Henricia densispina Sladen 1879
Creators: name: Xiao, Ning
name: Liao, Yulin
name: Liu, Ruiyu
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Asteroidea
Spinulosida
Echinasteridae
Henricia
Henricia densispina

description: Henricia densispina (Sladen, 1879)
Figures 5 A–F, 12D
Cribrella densispina Sladen, 1879: 432, pl. 8, figs 5–9.
Henricia densispina Fisher, 1919: 436 –437, pl. 118, figs 2, 3, pl. 119, figs 1–3.— Hayashi, 1940: 140, pl. 10, figs 7, 8.— Djakonov, 1961: 20.
Material examined. Bohai Sea. One (R 37– 32 mm, r 8.5 mm, R: r 4.4–3.8), MBM016347, Stn. 1098, 38°40ʹN, 121°10ʹE, 28 Jan 1959.
Yellow Sea. One (R 23– 20 mm, r 5.1 mm, R: r 4.5–4.4), MBM175706, CN VXII74B-1, Stn.Y108, 50m, sandy mud and gravel, AT, coll. TANG, 6 Jul 1958; One (R 36– 32 mm, r 6.7 mm, R: r 5.4–4.8), MBM175695, CN V 13 B-1, Stn.Y107, 54m, muddy sand, BT, coll. TANG, 30 Jul 1957; One (R 55– 51 mm, r 10.0 mm, R: r 5.5–5.1), MBM175716, CN VXI32B-3, Stn.Y803, 56.5m, BT, coll. TANG, 16 Nov 1957; One (R 25– 20 mm, r 5.4 mm, R: r 4.6–3.7), MBM016343, CN 150-28, Stn. 3008, 37°00ʹN, 124°00ʹE, 77m, sandy mud and shell, BT, 10 Nov 1958; One (R 26– 22 mm, r 6.4 mm, R: r 4.1–3.4), MBM016346, CN H266B-12, Stn. 3008, 37°00ʹN, 124°00ʹE, 76m, sandy mud and shell, AT, coll. HUANG, 17 Oct 1959; Two (R 36– 27 mm, r 7.8 mm, R: r 4.6–3.5; R 23– 19 mm, r 6.5 mm, R: r 3.5–2.9), MBM016348, CN H156B-7, Stn.3008, 37°00ʹN, 124°00ʹE, 73.5m, sandy mud and shell, AT, coll. CHEN, 8 Jul 1959; One (R 39– 36 mm, r 9.2mm, R: r 4.2–3.9), Dry specimen, CN Y358B-26, Stn. 2064, 37°30ʹN, 123°30ʹE, 67m, fine sand, AT, coll. CHEN, 17 Oct 1959; One (R 52– 46 mm, r 9.0 mm, R: r 5.8–5.1), Dry specimen, CN M157B-4, Stn. 2065, 37°30ʹN, 124°03ʹE, 71.3m, fine sand and gravel, BT, coll. CHEN, 8 Jul 1959; Three (R 45– 40 mm, r 9.0 mm, R: r 5.0–4.4; R 45– 37 mm, r 9.0 mm, R: r 5.0–4.1; R 36– 34 mm, r 7.6 mm, R: r 4.7–4.5), Dry specimen, CN Y0205, Stn. Y205, 38°26ʹN, 121°34ʹE, 54m, 26 Jul 1957.
Distribution. Bohai Sea, Yellow Sea, Korea Strait, Tatar Strait, Kurile Island, Japan, Philippines, 50– 770 m.
Remarks. Sladen (1879) first reported this species from the Korean Strait. Henricia densispina was subsequently recorded by Fisher (1919) from the Philippines. In addition, Hayashi (1940) reported the species from Japan and mentioned that specimens examined closely agree with Sladen’s original description rather than Fisher’s description. Therefore, there can be little doubt that specimens from the Philippines and specimens from Korean Strait and Japan are conspecific.
Hayashi (1940) noted that this species resembled Henricia leviuscula leviuscula and Henricia leviuscula spiculifera, but differed from them in the skeletal structure of abactinal and marginal plates and in the subadambulacral spines. The spinelets (Fig. 12 D) are coarser than in H. leviuscula spiculifera and finer than in H. leviuscula leviuscula. Specimens from Bohai Sea and Yellow Sea agree well with Hayashi’s description.
description: Published as part of Xiao, Ning, Liao, Yulin & Liu, Ruiyu, 2011, Records of the genus Henricia Gray, 1840 (Echinodermata: Asteroidea: Echinasteridae) from Chinese waters, pp. 1-20 in Zootaxa 3115 on pages 5-6, DOI: 10.5281/zenodo.279350