Henricia epiphysialis, Ubagan & Lee & Kim & Shin, 2020
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publication ID |
https://dx.doi.org/10.3897/zookeys.997.52703 |
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publication LSID |
lsid:zoobank.org:pub:6E2E800E-E806-462F-AA0F-FF2F57E2629F |
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persistent identifier |
https://treatment.plazi.org/id/E50768C6-B625-43ED-82E1-6D581E38975B |
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taxon LSID |
lsid:zoobank.org:act:E50768C6-B625-43ED-82E1-6D581E38975B |
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treatment provided by |
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scientific name |
Henricia epiphysialis |
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sp. nov. |
Henricia epiphysialis sp. nov. Figs 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4
Material examined.
Holotype: South Korea • 1 specimen; waters adjacent to Namae, 37°55'57.31"N, 128°48'45.58"E; 40 m; 28 May 2014; S. Shin and T. Lee; fishing net; MERBK-A-1255. Paratypes: South Korea • 1 specimen; waters adjacent to Jukbyeon, 37°3'32.49"N, 129°26'14.57"E; 100 m; 19 Dec. 2014; S. Shin and T. Lee; fishing net; NIBRIV0000837785. 1 specimen; waters adjacent to Namae, 37°55'57.31"N, 128°48'45.58"E; 40 m; 28 May 2014; S. Shin and T. Lee; fishing net; MERBK-A-1256.
Diagnosis.
Regular size, R/r = 4.9-5.4, abactinal plates crowded with 11-40 spines, abactinal and lateral spines forming distinct hooked crown, epiphyseal ossicles formed at ends of abactinal and lateral plates, one to three papulae, marginal and ventrolateral series distinguishable, adambulacral plates bearing 10-14 slender spines.
Description.
Holotype. (Figs 2 View Figure 2 - 4 View Figure 4 ) Size. R = 51 mm, r = 10 mm, R/r = 5.1.
Arms five, semi-cylindrical, gradually tapering to tips (Fig. 2A-B View Figure 2 ). Abactinal paxillae formed in group with evenly spaced spinulation, bearing 11-40 spines with serrated tips (Fig. 2C View Figure 2 ). Denuded abactinal spines forming hooked crown composed of nine to 11 large hook-shaped spinules enclosing nine to 12 small connected apical tips (Fig. 4A-C View Figure 4 ). Paxillae on lateral side of arms similar to abactinal paxillae (Fig. 2D View Figure 2 ). Denuded abactinal plates reniform, usually connected to end of other plate in mid convex part of plate, larger than papular areas, partially enclosing papular area on concave side of plate. Papular areas narrow, containing one to three papulae in an area. Some papular areas divided by small ossicles (Fig. 3A View Figure 3 ). Almost every skeletal plate aside from adambulacral plates was observed bearing epiphyseal ossicles at ends of plate (Fig. 3A, C, D View Figure 3 ). Madreporite circular in form, slightly elevated, bearing spines same as adjacent spines (Fig. 3B View Figure 3 ). Shape of spines on lateral side nearly similar to that of abactinal spines (Fig. 4D-F View Figure 4 ). Superomarginal, inferomarginal, and ventrolateral plates well defined forming elongated cross shape and arranged in rows showing consistent series (Fig. 3D View Figure 3 ). Superomarginal plates bearing 12-28 spines, bend upward toward base of arm in crescentic form, and reach tip of arm (Figs 3C-D View Figure 3 , 4D View Figure 4 ). Intermarginal plates forming small elongated shape, extending near half of arm (Fig. 3D View Figure 3 ). Inferomarginal plates longer than superomarginal and ventrolateral plates, bearing 34-45 spines, reaching tip of arm (Figs 3C-D View Figure 3 , 4E View Figure 4 ). Ventrolateral plates forming a rounded cross shape, bearing 21-25 spines, reaching near tip of arm, epiphyseal ossicles forming a knob-like connection to adambulacral plates, extending to middle part of arm (Figs 3D View Figure 3 , 4F View Figure 4 ). Adambulacral plates forming semi-rounded shape, bearing 10-14 slender, thorny spines, arranged in two transverse series (Figs 3D-E View Figure 3 , 4G View Figure 4 ), articulated with ambulacral plates (Fig. 3E View Figure 3 ). Furrow spine single, somewhat curved (Fig. 4H View Figure 4 ). Oral part bearing two slender, bluntly pointed oral spines, with six or seven marginal spines, and five or six sub-oral spines similar to adambulacral spines (Fig. 2F View Figure 2 ). Paired oral plates forming a slightly elongated triangular shape, articulated with first pair of adambulacral plates. Plates of inter-radial area slightly compact (Fig. 3F View Figure 3 ).
Paratypes. Size. R = 39 mm, r = 8 mm, R/r = 4.9; R = 60 mm, r = 11 mm, R/r = 5.4.
Etymology.
The specific name is derived from the Latin " epiphysialis ," which means the end part of a long bone.
Ecology.
This species is found on hard substrates (rocky bottom) from a shallow water of a depth of 40 m to 100 m.
Distribution.
South Korea (East Sea).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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