Published December 31, 2020
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Table 7 in Ceriantharia (Cnidaria) of the World: an annotated catalogue and key to species
Authors/Creators
- 1. Universidade Estadual Paulista (UNESP), FCL / Assis, Laboratorio de Evolucao e Diversidade Aquatica; LEDA, Departamento de Ciencias Biologicas, Assis, Brazil & Universidade Estadual Paulista (UNESP), Departamento de Zoologia, Instituto de Biociencias, Botucatu, SP, Brazil
- 2. University of The Ryukyus, Faculty of Science, Department of Biology, Chemistry, and Marine Science, MISE (Molecular Invertebrate Systematics and Ecology) Laboratory, Okinawa, Japan & University of The Ryukyus, Tropical Biosphere Research Center, Okinawa, Japan
- 3. Universidade de Sao Paulo (USP), Instituto de Biociencias, Sao Paulo, SP, Brazil
- 4. Universidade Estadual Paulista (UNESP), FCL / Assis, Laboratorio de Evolucao e Diversidade Aquatica; LEDA, Departamento de Ciencias Biologicas, Assis, Brazil & University of The Ryukyus, Faculty of Science, Department of Biology, Chemistry, and Marine Science, MISE (Molecular Invertebrate Systematics and Ecology) Laboratory, Okinawa, Japan
- 5. Instituto de Investigaciones Marinas y Costeras (Iimyc) CONICET; Facultad De Ciencias Exactas y Naturales Universidad Nacional de Mar Del Plata Funes 3250. 7600 Mar Del Plata, Argentina & Estacion Cientifica Coiba (Coiba-Aip), Clayton, Panama, Republica de Panama
- 6. Universidade de Sao Paulo (USP), Instituto de Biociencias, Sao Paulo, SP, Brazil & Universidade de Sao Paulo (USP), Centro de Biologia Marinha, Sao Sebastiao, SP, Brazil
Description
Table 7. Comparison of anatomical features of Arachnanthus species (after Stampar et al. 2018).
| A. australiae | A. bockii | A. oligopodus | A. sarsii | A. lilith | |
|---|---|---|---|---|---|
| Marginal tentacles | Up to 40 | Up to 30 | ~20 | Up to 35 | Up to 24 |
| Arrangement of labial tentacles | (0)1.11.11.11.11 | (0)1.11.11.11.11(?) | (0)1.11.11.11.11 | (0)1.11.11.11.11 | (0)3.12.31.23.23.12 |
| Length of actinopharynx | ~2/3 of gastric cavity | ~1/2 of gastric cavity | ~1/2 of gastric cavity | ~1/2 of gastric cavity | >1/2 of gastric cavity |
| Hyposulcus | ~1/2 size of stomodeum | ~1/2 size of stomodeum | ~2X size of stomodeum | <size of stomodeum | = size of stomodeum |
| Oral disc diameter | ~0.7 cm | - | - | ~1 cm | 0.5 cm |
| Mesentery attachment to actinopharynx | Broad, 12 mesenteries attached | Broad, 12 mesenteries attached | Narrow, 4 mesenteries attached | Broad, 6 mesenteries attached | Broad, 8 mesenteries attached |
| Directive mesenteries | = length of Actinopharynx | <length of Actinopharynx | > length of Actinopharynx | <length of Actinopharynx | <length of Actinopharynx |
| P(C)2 | Short, 1/2 of gastric cavity | Very short, 1/4 of gastric cavity | Short, 1/2 of gastric cavity | Long, 3/4 of gastric cavity | Long, 6/7 of gastric cavity, almost to aboral pole |
| P(C)3 | Very short, <1/4 of gastric cavity | Very short, <1/4 of gastric cavity | Short, ~1/2 of gastric cavity | Short, ~1/3 of gastric cavity | Short, 1/3 of gastric cavity |
| M1 | Almost to aboral pore | Almost to aboral pore | To aboral pore | Almost to aboral pore | To aboral pore |
| M3 | 4/5 of gastric cavity | Almost to aboral pore | 1/5 of gastric cavity | Almost to aboral pore | 3/4 of gastric cavity |
| Cnido-glandular tract of fertile mesenteries | Present (short?) | Present (short?) | Present | Present | Present |
| Cnido-glandular tract of B | Present (short?) | Present (short?) | Present (short?) | Present (short) | Present (short) |
| Acontioids | Only in M1, M2 and M3 | Only in M1, M2 and M3 | Only in M1 | Only in M1, M2 and M3 | Only in M3 and M4 |
Notes
Published as part of 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, pp. 1 in ZooKeys 952 on page 1, DOI: 10.3897/zookeys.952.50617
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Additional details
Identifiers
References
- Stampar, SN, El Didi, SO, Paulay, G, Berumen, ML, 2018. A new species of Arachnanthus from the Red Sea (Cnidaria, Ceriantharia). ZooKeys 748: 1 - 10, DOI: https://doi.org/10.3897/zookeys.748.22914