Ophiophragmus papillatus Ziesenhenne 1940

Disk rounded (dd = 1.7 to 2.7 mm). Disk covered with small and imbricated scales. There is a central primary plate surrounded by five separated smaller scales. There are a few blunt papillae in the center of the disk. The disk margin is composed of small and rounded papillae. Radial shields separated proximally by two large scales and distally in contact (Fig. 1J).Ventral side of the disk covered by imbricated and finer scales than those on the dorsal side (Fig. 1K). Oral shields diamond-shaped. Adoral shields meeting within. Three rounded oral papillae on each side of the jaw, apical papillae the largest and thickest. Four teeth (Fig. 1L). Dorsal arm plates rounded, wider than long (Fig. 1H). Ventral arm plates quadrangular with rounded margins, wider than long. Three blunt, thick and small arm spines; upper spine is the most robust. Two small tentacle scales perpendicular to each other (Fig. 1I). Dorsal side of the disk creamy-white. Dorsal arm plates brown with black spots, and with a creamy middle longitudinal line along the arms (Fig. 1G, H). Ventral side uniformly creamy-white (Fig. 1K).

Tangola Island, Tangola-Tangola Bay, Oaxaca, Mexico (Station 260–34) (Ziesenhenne 1940). In this study, Ophiophragmus papillatus was collected on coral reefs from Guerrero and Oaxaca at a depth of 6.4 m.