, 1888, cormoid from sample MNHN- IK-2015-545. — D–E. Cladocarpus asymmetricus sp. nov., fertile cormoid (D) and phylactocarp (E) from sample MNHN-IK-2015-530 (holotype). — F. Cladocarpus keiensis Schuchert, 2003, colony from sample MNHN-IK-2015-534. Scale bars: F = 2 cm; A, C–D = 1 cm; E = 1 mm; B = 500 µm.

Fig. 3. Aglaophenia sinuosa Bale, 1888, from sample MNHN-IK-2015-545. A–B. Same portion of a stem in frontal (A) and dorsal (B) aspects. C–E. Same hydrotheca in lateral (C), frontal (D) and apical (E) views. Scale bars: A–E = 200 µm.