Pachycerianthus magnus (Nakamoto, 1919)

Stampar, Sergio N., Reimer, James D., Maronna, Maximiliano M., Lopes, Celine S. S., Ceriello, Hellen, Santos, Thais B., Acuna, Fabian H. & Morandini, Andre C., 2020, Ceriantharia (Cnidaria) of the World: an annotated catalogue and key to species, ZooKeys 952, pp. 1-63 : 1

35 Pachycerianthus magnus (Nakamoto, 1919)

Cerianthus magnus Nakamoto, 1919: 118-120

Pachycerianthus magnus : Uchida 1979: 186-189; Carter 1995: 6; Uchida and Soyama 2001: 125, 151, 152; Molodtsova 2004b: 261; Stampar et al. 2014a: 2; Stampar et al. 2014c: 350, 352; Stampar et al. 2019: 1-9

Type locality.

south of Jogashima, Sagami Bay, Miura, Kanagawa, Japan (at 1100 m depth).

Distribution.

Japan and China, shallow to deep waters.

Remarks.

The description of Cerianthus magnus by Nakamoto (1919) is quite adequate, but still very simple. Nevertheless, the author presented a scheme of the mesenteries, and two photos of preserved and dissected material, which allows an adequate comparison with other species. Uchida (1979) moved this species to the genus Pachycerianthus and performed a very detailed redescription of the species based on specimens from Sagami Bay, Japan. This species occurs in an area with several other species of Ceriantharia but is apparently consistent with regard to its taxonomy. The co-occurrence of these species in Sagami Bay may be relevant in an evolutionary context with a focus on environmental niche differentiation among Ceriantharia species.

Type material.

Not found in this study, but the original description provided a graphic representation.