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The hydrozoan Olindias deigo was first described in 2019 from Japanese waters around the Ryūkyū Islands.
The initial description describes and documents the two life stages of the hydrozoan, the asexual polyp stage and a sexual medusa stage, with great photos.
The medusae of Olindias deigo occurred in winter and spring in shallow waters (from 3 to 10 m) in a number of subtropical temperature zones in the Ryukyu Archipelago in southern Japan.
The medusae rested on the sandy bottom or in areas with good slope and water movement during the day, while at night they drifted and swam by extending their tentacles, suggesting that the species appears to be nocturnal.
To date, no stinging incidents have been reported that can be attributed to Olindias deigo.
The manubrium of the species is bright red to orange, and the gonads are milky white.
The primary tentacles are pale black with purple and bright green tips and black bases, while the secondary tentacles are deep brown.
Details about its diet are not available, but it is assumed that Olindias deigo, like other species of the genus Olindias, is carnivorous, which is also supported by the presence of stinging cells.
Etymology
The name of the species is derived from the beautiful appearance of the hydrozoan in the medusa stage.
The Japanese name “deigo” refers to the Indian coral tree (Erythrina variegata), which is known as the “provincial flower” of Okinawa.
Reference sorce:
Toshino S, Tanimoto M, Minemizu R (2019)
Olindias deigo sp. nov., a new species (Hydrozoa, Trachylinae, Limnomedusae) from the Ryukyu Archipelago, southern Japan.
ZooKeys 900: 1-21. https://doi.org/10.3897/zookeys.900.38850
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The initial description describes and documents the two life stages of the hydrozoan, the asexual polyp stage and a sexual medusa stage, with great photos.
The medusae of Olindias deigo occurred in winter and spring in shallow waters (from 3 to 10 m) in a number of subtropical temperature zones in the Ryukyu Archipelago in southern Japan.
The medusae rested on the sandy bottom or in areas with good slope and water movement during the day, while at night they drifted and swam by extending their tentacles, suggesting that the species appears to be nocturnal.
To date, no stinging incidents have been reported that can be attributed to Olindias deigo.
The manubrium of the species is bright red to orange, and the gonads are milky white.
The primary tentacles are pale black with purple and bright green tips and black bases, while the secondary tentacles are deep brown.
Details about its diet are not available, but it is assumed that Olindias deigo, like other species of the genus Olindias, is carnivorous, which is also supported by the presence of stinging cells.
Etymology
The name of the species is derived from the beautiful appearance of the hydrozoan in the medusa stage.
The Japanese name “deigo” refers to the Indian coral tree (Erythrina variegata), which is known as the “provincial flower” of Okinawa.
Reference sorce:
Toshino S, Tanimoto M, Minemizu R (2019)
Olindias deigo sp. nov., a new species (Hydrozoa, Trachylinae, Limnomedusae) from the Ryukyu Archipelago, southern Japan.
ZooKeys 900: 1-21. https://doi.org/10.3897/zookeys.900.38850
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
