Halopteris peculiaris
Schuchert 1997: 84
Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program
Galea, Horia R.
Maggioni, Davide
European Journal of Taxonomy
2020
2020-08-26
708
1
58
3JFQZ
Billard, 1913
Billard
1913
[586,1002,1504,1531]
Hydrozoa
Halopterididae
Halopteris
Animalia
Leptothecata
36
37
Cnidaria
species
peculiaris
Figs 14N–P, 15D–E
Halopteris peculiaris– Schuchert 1997: 84, figs 29–30.
Material examined PACIFIC OCEAN• 1 colony composedof a few fertile stems, up to 6 cmhigh; off New Caledonia, stn DW4774; 23°01′ S, 168°19′ E; 100– 90 m; 28 Aug. 2016; KANACONOleg.; MNHN-IK-2015-609.
Remarks For synonymy and a description, refer to Schuchert (1997). In the present material, the lateral nematothecae associated to the cauline hydrothecae on the side opposite to the cladial apophyses are often absent ( Fig. 14O); in only rare instances, a pair is formed ( Fig. 14P). The cladia display a regular structure: they begin with a short, quadrangular, athecate segment, followed by an ahydrothecate internode bearing a superior nematotheca and ending distally in an oblique node; afterwards, the segmentation is heteromerous, with up to 8 hydrothecate internode alternating with ahydrothecate counterparts ( Fig. 14N); the latter are short, delimited proximally by a transverse node and distally by an oblique node, and bear a frontal nematotheca; the hydrothecate internodes are slightly longer, are delimited proximally by an oblique node and distally by a transverse one, and bear distally a hydrotheca and its 4 associated nematothecae: a mesial, a pair of laterals, and a scale-shaped axillar one. There is an important sexual dimorphism of the gonothecae: the female, given off from below the cauline hydrothecae, are large, ovoid and bear proximally 3 nematothecae ( Fig. 15D); the male gonothecae, borne on cladia, are comparatively minute, and bear a single basal gonotheca ( Fig. 15E).
Distribution North Ubian Island, Philippines( Billard 1913), Lizard Island, Australia( Schuchert 1997), South Africa[ Millard 1975, as Halopteris glutinosa(Lamouroux, 1816)].
2854853343
2016-08-28
KANACONO
New Caledonia
90
-23.016666
PACIFIC OCEAN
1257
168.31667
36
37
MNHN-IK-2015-609
1