Henricia iodinea Clark & Jewett, 2010, sp. nov.

• Main Authors: Clark, Roger N., Jewett, Stephen C.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Asteroidea; Spinulosida; Echinasteridae; Henricia; Henricia iodinea; Alaska; Aleutian Islands
• Online Access: https://doi.org/10.5281/zenodo.6197340; http://treatment.plazi.org/id/03DA070DBB65120AFF11397AFBE0F91A

Henricia iodinea sp. nov. Figures 27 –32 Type locality: Alaska, Aleutian Islands, Rat Islands, Rat Island (51º 49.594 N, 178º 27.184 E), 14 m. (AKALE 07-A0031). Type material: Holotype, LACM 2007-099.002, and 3 Paratypes, LACM 2007-099.003 ( leg. R.N. Clark, 1 July, 2007; scuba 14 m); Paratype, USNM 1125117 (Type locality); Paratype, CASIZ 180538 Alaska, Aleutian Islands, Fox Islands, Avatanak Island (54º 05.188 N, 165º 22.839 W) ( leg. R.N. Clark, 12 June, 2008; scuba 6 m); Paratype, UAM 8133 Alaska, Aleutian Islands, Islands of the Four Mountains, Carlisle Island (52º 53.973 N, 169º 59.730 W) ( leg. R.N. Clark, 15 July, 2006; scuba 7 m) (AKALE 06-0011). Diagnosis: Relatively large, R to 16 cm (Holotype R = 5.3 cm), R:r 5.1:1; rough textured; disc relatively small, rays long, slender, tapering. Abactinal plates small, irregular, forming a fairly open reticulation in small animals, but quite tight in larger individuals; plates crowned with tight bundles of blunt-tipped spinelets. Marginals widely separated at base of rays; superomarginals slightly larger than abactinals, forming a distinctive ridge that curves up aborally at the base of the rays. Adambulacrals with nine to 12 spines. Color in life purple or violet abactinally, paler orally. Description: Moderately large, R to 10.5 cm, r to 1.9 cm, R:r 5.1:1 (Figs. 27 & 28); disc relatively small, rays long, slender, tapering. Abactinal plates (Fig. 29) small (somewhat larger on disc), irregular, forming tight reticulation in large specimens, crowned with bundles of 20–30 short (to 0.5 mm), apically spinose, bluntly rounded spinelets; some plates slightly enlarged and spaced more closely together, forming irregular vermiform ridges, giving a rough texture. Madreporite small, circular and spinose. Marginal plates, widely separated at base of rays, supromarginal row somewhat larger than abactinals, sloping up prominently aborally at base of rays; intermarginals numerous (up to 10 rows) and small at ray arches, and proximal 1/5 of ray, diminishing to three ...