Subfamily Astrocharinae Okanishi, O’Hara & Fujita, 2011 a

Diagnosis. Arms simple, coiled. Disc five-lobed or circular, covered with plate-shaped external ossicles. Teeth triangular and widened, flat, situated on top of dental plate. Radial shields narrow, mono-layered, and naked in species of Astrocharis . Ventral arm plates small, disappearing on middle to distal portion of arms. Arm spines up to three. Genital slits close to periphery of disc.