A new species of the Cymbasoma longispinosum species-group (Copepoda: Monstrilloida) from Belize, western Caribbean


  • Eduardo Suárez-Morales ECOSUR, Unidad Chetumal, CONSERVACION DE LA BIODIVERSIDAD, Av. del Centenario Km. 5.5 Chetumal, Quintana Roo, México. C.P. 77900 http://orcid.org/0000-0003-2051-8707
  • Lourdes Vásquez-Yeomans El Colegio de la Frontera Sur (ECOSUR) Unidad Chetumal
  • Leomir Santoya Sarteneja Alliance for Conservation and Development (SACD),Belize



Palabras clave:

Copepods, Zooplankton, Cymbasoma cf. longispinosum, Crustacean taxonomy, Belize, Western Caribbean Sea


Cymbasoma belizense sp. n. is described from an adult female collected during a zooplankton survey of the Corozal Bay Wildlife Sanctuary (CBWS), adjacent to Chetumal Bay, a large binational embayment on the northwestern Caribbean Basin. The new species is a member of the Cymbasoma longispinosum species-group; it resembles C. chelemense Suárez-Morales & Escamilla, 1997 from the Gulf of Mexico and C. jinigudira Suárez-Morales & McKinnon, 2014 from Australia. This is the eighth nominal species known in this species-group, the second one recorded from the Caribbean Sea Basin, and the first one in the Belizean coast. The new species is distinguished by a combination of characters, including the body proportions, the structure and armature of the fifth legs, the cephalic
ornamentation, with a fringe of faint cuticular striae, the relative length and bifurcation point of the ovigerous spines, and details of the antennule armature. Comparative comments and data including the distribution and taxonomical characters of members of this species-group are presented. Records of this nominal species from different geographic areas should be revised carefully because they could represent undescribed species. A key to the females of the currently known species of this group also provided.

Biografía del autor/a

Eduardo Suárez-Morales, ECOSUR, Unidad Chetumal, CONSERVACION DE LA BIODIVERSIDAD, Av. del Centenario Km. 5.5 Chetumal, Quintana Roo, México. C.P. 77900

Investigador Titular D del Departamento CONSERVACION DE LA BIODIVERSIDAD

Lourdes Vásquez-Yeomans, El Colegio de la Frontera Sur (ECOSUR) Unidad Chetumal

Depto. Ecología y Sistemática Acuática, Investigadora Asociada

Leomir Santoya, Sarteneja Alliance for Conservation and Development (SACD),Belize

Researcher. Sarteneja Alliance for Conservation and Development (SACD),Belize


Bourne, G. C. (1890). Notes on the genus Monstrilla, Dana. Quarterly Journal of Microscopical Science, 30, 565–578.

Boxshall, G. A., & Halsey, S. H. (2004). An introduction to copepod diversity. London: The Ray Society.

Chang, C.Y. (2014). Two new records of monstrilloid copepods (Crustacea) from Korea. Animal Systematics, Evolution and Diversity, 30, 206–214.

Dakin W. J., & Colefax, A.N. (1940). The plankton of the Australian coastal waters off New South Wales. Pt.1.Publications of the University of Sydney, Department of Zoology Monographs1:1–215.

Dias, C. O. (1996). Monstrilloida (Copepoda) off the Brazilian coast. Hydrobiologia, 324, 253–256.

Dorado-Roncancio, E. F., & Dorado-Roncancio, J. (2018). First record of the copepod Cymbasoma chelemense (Copepoda: Monstrilloida) in the Colombian Caribbean Sea. Boletín del Instituto de Investigaciones Marinas y Costeras de Colombia, 47, 157–163.

Duarte, A. K. (1999). Ocorrência de Monstrilloida (Copepoda) em águas costeiras do Sul do Brasil. Nauplius, 7, 201–202.

Dias, C. O., & Bonecker, S. L.(2007). New records of Monstrilloida Sars, 1901 (Crustacea, Copepoda) on the Brazilian northeastern coast. Biota Neotropica, 7, 1–5.

Dolgopolskaya, M. A. (1948). K faune Monstrillidae Chernogo morya. Trudy Zoologicheskogo Instituta. Akademii Nauk SSSR, 7, 177–183. (in Russian)

Giesbrecht, W. (1893). Systematik und Faunistik der pelagischen Copepoden desGolfes von Neapel und der angrenzenden Meeres-Abschnitte. Fauna und Flora desGolfes von Neapel und der angrenzenden Meeres-Abschnitte herausgegeben von derZoologischen Station zu Neapel. XIX [1892]. Berlin: R. Friedländer & Sohn.

Grygier, M. J. (1994). Nomenclature, redescription and new record of Cymbasoma morii Sekiguchi, 1982 (Monstrilloida). Hydrobiologia, 292/293, 23–29.

Grygier, M. J. (1995). Annotated chronological bibliography of Monstrilloida (Crustacea: Copepoda). Galaxea, 12, 1–82.

Grygier, M. J., & Ohtsuka, S. (1995). SEM observation of the nauplius of Monstrilla hamatapex, new species, from Japan and an example of upgraded descriptive standards for monstrilloid copepods. Journal of Crustacean Biology, 15, 703–719.

Grygier, M. J., & Ohtsuka S.( 2008). A new genus of monstrilloid copepods (Crustacea) with anteriorly pointing ovigerous spines and related adaptations for subthoracic brooding. Zoological Journal of the Linnean Society. London, 152, 459–506.

Huys, R. & Boxshall, G. A. (1991). Copepod evolution. London: The Ray Society.

Huys, R., Llewellyn-Hughes, J., Conroy-Dalton, S., Olson, P. D., Spinks, J. N., & Johnston, D. A. (2007). Extraordinary host switching in siphonostomatoid copepods and the demise of the Monstrilloida: Integrating molecular data, ontogeny and antennulary morphology. Molecular Phylogenetics and Evolution, 43, 368–378. https://doi.org/10.1016/j.ympev.2007.02.004

Isaac, M. J., 1975. Copepoda, sub-order: Monstrilloida. Fiches pour l’. Identification du Zooplancton, 144/145, 1–10.

Jeon, D., Lee, W. & Soh, H.Y. (2018). New genus and two new species of monstrilloid copepods (Copepoda: Monstrillidae): integrating morphological, molecular phylogenetic, and ecological evidence. Journal of Crustacean Biology, 38(1), 45–65., https://doi.org/10.1093/jcbiol/rux095

Leite N. R.,. Pereira, L. C. C F. Abrunhosa, F., Pires, M. A. B., & R. M. D. Costa( 2010). Occurrence of Cymbasoma longispinosum

Mageed, A. A. A. (2010). Cymbasoma janetae n. sp., a new monstrilloid (Copepoda, Monstrilloida) from the Gulf of Aqaba (Red Sea, Egypt). Crustaceana ,83, 513–523.

Martin Thompson, P. K. (1973). Occurrence of Cymbasoma longispinosum (Copepoda: Monstrilloida) from the Indian Seas. Journal of the Marine Biological Association of India, 15, 616–620.

Razouls, C., de Bovée, F., Kouwenberg, J., & Desreumaux, N. (2005-2014). Diversity and geographic distribution of marine planktonic copepods. Available at http://copepodes.obs-banyuls.fr/en [accessed January 31, 2014]

Rose, M. (1933). Copépodes pélagiques. Faune de France, 26, 1–374.

Sars, G. O. (1921). An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. Copepoda Monstrilloida and Notodelphyoida. Bergen: The Bergen Museum.

Suárez-Morales, E. (2001). An aggregation of monstrilloid copepods in a western Caribbean reef area: ecological and conceptual implications. Crustaceana, 74, 689–696.

Suárez-Morales, E. (2011). Diversity of the Monstrilloida (Crustacea: Copepoda). PLoS ONE, 6(8): e22915. Doi:10.1371/journal.pone.0022915

Suárez-Morales, E. (2017). Monstrilloid copepods: the best of three worlds. Bulletin of the Southern California Academy of Sciences, 107,: 92–103.

Suárez-Morales, E., & Castellanos-Osorio, I. (2019). A new species of Monstrilla (Copepoda, Monstrilloida) from the plankton of a bay system of the northwestern Caribbean, with a key to species. Zookeys, 876, 111–123. https://doi.org/10.3897/zookeys.876.38400

Suárez-Morales, E. & Dias, C. (2001) Taxonomic report of some monstrilloids (Copepoda: Monstrilloida) from Brazil with description of four new species. Bulletin de l’Institut Royal des Sciences Naturelles d’ Belgique, Biologie, 71, 65–81.

Suárez-Morales, E. Dias, C. O., & Bonecker, S.L. (2020). Discovery of the female of Cymbasoma rochai Suárez-Morales & Dias, 2001 (Copepoda, Monstrilloida, Monstrillidae), the first Brazilian member of the C. longispinosum species-group. Crustaceana, 93 (in press).

Suárez-Morales, E. & Escamilla-Sánchez, J. B. (1997). An undescribed monstrilloid copepod (Copepoda: Monstrilloida) from the northern Yucatán Peninsula, Mexico. Bulletin of Marine Science, 61,539–547.

Suárez-Morales, E., Harris, L. Ferrari, F. D., & Gasca, R. (2014). Late postnaupliar development of Monstrilla sp. (Copepoda: Monstrilloida), a protelean endoparasite of benthic polychaetes. Invertebrate Reproduction and Development, 58, 60–73. https://doi.org/10.1080/07924259.2013.816787

Suárez-Morales, E., & McKinnon, A.D.( 2014). The Australian Monstrilloida (Crustacea: Copepoda) I. Monstrillopsis Sars, Maemonstrilla Grygier & Ohtsuka, and Australomonstrillopsis gen. nov. Zootaxa, 3779,301–340.

Suárez-Morales, E., & Palomares-García, R. (1999). Cymbasoma californiense, a new monstrilloid (Crustacea: Copepoda: Monstrilloida) from Baja California, Mexico. Proceedings of the Biological Society of Washington, 112, 189–198.

Suárez-Morales, E., Paiva Scardua, M., & Da Silva, P. M. (2010). Occurrence and histo-pathological effects of Monstrilla sp. (Copepoda: Monstrilloida) and other parasites in the brown mussel Perna perna from Brazil. Journal of the Marine Biological Association of the United Kingdom, 90, 953–958.

Biological Association of the United Kingdom, 90, 953–958. https://doi.org/10.1017/S0025315409991391

Üstün F., Terbiyik, K. T. & Suárez-Morales, E. (2014). A new species of Cymbasoma (Copepoda, Monstrilloida) from the northern coast of Turkey (Black Sea) with comments on the C. longispinosum species-group. Crustaceana, 87: 1393–1410.

Wilson, C. B.(1950). Contributions to the biology of the Philippine Archipelago and adjacent regions. Copepods gathered by the United States Fisheries Steamer “Albatross” from 1887 to 1909, chiefly in the Pacific Ocean. U.S. National Museum Bulletin, 100(14, 4):141– 441.