Urticina sp.

Sanamyan, N. P., Sanamyan, K. E., Bocharova, E. S., Morozov, T. B. & Galkin, S. V., 2023, Sea anemones (Actiniaria, Corallimorpharia and Zoantharia) from the Western Bering Sea (Northwest Pacific), Invertebrate Zoology 20 (1), pp. 27-56 : 34

Urticina sp.

MATERIAL. PL-99-83, 60.480°N 171.747°E – 60.485°N 171.758°E, depth 102 m, sample 17, one specimen collected.

REMARKS. The species has smooth body; it differs from Urticina timuri in the size of its nematocysts.

cf. Urticina sp.

Fig. 2 I .

MATERIAL. LV-82-11, 60.8282ºN 174. 2954ºE – 60.8411ºN 174.3782ºE, depth 682– 617 m, two specimens photographed; LV-82-15, 61.1519ºN 174.9132ºE – 61.1725ºN 174.8792ºE, depth 491– 429 m, four specimens photographed; LV-82-18, 61.1190ºN 174.9691ºE, depth 682 m, one specimen photographed.

REMARKS. Seven specimens are photographically documented on the Koryak slope at depths of 429–682 m, none collected. They seem to be related to Cribrinopsis sp.1 , together with which they may

occur, and have the same decamerous arrangement of the tentacles in four cycles (10+10+20+40=80). However, they are paler, the oral disc is pinkishorange; tentacles are pale, transparent, thick, with blunt tips, their length is equal to the radius of the oral disc, without moiré, tips are beige-yellowish; the actinopharynx is pale. The diameter of the expanded tentacular crown is up to 10–13 cm. They are deeper buried in mud, up to the level of margin. It was not possible to determine whether they have marginal spherules. It is possible that they belong to another species of Cribrinopsis or may belong to a related genus Urticina . This species, unlike Cribrinopsis sp.1 , more often occurs in community which includes the coral Halipteris cf. willemoesi with the commensal ophiuroid Asteronyx and the echinoid Brisaster latifrons .

Figures

Fig. 2. A — Relicanthus cf. daphneae; B — Actinernus robustus; C — Edwardsia sp.; D–E — Edwardsiidae spp. from the Vulcanologov Massif; F — Edwardsiidae sp. from the Koryak slope; G — Dactylanthus sp.; H — Cribrinopsis sp.1; I — cf. Urticina sp.; J — Liponema brevicorne; K — Sicyonis denisovi; L — S. kuznetsovi. Рис. 2. A — Relicanthus cf. daphneae; B — Actinernus robustus; C — Edwardsia sp.; D–E — Edwardsiidae spp. на массиве Вулканологов; F — Edwardsiidae sp. на КорЯкском склоне; G — Dactylanthus sp.; H — Cribrinopsis sp.1; I — cf. Urticina sp.; J — Liponema brevicorne; K — Sicyonis denisovi; L — S. kuznetsovi.