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Type: Article
Published: 2019-09-03
Page range: 191–205
Abstract views: 72
PDF downloaded: 2

Cinetorhynchus gabonensis, a new species of hinge-beak shrimp (Crustacea: Decapoda: Rhynchocinetidae) from the eastern Atlantic

Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic.
Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic
Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, PT-8005-139 Faro, Portugal
Crustacea Caridea Cinetorhynchus manningi Cinetorhynchus rigens colour pattern Gabon taxonomy


A new species of the rhynchocinetid genus Cinetorhynchus, C. gabonensis sp. n. from the Atlantic waters of Gabon, is described based on morphological and molecular comparisons and its distinctive colour pattern. This is the second known species of the genus in the eastern Atlantic, and the third species in the Atlantic as the whole. The new species is more closely related to the western Atlantic C. manningi, both having quadrispinose ambulatory dactyli (i.e. with unguis + 3 ventral spinules), but differs from the latter by the presence of an arthrobranch on the three anterior pereiopods (vs only on the first pereiopod in C. manningi). The branchial formula of the new species is consistent with most of the Indo-West Pacific congeners, and with the amphi-Atlantic C. rigens; the latter possessing trispinose ambulatory dactyli. Other distinctions of the new species from its congeners are in the carpal and meral spinulation of the ambulatory legs, and in the posterolateral and posteroventral armament of pleomeres IV and V. Cinetorhynchus gabonensis sp. n. differs from both known Atlantic congeners also by a specific colour pattern which is dense deep-red mottled with a pair of small white spots delineated by deep-red broad rings on the top of the third pleomere.



  1. Baeza, J.A., Bauer, R.T., Okuno, J. & Thiel, M. (2014) Molecular phylogeny of hinge-beak shrimps (Decapoda: Caridea: Rhynchocinetes and Cinetorhynchus) and allies: a formal test of familiar and generic monophyly using a multilocus phylogeny. Zoological Journal of the Linnean Society, 172, 426–450.

    Crandall, K.A. & Fitzpatrick, J.F. Jr. (1996) Crayfish molecular systematics: using a combination of procedures to estimate phylogeny. Systematic Biology, 45 (1), 1–26.

    De Grave, S., Anker, A., Dworschak, P.C., Clark, P.F. & Wirtz, P. (2017) An updated checklist of the marine Decapoda of Ascension Island, central Atlantic Ocean. Journal of the Marine Biological Association of the United Kingdom, 97 (4), 759770.

    De Grave, S., Pentcheff, N.D., Ahyong, S.T., Chan, T.-Y., Crandall, K.A., Dworschak, P.C., Felder, D.L., Feldmann, R.M., Fransen, C.H.J.M., Goulding, L.Y.D., Lemaitre, R., Low, M.E.Y., Martin, J.W., Ng, P.K.L., Schweitzer, C.E., Tan, S.H., Tshudy, D. & Wetzer, R. (2009) A classification of living and fossil genera of decapod crustaceans. The Raffles Bulletin of Zoology, 21 (Supplement), 1–109.

    De Grave, S., Wirtz, P., Brown, J. & Anker, A. (2019) On a collection of caridean shrimps (Decapoda, Caridea) from St. Helena, south-central Atlantic, with further records from Ascension Island. Crustaceana, 92 (7), 869–879.

    De Grave, S. & Wood, L. (2011) Further occurrences of tegumental scales in caridean shrimp (Crustacea: Decapoda: Caridea). Crustacean Research, 40, 41–50.

    de Melo, G.A.S. (2007) The family Rhynchocinetidae (Crustacea, Decapoda, Caridea) on the Brazilian coast. Revista Brasileira de Zoologia, 24 (1), 5463.

    Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32, 1792–1797.

    Geller, J., Meyer, C., Parker, M. & Hawk, H. (2013) Redesign of PCR primers for mitochondrial cytochrome c oxidase subunit I for marine invertebrates and application in all-taxa biotic surveys. Molecular Ecology Resources, 13, 851–861.

    Gordon, I. (1936) On the macruran genus Rhynchocinetes, with the description of a new species. Proceedings of the Zoological Society of London, 1936, 75–88.

    Holthuis, L.B. (1995) Notes on Indo-West Pacific Crustacea Decapoda III to IX. Zoologische Mededelingen, 69 (13), 139151.

    Horká, I., De Grave, S., Fransen, C.H.J.M., Petrusek, A. & Ďuriš, Z. (2016) Multiple host switching events shape the evolution of symbiotic palaemonid shrimps (Crustacea: Decapoda). Scientific Reports, 6, 26486.

    Kemp, S. (1925) Notes on Crustacea Decapoda in the Indian Museum. XVII On various Caridea. Records of the Indian Museum, 27, 249–342.

    Lanfear, R., Calcott, B., Ho, S.Y.W. & Guindon, S. (2012) PartitionFinder: combined selection of partitioning schemes and substitution models for phylogenetic analyses. Molecular Biology and Evolution, 29, 1695–1701.

    Letunic, I. & Bork, P. (2016) Interactive tree of life (iTOL) v3: an online tool for the display and annotation of phylogenetic and other trees. Nucleic Acids Research, 44 (W1), 242–245. [W242–245]

    Mathews, L.M., Schubart, C.D., Neigel, J.E. & Felder, D.L. (2002) Genetic, ecological, and behavioural divergence between two sibling snapping shrimp species (Crustacea: Decapoda: Alpheus). Molecular Ecology, 11, 1427–1437.

    Menut, T., Bérenger, L., Wirtz, P., Prat, M., Roquefort, C., Ducrocq, M. & Louisy, P. (2018) Exploration naturaliste sous-marine des petits fonds rocheux du Cap Santa Clara au Cap Esterias, Province de l’Estuaire, Gabon: les poissons marins. Les cahiers de la foundation Biotope, 21, 1–51 + Annexes.

    Miller, M.A., Pfeiffer, W. & Schwartz, T. (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. Proceedings of the Gateway Computing Environments Workshop, New Orleans, Los Angeles, 14 November 2010, 1–8.

    Okuno, J. (1996) Cinetorhynchus manningi, a new shrimp (Crustacea: Decapoda: Caridea: Rhynchocinetidae) from the western Atlantic. Proceedings of the Biological Society of Washington, 109, 725–730.

    Okuno, J. (1997) Crustacea Decapoda: Review on the genus Cinetorhynchus Holthuis, 1995 from the Indo-West Pacific (Caridea: Rhynchocinetidae). In: Richer de Forges, B. (Ed.), Les fonds meubles des lagons de Nouvelle-Calédonie (Sédimentologie, Benthos). Etudes & Thèses. Vol. 3. ORSTOM, Paris, pp. 31–58.

    Okuno, J. (2009) Cinetorhynchus brucei, a new species of shrimp (Decapoda, Caridea, Rhynchocinetidae) from the Ryukyu Islands, Japan. Crustaceana, 82, 939–949.

    Okuno, J. & Hoover, J.P. (1998) Cinetorhynchus hawaiiensis, a new shrimp forming a cryptic species pair with C. reticulatus Okuno, 1997, and new records of three congeneric species (Crustacea: Decapoda: Rhynchocinetidae). Natural History Research, 5, 31–42.

    Okuno, J. & Tachikawa, H. (1997) Cinetorhynchus fasciatus, a new shrimp from the western and central Pacific (Decapoda: Caridea: Rhynchocinetidae). Crustacean Research, 26, 16–25.

    Ortmann, A. (1890) Die Decapoden-Krebse des Strassburger Museums, mit besonderer berücksichtigung der von Herrn Dr. Döderlein bei Japan und bei den Liu-Kiu-Inseln gesammelten und z. Z. im Strassburger Museum aufbewahrten Formen. I. Theil. Die Unterordnung Natantia (Boas) (Abtheilungen: Penaeidae und Eucyphidea=Caridae der Autoren). Zoologische Jahrbücher. Abtheilung für Systematik, Geographie und Biologie der Thiere, 5, 437–542., pls. 36–37.

    Poupin, J. (2018) Les Crustacés décapodes des Petites Antilles, avec de nouvelles observations pour Saint Martin, la Guadeloupe et la Martinique. In: Collection Patrimoines Naturels. Vol. 77. Muséum national d’Histoire naturelle, Paris, pp. 1–264.

    Ronquist, F., Teslenko, M., Van Der Mark, P., Ayres, D.L., Darling, A., Höhna, S., Larget, B., Liu, L., Suchard, M.A. & Huelsenbeck, J.P. (2012) MrBayes 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology, 61, 539–542.

    Stamatakis, A. (2014) RAxML Version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies. Bioinformatics, 30 (9), 1312–1313.

    Talavera, G. & Castresana, J. (2007) Improvement of phylogenies after removing divergent and ambiguously aligned blocks from protein sequence alignments. Systematic Biology, 56, 564–577.

    Tamura, K., Stecher, G., Peterson, D., Filipski, A. & Kumar, S. (2013) MEGA6: Molecular Evolutionary Genetics Analysis version 6.0. Molecular Biology and Evolution, 30, 2725–2729.

    Vaidya, G., Lohman, D.J. & Meier, R. (2011) SequenceMatrix: concatenation software for the fast assembly of multigene datasets with character set and codon information. Cladistics, 27, 171–180.

    Wirtz, P. (2018) New records of marine invertebrates from São Tomé and Príncipe, eastern Atlantic Ocean. Arquipelago – Life and Marine Sciences, 35, 4146.

    Xia, X. (2018) DAMBE7: New and improved tools for data analysis in molecular biology and evolution. Molecular Biology and Evolution, 35, 1550–1552.

    Xia, X., Xie, Z., Salemi, M., Chen, L. & Wang, Y. (2003) An index of substitution saturation and its application. Molecular Phylogenetics and Evolution, 26, 1–7.