Tiaricodon orientalis sp. nov., a new species (Hydrozoa, Anthoathecata, Halimedusidae) from Sagami Bay, eastern Japan
2021年05月
Plankton & Benthos Research 16（2）P 129–138（日本プランクトン学会・日本ベントス学会）
Gaku Yamamoto 1 ＆ Sho Toshino 2
1 Enoshima Aquarium
2 Kuroshio Biological Research Foundation
Received 19 June 2020; Accepted 8 February 2021
Abstract: A new hydromedusa belonging to the order Anthoathecata is reported from Sagami Bay, eastern Japan.
Tiaricodon orientalis sp. nov. can be distinguished from other Tiaricodon species by the umbrella size of the medusa, manubrium length, interradial peaks in the subumbrella, and a red band on the upper part of the manubrium. A comparative table of the primary diagnostic characters of the genus is provided. Our morphological and molecular phylogenetic analyses suggest that Tiaricodon from China is not Tiaricodon coeruleus but Tiaricodon orientalis.
