Holothuria (Lessonothuria), Lessonothuria Deichmann, 1958

Villanueva, Brenda Anaid Yanez, Solis-Marin, Francisco Alonso & Laguarda-Figueras, Alfredo, 2022, ? Holothuria (Lessonothuria) coronata sp. nov. (Echinodermata, Holothuroidea), a new species of sea cucumber from Socorro Island, Mexico, ZooKeys 1095, pp. 1-12 : 1

Subgenus Lessonothuria Deichmann, 1958

Diagnosis

(after Rowe 1969). Tentacles 17-30. Pedicels and papillae irregularly arranged ventrally and dorsally respectively, a ‘collar’ of papillae evident around the base of the tentacles, anal papillae usually apparent. Body wall soft, not very thick, usually 1 (1-3) mm, body almost cylindrical but with a more or less distinct, flattened sole. Size small to moderate, up to 150 mm long. Calcareous ring fairly stout, radial plates about twice as long as the interradial plates. Ossicles consisting of clumsy tables, the spire low to moderate and usually terminating in a ring or cluster of spines, disc well developed and spinose, rarely some tables with smooth-rimmed disc also present; rim often turned up to give a 'cup and saucer’ appearance to the table in lateral view. Pseudo-buttons abundant, usually smooth, sometimes spinose, usually irregular in outline and often reduced to a single row of three or four holes. Occasionally, quite regular buttons are present, with three pairs of holes.

Type species.

Holothuria pardalis Selenka, 1867 (original designation).