A new species of  Coriella, Coriella chernyshevi n. sp. (Entoprocta, Barentsiidae), with comments on the genera Coriella and Pedicellinopsis.
Here we describe a new species of colonial entoproct Coriella chernyshevi n. sp. from the Sea of Okhotsk, western Pacific Ocean, found at depths of 305-624 m. This is the first record of an entoproct species for the Sea of Okhotsk. Coriella chernyshevi is a large species with a zooid length of 6-7 mm. The calyx bears 32-34 tentacles. Zooids extend from a central stem formed by closely adjoined stolons. Only one other species of Coriella has been described previously, Coriella stolonata Kluge, 1946, from the Arctic Ocean, found at a depth of 45 m. Coriella chernyshevi and C. stolonata share a same rigid stem structure, but they differ in zooid size and tentacle number. The only other barentsiid that has been described as having a rigid central stem is Pedicellinopsis fruticosa Hincks, 1884. Based on the presence of a central stem in colonies, and similarities in structure of zooids and colonies, we suggest a close relationship between Coriella and Pedicellinopsis. Finally, an overview of both genera and all three species is given.
Faculty of Biology, Moscow State University, Moscow, 119991 Russia.; Email: borisanovaao@mail.ru.
Anastasia O
AO
Borisanova
Faculty of Bioengineering and Bioinformatics, Moscow State University, Moscow, 119991 Russia; Email: unknown.
Darya M
DM
Potanina
D000818:Animals; D007448:Invertebrates / Q000033:anatomy & histology / Q000145:classification*; D010140:Pacific Ocean; D010802:Phylogeny; D013045:Species Specificity