Obelia oxydentata Stechow, 1914
publication ID |
https://doi.org/ 10.3897/BDJ.12.e130248 |
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https://doi.org/10.5281/zenodo.13806358 |
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https://treatment.plazi.org/id/AEC898C7-BC71-5EA0-B0D9-1AE46C50F28D |
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Obelia oxydentata Stechow, 1914 |
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Obelia oxydentata Stechow, 1914 View in CoL
Materials
Type status: Other material. Location: locality: UABCS Pichilingue ; minimumDepthInMeters: 0.0; maximumDepthInMeters: 1.0; Event: year: 2021; month: 7; day: 15; habitat: middle and apical macroalgae regions; Record Level: dataGeneralizations: 28 ° C; 36 PSU
Notes
Fig. 6 View Figure 6 f, Fig. 7 View Figure 7
Type locality. United States: Virgin Islands, St. Thomas, Charlotte Amalie ( Stechow 1914).
Detailed description in Stechow (1914).
Taxonomic status. Accepted. AphiaID 766210.
Remarks. Colony morphology and size support evidence that this species differs from Obelia bidentata Clark, 1875 . Previous studies have discussed the reason for the recognition of the species, supporting the correct identification of the species ( Calder 2013, Calder 2019, Calder et al. 2019). This species is 1–60 mm tall, with predominant sizes from 1 to 10 mm ( Calder et al. 2019, Calder 2020, Calder et al. 2021). The species has been recorded in other localities of the Pacific: Coconut Island Reef, Hawaii; Salinas Yacht Club, Ecuador ( Calder 2020, Calder et al. 2021); and Oaxaca, Mexico ( Ramos-Morales et al. 2024). However, in this last record, the number of cusps (7-10 vs. 15-20) differs from the original description and further descriptions (cf. Stechow (1914), Calder et al. (2019), Calder (2020), Calder et al. (2021), Ramos-Morales et al. (2024), this study) and, in fig. 3 g of Ramos-Morales et al. (2024), the cuspids are unclear.
Diagnosis
Colonies monosiphonic, erect from 1-4 mm. Exoskeleton thin. Hydrothecal pedicel unbranched with a single hydrotheca at the distal end. Pedicel with 4-6 annulations (0.1- 0.05 mm length); branches arising from curved and short lateral apophysis. Hydrothecae (0.2 mm wide) straight to the slightly oblique diaphragm and bi-mucronate marginal cusps (16-20 in total). Cusps are slightly rounded, with deep, rounded spaces between each other, alternately differing slightly in depth. Without gonophores.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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