Actinostola sp.2

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 : 38

Actinostola sp.2

Fig. 3E .

MATERIAL. LV-82-7, 55.3688ºN 167.2662ºE – 55.3713ºN 167.2664ºE, depth 981– 885 m, one specimen collected (sample 2) and two specimens photographed; LV-82-8, 55.3814ºN 167.2617ºE, depth 469 m, one specimen photographed.

REMARKS. Large (up to 20 cm in diameter of the tentacular crown) orange sea anemone with wide undulating oral disc and numerous tentacles (up to 360 are visible in the photographs, but probably they are more numerous). The tentacles have strong white mesogloeal thickenings on the aboral side of their bases. Large tubercles may form longitudinal ridges in the upper part of the column. This species resembles above described Actinostola sp.1 (forms a clade with it in molecular tree), and Actinostola faeculenta ; the common feature of these three species is greater number of tentacles (more than 300) in comparison with other similar species of Actinostola . The records of this species are limited to the southern slope of the Piip Volcano, four specimens were recorded in 2018 on the depths 469–981 m, and one of them was collected.

Figures

Fig. 3. A — Sicyonis sp.; B — Ophiodiscus bukini; C — Actinostola faeculenta; D — Actinostola sp.1; E — Actinostola sp.2; F — Actinostola sp.3; G — Actinostola sp.4; H — Actinostola sp.5 (photo of N. Sanamyan); I — Stomphia sp.; J — Tealidium konoplinorum; K — cf. Halcampa sp. from the northern slope of the Piip Volcano; L — cf. Halcampa sp. from the southern slope of the Piip Volcano. Рис. 3. A — Sicyonis sp.; B — Ophiodiscus bukini; C — Actinostola faeculenta; D — Actinostola sp.1; E — Actinostola sp.2; F — Actinostola sp.3; G — Actinostola sp.4; H — Actinostola sp.5 (фото Н. СанамЯн); I — Stomphia sp.; J — Tealidium konoplinorum; K — cf. Halcampa sp. на северном склоне вулкана Пийпа; L — cf. Halcampa sp. на южном склоне вулкана Пийпа.