Table 2.

Main morphological characters in species of Oneirophanta Théel, 1879.

Characteristics	O.idsseica sp. nov.	O.brunneannulata sp. nov.	O.lucerna sp. nov.	O.conservata	O.setigera	O.mutabilismutabilis	O.mutabilisaffinis
Tentacle number	15	20	19 or 20	Only eight founded	15–20	18–20	18–20
Ventrolateral tube feet number and arrangement	40–50 pairs, in alternating two or three rows	~ 37 pairs, in alternating three rows	11–14 on each side, in single rows	33–34 on each side, in two rows	16–30 on each side, in alter-nating double rows	8–28 (36), in alterna-ting double rows	15–20 (44), –
Dorsal papillae number and arrangement	18–20 on each side, in single rows	23–26 on each body side, in single rows	15–27 on each body side, in regular single rows	30, in double rows	12–32, in irregular double rows	4–19, in single rows	5–35, in single or double rows
Ventrolateral papillae number and arrangement	9–12 on each side, in single rows	9–11, in single rows	7–10, in single rows	13, in two rows	9–17, –	4–17, –	5–11, –
Midventral tube feet number and arrangement	Two and rudimentary, one positioned in the front third of the body, the other positioned in the back third of the body	Two, rudimentary, one placed on half the body, the other placed on a rear quarter of the body	Two and rudimentary, one placed on half the body, the other on a rear quarter of the body	12, placed through-out the entire length of this radius, sometimes in pairs	0–6, in front of the anus	0–4, pre-anal	3–9, usually one pair placed pre-anal
Dorsal Deposit	Perforated plates with open ramifications and crosses with dichotomously ramified ends or irregular, and spatulated rods	Perforated plates, 0.6–1.1 mm in diameter, some with irregular central apophysis	Spatulated crosses, spinous rods with branched spines, spatulated rods up to 1 mm	Perforated plates, some in the developmental stage, rods with slightly thorny surfaces, pointed or bifid ends occasionally	Spatulated crosses, 1.1–3 mm	Perforated plates, 2–3 mm in diameter, bearing several small, vertical spines, with a rather slender mesh-work	Robust and rather small, vertical spines, often irregularly shaped due to elongation of the primary rod
Ventral	Perforated plates and crosses with open ramifications	Numerous irregular broken deposits, amorphous shaped	Spinous rods and spatulated crosses with arms twice divided	–	Spatulated crosses, 0.2–2.3 mm	Vary more, less well-developed, and less irregular than dorsal ones	–
Papillae	Slender or sturdy rods, crosses with open ramifications, some bearing 2–3 processes	Perforated plates with 2–4 large central holes, robust spatulated rods and few spatulated crosses	Spinous rods and spatulated rods		Spatulated rods	Perforated plates only	Perforated plates, small, sturdy and spatulated rods
Tube feet	Mainly robust spatulated rods and irregular deposits	Smooth spindle-shaped rods, slender rods with dichotomously ramified ends, sturdy spatulated rods with rudimentary or enlarged ends	Spinous rods of two types, one irregularly shaped, the other with few regularly distri-buted spines, sturdy spatulated rods with perforated extremities that occasionally bifurcated		–	Perforated plates	Sturdy and spatulated rods
Tentacle	Sturdy spatulated rods	Slender and sturdy rods with open ramifications			–	Irregularly placed and stout rods, somewhat branched	Clusters of rod-shaped spicules
Data source	Bribiesca-Contreras et al. 2022; this study	This study	This study	Koehler and Vaney 1905; Hansen 1975	Ludwig 1893; Hansen1975	Théel 1879; Hansen 1975	Théel 1879; Hansen 1975

‘–’means data not available.