Abstract
One male and two female specimens of an undescribed species of the heterogeneous hermit crab genus Pagurus Fabricius, 1775, were found during the study of the collections of the Oceanographic Institute of Cádiz, containing specimens from African and European coasts collected during the scientific cruises carried out between in years 2008–2013. The new species is named Pagurus pectinidactylus n. sp., in reference to the presence of a well-developed toothless pectinate masticatory border in the dactylus of the left cheliped, composed by a row of tightly placed bristles forming a brush-like structure. The new species is compared to morphologically similar congeners, especially those that are genetically closest. Molecular phylogenetic analyses support the morphological delimitation, with P. pectinidactylus n. sp. forming a separate clade, more closely related to a group of South African species belonging to the Pagurus anachoretus group.
References
Almón, B., Cuesta, J.A. & García-Raso, J.E. (2022) Two New Hermit Crab Species of Diogenes (Crustacea: Decapoda: Diogenidae) from Atlanto–Mediterranean Coasts of Iberian Peninsula: Poleward Migrants or Merely Overlooked Indigenous Species? Ecology and Evolution, 12 (5), e8844. https://doi.org/10.1002/ece3.8844
Araújo, R. & Wirtz, P. (2015) The decapod crustaceans of Madeira Island—an annotated checklist (Crustacea, Decapoda). Spixiana, 38 (2), 205–218.
Balss, H. (1911) Neue Paguriden aus den Ausbeuten der deutschen Tiefsee-Expedition “Valdivia” und der japanischen Expedition Prof. Dofleins. Zoologischer Anzeiger, 38(1), 1–9.
Balss, H. (1921) Crustacea VI: Decapoda Anomura (Paguridea) und Brachyura (Dromiacea bis Brachygnatha). In: Michaelsen, W (Ed.), Beiträge zur Kenntnis der Meeresfauna Westafrikas. Band III. Lieferung 2. L. Friederichsen & Co., Hamburg, pp. 37–67.
Barnard, K.H. (1947) Descriptions of new species of South African decapod Crustacea, with notes on the synonymy and new records. Annals of the South African Museum, 12, 361–392. https://doi.org/10.1080/00222934608654562
Bell, T. (1844–1853) A History of the British Stalk-Eyed Crustacea. John van Voorst, London, lxv + 386 pp. https://doi.org/10.5962/bhl.title.3717
Bouvier, E.-L. (1896) Sur un Pagurien nouveau (Eupagurus Chevreuxi) de la Mediterranée. Bulletin du Muséum d’Histoire Naturelle, 2, 95–100.
Chevreux, E. & Bouvier, E.L. (1892) Voyage de la goèlette Melita aux Canaries et au Sénégal. Note préliminaire sur les paguriens. Bulletin de la Société Zoologique de France, 16, 252–256.
Cuesta, J.A., Almón, B., Pérez-Dieste, J., Trigo, J.E. & Bañón, R. (2016) Role of Ships’ hull fouling and tropicalization process on European carcinofauna: new records in Galician waters (NW Spain)». Biological Invasions, 18 (3), 619–630. https://doi.org/10.1007/s10530-015-1034-9
De Matos-Pita, S.S. & Ramil, F. (2015) Hermit crabs (Decapoda: Crustacea) from deep Mauritanian waters (NW Africa) with the description of a new species. Zootaxa, 3926 (2), 151–190. https://doi.org/10.11646/zootaxa.3926.2.1
Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Research, 32, 1792–1797. https://doi.org/10.1093/nar/gkh340
Estoup, A., Largiadèr, C.R., Perrot, E. & Chourrout, D. (1996) Rapid one tube DNA extraction for reliable PCR detection of fish polymorphic marker and transgenes. Molecular Marine Biology and Biotechnology, 5, 295–298.
Fabricius, J.C. (1775) Systema Entomologiae, sistens Insectorum Classes, Ordines, Genera, Species, adjectis Sysnonymis, Locis, Descriptionibus, Observationibus. Kortii, Flensburgi et Lipsiae, 832 pp. https://doi.org/10.5962/bhl.title.36510
Forest, J. (1952) Notes préliminaires sur les Paguridae (Crust. Décap.) des côtes occidentales d’Afrique. III. Sur un Eupagurus nouveau de la région de Dakar, E. souriei sp. nov. Bulletin du Muséum National d’Histoire Naturelle, Series 2, 24, 355–359.
Forest, J. (1955) Crustacés Décapodes, Pagurides. Expédition océanographique Belge dans les eaux côtiéres africaines de l’Atlantique Sud (1948-1949). Résultats scientifique, 3 (4), 23–147.
Forest, J. (1956) Sur une collection de Paguridae de la côte de l’Or. Proceedings of the Zoological Society of London, 126 (3), 335–367. https://doi.org/10.1111/j.1096-3642.1956.tb00442.x
Forest, J. (1958) Les Crustacés Anomoures du Musée royal du Congo belge. Revue de Zoologie et de Botanique Africaines, 58, 144–168.
Forest, J. (1961) Pagurides de l’Afrique occidentale. Scientific Results of the Danish Expedition to the coasts of tropical West Africa 1945–1946. Atlantide Report, 6, 203–250.
Forest, J., 1966. Crustacés Décapodes: Pagurides. In: Campagne de la Calypso dans le Golfe de Guinée et aux Iles Principe, São Tomé‚ et Annobon (1956). Annales de l’Institut Océanographique de Monaco, 44, pp. 125–172.
Forest J. (1978) Sur deux pagurides nouveaux de l’Atlantique tropical africain: Pagurus laurentae et Paguristes cyanops spp. nov. Bulletin du Museìum national d’histoire naturelle, Paris, 3e série Zoologie, 356, 525–538.
Forest, J. & Ngoc-Ho, N. (1992) Desription de Pagurus dartevellei (Forest, 1958) (Crustacea, Decapoda, Paguridae). Bulletin du Muséum national d’histoire naturelle Section A Zoologie, biologie et écologie animales, 14, 217–227.
Froglia, C. (2010) Crustacea, Malacostraca, Decapoda. Biologia Marina Mediterranea 17 (Supplement 1), 519–534.
García-Isarch, E. & Muñoz, I. (2015) Biodiversity and biogeography of decapods crustaceans in the Canary Current Large Marine Ecosystem. In: Valdés, L. & Déniz-González, I. (Eds.), Oceanographic and biological features in the Canary Current Large Marine Ecosystem. IOC Technical Series No. 115. IOCUNESCO, Paris, pp. 257–271. [http://hdl.handle.net/1834/9193]
García-Muñoz, J.E., Cuesta, J.A. & García-Raso, J.E. (2014) Taxonomic study of the Pagurus forbesii “complex” (Crustacea: Decapoda: Paguridae). Description of Pagurus pseudosculptimanus sp. nov. from Alborán Sea (Southern Spain, Western Mediterranean Sea). Zootaxa, 3753 (1), 25–46. https://doi.org/10.11646/zootaxa.3753.1.3.
García-Raso, J.E., Salmerón, F., Baro, J., Marina, P. & Abelló, P. (2014) The tropical African hermit crab Pagurus mbizi (Crustacea, Decapoda, Paguridae) in the Western Mediterranean Sea: a new alien species or filling gaps in the knowledge of the distribution?. Mediterranean Marine Science, 15 (1), 172–178. https://doi.org/10.12681/mms.530
González, J.A. (2018) Checklists of Crustacea Decapoda from the Canary and Cape Verde Islands, with an assessment of Macaronesian and Cape Verde biogeographic marine ecoregions. Zootaxa, 4413 (3), 401–448. https://doi.org/10.11646/zootaxa.4413.3.1
González-Ortegón, E., Jenkins, S., Galil, B.S., Drake, P. & Cuesta, J.A. (2020) Accelerated invasion of decapod crustaceans in the southernmost point of the Atlantic coast of Europe: A non-natives’ hot spot? Biological Invasions, 22, 3487–3492. https://doi.org/10.1007/s10530-020-02345-y
Grant, F.E. & McCulloch, A.R. (1906) On a collection of Crustacea from the Port Curtis district, Queensland. Proceedings of the Linnean Society of New South Wales, 31 (1), 2–53.
Haig, J. & Ball, E.E. (1988) Hermit crabs from north Australian and eastern Indonesian waters (Crustacea Decapoda: Anomura: Paguroidea) collected during the 1975 Alpha Helix Expedition. Records of the Australian Museum, 40, 151–196. https://doi.org/10.3853/j.0067-1975.40.1988.153
Hall, T. (1999) BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic Acids Symposium Series, 41, 95–98.
Herbst, J.F.W. (1791–1796) Versuch einer Naturgeschichte der Krabben und Krebse nebst einer systematischen Beschreibung ihrer verschiedenen Arten. Zweyter Band. Mit XXV Kupfer-Tafeln und Register. Krebse. Gottlieb August Lange, Berlin und Stralsund, viii + 225 + [1] pp., 25 pls. https://doi.org/10.5962/bhl.title.64679
Ingle, R. (1993) Hermit crabs of the Northeastern Atlantic Ocean and Mediterranean Sea: an illustrated key. Chapman & Hall Identification Guides. Vol. 4. Chapman & Hall, London, VI + 495 pp. [ISBN 0-412-49010-2]
Komai, T. & Osawa, M. (2001) A new distinctive species of pagurid hermit crab (Crustacea: Decapoda: Anomura) from Japan. Zoological Science, 18, 1291–1301. https://doi.org/10.2108/zsj.18.1291
Komai, T. & Rahayu, D.L. (2004) Redescription of Pagurus moluccensis Haig & Ball, 1988, with description of a new species of Pagurus from Indonesia, and taxonomic notes on the Pagurus anachoretus group (Crustacea: Decapoda: Anomura: Paguridae). Raffles Bulletin of Zoology, 52, 183–200.
Kröyer, H. (1838) Grönlands Amfipoder. Det Konigelige Danske Videnskabernes Selskabs Naturvidenskabelige og Mathematiske Afhandlinger, Series 4, 7, 229–326, pls. 1–4. https://doi.org/10.5962/bhl.title.64221
Kumar, S., Stecher, G., Li, M., Knyaz, C. & Tamura, K. (2018) MEGA X: Molecular Evolutionary Genetics Analysis across computing platforms. Molecular Biology and Evolution, 35, 1547–1549. https://doi.org/10.1093/molbev/msy096
Landschoff, J., Komai, T., du Plessis, A., Gouws, G. & Griffiths, C.L. (2018) MicroCT imaging applied to description of a new species of Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguridae), with selection of three-dimensional type data. PLoS ONE, 13 (9), e0203107. https://doi.org/10.1371/journal.pone.0203107
Leach, W.E. (1815) Malacostraca Podophthalma Britanniæ; or descriptions of such British species of the Linnean genus Cancer as have their eyes elevated on footstalks. No. VI. 1 November 1815. James Sowerby, London, 3 pls., 6 un-numbered text pages.
Lemaitre, R. & McLaughlin, P.A. (2022) World Paguroidea & Lomisoidea Database. Pagurus JC Fabricius, 1775. Accessed through: World Register of Marine Species. Available from: https://marinespecies.org/aphia.php?p=taxdetails&id=106854 (accessed 19 April 2022)
Linnaeus, C. (1758) Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata. Vol. 1. 10th Revised Edition. Laurentius Salvius, Holmiae, 824 pp. Available from: https://biodiversitylibrary.org/page/726886 (accessed 31 October 2022) https://doi.org/10.5962/bhl.title.542
McLaughlin, P.A. (2002) A review of the hermit crab (Decapoda: Anomura: Paguridea) fauna of southern Thailand, with particular emphasis on the Andaman Sea, and descriptions of three new species. Phuket Marine Biological Center Special Publication, 23, 385–460.
McLaughlin, P.A. (2003) Illustrated keys to families and genera of the superfamily Paguroidea (Crustacea: Decapoda: Anomura), with diagnoses of genera of Paguridae. Memoirs of Museum Victoria, 60, 111–144. https://doi.org/10.24199/j.mmv.2003.60.16
McLaughlin, P.A. & Forest, J. (1999) Hermit crabs of the genus Pagurus Fabricius (Crustacea, Decapoda, Paguridae) from south-eastern South Africa. Annals of the South African Museum, 105, 297–344.
Menna, M., Faye, S., Poulain, P.M., Centurioni, L., Lazar, A., Gaye, A.T., Sow, B. & Dominique, D. (2016) Upwelling features off the coast of north-western Africa in 2009–2013. Bollettino Di Geofisica Teorica Ed Applicata, 57, 71–86. https://doi.org/10.4430/bgta0164
Milne-Edwards, A. & Bouvier, E.L. (1892) Observations préliminaires sur les paguriens recueillis par les expéditions du Travailleur et du Talisman. Annales des Sciences Naturelles, Zoologie et Paléontologie, Series 7, 13, 185–226.
Morgan, G.J. (1990) A collection of Thalassinidea, Anomura and Brachyura (Crustacea: Decapoda) from the Kimberley region of Northwestern Australia. Zoologische Verhandelingen, 265, 1–90.
Muñoz, I., Serrano, M. & García, E. (2022) Colección de Crustáceos Marinos (CRUST-IEOCD). v1.28. Instituto Español de Oceanografía. Centro Oceanográfico de Cádiz (CSIC). Dataset/Occurrence. https://ipt.gbif.es/resource?r=ccde-ieocd&v=1.28 (accessed 31 October 2022)
Neumann, H., Knebelsberger, T., Barco, A. & Haslob, H. (2022) First record and spread of the long-wristed hermit crab Pagurus longicarpus Say, 1817 in the North Frisian Wadden Sea (Germany). BioInvasions Records, 11 (2), 482–494. https://doi.org/10.3391/bir.2022.11.2.21
Pelegrí, J.L., Peña-Izquierdo, J., Machín, F., Meiners, C., Presas-Navarro, C. (2017) Oceanography of the Cape Verde Basin and Mauritanian Slope Waters. In: Ramos, A., Ramil, F. & Sanz, J. (Eds.), Deep-Sea Ecosystems Off Mauritania. Springer, Dordrecht, pp. pp 119–153. https://doi.org/10.1007/978-94-024-1023-5_3
Pocock, R.I. (1889) Crustacea. In: Report of a deep-sea trawling cruise off the S.W. coast of Ireland, under the direction of Rev. W. Spotswood Green. Annals and Magazine of Natural History, Series 6, 4, pp. 425–431. https://doi.org/10.1080/00222938909460559
Posada, D. & Buckley, T.R. (2004) Model selection and model averaging in phylogenetics: Advantages of Akaike information criterion and Bayesian approaches over likelihood ratio tests. Systematic Biology, 53 (5), 793–808. https://doi.org/10.1080/10635150490522304
Risso, A. (1826–1827) Histoire naturelle des principales productions de l’Europe Méridionale et particulièrement de celles des environs de Nice et des Alpes Maritimes. 3 (XVI). F.G. Levrault, Paris, 480 pp., 14 pls. https://doi.org/10.5962/bhl.title.58984
Sankolli, K.N. (1962) On a new species of hermit crab Pagurus kulkarnii sp. nov. (Anomura: Paguridae). Journal of the Zoological Society of India, 13, 136–142.
Say, T. (1817–1818) An account of the Crustacea of the United States. Journal of the Academy of Natural Sciences of Philadelphia, 1 (1 & 2), 57–63, 65–80 (pl.), 97–101, 155–169 (1817) & 235–253 + 313–319 + 374–401 + 423–441 (1818).
Schubart, C.D. & Huber, M.G.J. (2006) Genetic comparisons of German populations of the stone crayfish, Austropotamobius torrentium (Crustacea: Astacidae). Bulletin Français de la Pêche et de la Pisciculture, 380–381 + 1019–1028. https://doi.org/10.1051/kmae:2006008
Sultana, Z., Isaac A.B. & Asakura, A. (2022) Diversity and Molecular Phylogeny of Pagurid Hermit Crabs (Anomura: Paguridae: Pagurus). Diversity, 14 (2), 141. https://doi.org/10.3390/d14020141
Teoh, H.W., Hussein, M.A.S. & Chong, V.C. (2014) Influence of habitat heterogeneity on the assemblages and shell use of hermit crabs (Anomura: Diogenidae). Zoological Studies, 53, 67. https://doi.org/10.1186/s40555-014-0067-6
Udekem d’Acoz, C. (1999) Inventaire et distribution des crustacés décapodes de l’Atlantique nord-oriental, de la Méditerranée et des eaux continentales adjacentes au nord de 25°N. Collection Patrimoines Naturels 40. Muséum national d’Histoire naturelle, Service du Patrimoine Naturel, Paris, x + 383 pp.