Henricia vermilion 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 vermilion; Alaska; Aleutian Islands
• Online Access: https://doi.org/10.5281/zenodo.6197352; http://treatment.plazi.org/id/03DA070DBB7C1211FF113A7FFE2CFA85

Henricia vermilion sp. nov. Figures 53–58 Henricia leviuscula (Stimpson) Fisher, 1911: 280, ( pars ), non Linckia leviuscula Stimpson, 1857. Henricia leviuscula leviuscula (Stimpson) Lambert, 2000: 104 ( pars ), Linckia leviuscula Stimpson, 1857. Type locality: Alaska, Aleutian Islands, Fox Islands, Unalaska Island, Sumner Bay (54º55 N, 166º36 W), intertidal. Type material: Holotype, LACM 1993-211.001, 1 Paratype, LACM 1993-211.002, 1 Paratype, USNM 1125120 (all types, leg. R.N. Clark, 18 June, 1993.) Diagnosis: Moderately large, R to 10 cm; disc somewhat inflated, rays fairly broad at base, long, tapering to slender points; abactinal plates small oblong shaped, fairly close placed, bearing 38–50 (on larger plates) pointed spinules, bearing numerous thorns; adambulacrals with 7–9 very thick, blunt spines, largest one at furrow edge, 1–2 slightly smaller ones behind, followed by 2 rows of 3 shorter spines. Color in life bright vermilion or scarlet. Description: Moderately large, R to 9.7 cm (Holotype R = 5.4 cm), r to 1.2 cm R:r 5.8–8.0 (Figs. 53 & 54); disc small somewhat inflated, rays long, broad at base, tapering to slender tip. Abactinal plates (Fig. 55) small, fairly close-set, bearing 38–55 (on larger plates) fairly stout, tightly packed, strongly pointed spinules, bearing numerous thorns; papular area about as large as abactinal plates, each with 3–5 papulae; madreporite small, round, bearing irregular, broken spiny ridges, located about 1/2 way between anus and disc margin. Superomarginals about two or more times as large as abactinals, and bearing 32–38 spinules; intermarginals irregular, extending just 20–25% of R; inferomarginals about 1/3 larger than superomarginals, and bearing 38–45 spinules; actinal inter-radials about 1/2 as large as inferomarginals, and bearing 21–18 spinules. Adambulacrals (Fig. 56) with normally 7–9 (rarely 10) spines, a single short, deep furrow spine, 1 rarely 2 large, thick, blunt spines at the furrow edge, 2 similar, slightly shorter spines behind, followed by 2 rows ...