Leptosynaptinae Smirnov, 1989, 1928

Solis-Marin, Francisco Alonso, Conejeros-Vargas, Carlos Andres, Caballero-Ochoa, Andrea Alejandra & Byers, Sheila Colleen, 2023, Epitomapta aumakua sp. nov., a new species of apodous sea cucumber from Hawai'i (Echinodermata, Holothuroidea, Apodida), ZooKeys 1183, pp. 73-80 : 73

Subfamily Leptosynaptinae Smirnov, 1989

Diagnosis.

Pinnate tentacles 10, 11 or 12, with 1-9 digits on each side. Digits increase in size from base to tip of tentacle. Anchor plate develops from a rod which lies at a right angle to stock of developing anchor. Anchor plates with small number of holes, usually seven (6+1) in main part of the plate: six holes form a circle around a central hole. Articular end of plate usually has a “ledge” for contact with anchor keel. Anchor arms regularly serrated, rarely smooth, and without minute knobs on the vertex ( Heding 1928; Smirnov 1989).