Hyman LH 1944 (citation) p 3, 'This animal is remarkable in several ways: in the possession of a plicate pharynx, hitherto unknown among the Acoela, in the presence of a caudal adhesive disk, also not previously found in the order, and in its ectocommensal habits. This appears to be the first ectocommensal acoel found, although several entocommensals are known, inhabiting the interior of echinoderms.'
Notes for the valid (accepted) taxonomic name
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