Abstract
We describe three new species of hermit crab of the pagurid genera, Catapagurus A. Milne-Edwards, 1880, Nematopagurus A. Milne-Edwards & Bouvier, 1892 and Pagurixus Melin, 1939, on the basis of material collected during the scientific cruise to the Northern Mariana Islands conducted by the U.S. National Oceanographic and Atmospheric Administration (NOAA) in 2015. Catapagurus tenuilamina n. sp., referred to the C. ensifer Henderson, 1893 species group, appears close to C. granulatus Edmondson, 1951, but differs from the latter in the more slender ultimate article of the antennular peduncle, more slender dactyli of pereopods 2 and 3, and the possession of two dorsal subdistal spines in the meri of the pereopods. Nematopagurus marianicus n. sp. resembles N. gardineri Alcock, 1905 and N. lewinsohni Türkay, 1986, but is distinguished from the latter two by the characteristic dense setation on the upper part of the left cheliped carpus and by the elongate dactyli of pereopods 2 and 3 that lack a row of bristle-like setae on the dorsal margins. Pagurixus eminens n. sp. is referred to the P. boninensis Melin, 1939 species group and appears closest to P. annulus Komai & Poupin, 2013, but is differentiated from the latter in the shape and ornamentation of the right coxa of pereopod 5 in the male as well as details of the colour pattern on the chelipeds and ambulatory legs. Partial sequences of the mitochondrial 16S rRNA gene from the three new species were sequenced and deposited in the GenBank database for future genetic and phylogenetic study.
References
Alcock, A. (1905) Marine Crustaceans. 14. Paguridae. In: Gardiner, J.S. (Ed.), The Fauna and Geography of the Maldive and Laccadive Archipelagoes, being an Account of the Work Carried on and the Collections made by an Expedition during the Years 1899 and 1900. Vol. 2. Cambridge University Press, Cambridge, pp. 827–835.
Asakura, A. (1999) Icelopagurus tuberculosus, a distinct new hermit crab species (Crustacea: Decapoda: Paguridae) from Japan. Proceedings of the Biological Society of Washington, 112, 381–395.
Asakura, A. (2001) A revision of the hermit crab genera Catapagurus A. Milne-Edwards and Hemipagurus Smith from the Indo-West Pacific (Crustacea: Decapoda: Anomura: Paguridae). Invertebrate Taxonomy, 15, 823–891.
Edmondson, C.H. (1951) Some central Pacific crustaceans. Occasional Papers of Bernice P. Bishop Museum, 20, 183–243.
Forest, J. (1954) Crustacés décapodes marcheurs des îles de Tahiti et des Tuamotu. I. Paguridea (suite). Bulletin du Muséum National d’Histoire Naturelle, 2ème Série, 26, 71–79.
Gunn, S.W. & Morgan, G.J. (1992) A new species of Pagurixus (Crustacea: Decapoda: Paguridae) from southern Australia. Memoirs of Museum Victoria, 53 (1), 31–41.
Henderson, J.R. (1893) A contribution to Indian carcinology. Transactions of the Linnean Society of London, Series 2, Zoology, 5, 325–458, pls. 36–40.
Hogarth, P., Gherardi, F. & McLaughlin, P.A. (1998) Hermit crabs (Crustacea Decapoda Anomura) of the Maldives with the description of a new species of Catapagurus A. Milne Edwards, 1880. Tropical Zoology, 11, 149–175.
Komai, T. (1999) Hermit crabs of the families Diogenidae and Paguridae (Crustacea: Decapoda: Anomura) collected during the Shin’yo-maru cruise to the Ogasawara Islands and Torishima Island, oceanic islands in Japan. Natural History Research, Special Issue 6, 1–66.
Komai, T. (2010) New species and new records of the hermit crab genus Pagurixus Melin, 1939 (Crustacea: Decapoda: Anomura: Paguridae) from the Indo-West Pacific. Journal of Natural History, 44, 1269–1342. https://doi.org/10.1080/00222931003624812
Komai, T., Maenosono, T., Saeki, T. & Naruse, T. (2021) Redescription of the brackish water crab Ptychognathus glaber Stimpson, 1858 based on the topotypic material from the Ogasawara Islands and new record of P. lipkei N.K. Ng, 2010 from Japan (Decapoda: Brachyura: Varunidae). Zootaxa, 5048 (1), 58–76. https://doi.org/10.11646/zootaxa.5048.1.3
Komai, T. & Osawa, M. (2006) A review of the Pagurixus boninensis species group, with descriptions of six new species (Crustacea: Decapoda: Anomura: Paguridae). Zootaxa, 1214 (1), 1–107. https://doi.org/10.11646/zootaxa.1214.1.1
Komai, T. & Osawa, M. (2009) A new hermit crab species of the genus Catapagurus (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu Islands, southern Japan. Zootaxa, 2211 (1), 57–68. https://doi.org/10.11646/zootaxa.2211.1.3
Komai, T. & Poupin, J. (2013) Records of the hermit crab genus Pagurixus Melin, 1939 (Crustacea: Decapoda: Anomura: Paguridae) from Europa Island, western Indian Ocean, with descriptions of two new species. Zootaxa, 3608 (3), 191–203. https://doi.org/10.11646/zootaxa.3608.3.3
Komai, T. & Rahayu, D.L. (2013) Records of the hermit crab genus Pagurixus Melin, 1939 (Decapoda: Anomura: Paguridae) from shallow coral reefs in the Panglao Islands, the Philippines, with description of a new species. Raffles Bulletin of Zoology, 61, 133–141.
Komai, T. & Rahayu, D.L. (2021) Three new species of the pagurid hermit crab genus Catapagurus A. Milne-Edwards, 1880 (Decapoda: Anomura: Paguroidea) from the Bohol Sea, the Philippines. Raffles Bulletin of Zoology, 69, 156–174. https://doi.org/10.26107/RBZ-2021-0013
Komai, T., Rahayu, D.L. & Fujita, Y. (2021) Hermit crabs of the family Paguridae (Crustacea: Decapoda: Anomura) from Christmas and Cocos (Keeling) Islands, Indian Ocean Territory of Australia, with descriptions of three new species and one new genus. Raffles Bulletin of Zoology, 69, 378–402.
Komai, T. & Takeda, M. (2006) A review of the pagurid hermit crab (Decapoda: Anomura: Paguroidea) fauna of the Sagami Sea and Tokyo Bay, central Japan. Memoirs of the National Science Museum, 41, 71–144.
Lima, D., Tavares, M. & Mendonça, J.B. de Jr. (2019) Paguroids (Decapoda: Anomura: Diogenidae and Paguridae) of the remote oceanic Archipelago Trindade and Martin Vaz, off southeast Brazil, with new records, description of three new species and zoogeographical notes. Zootaxa, 4694 (1), 1–63. https://doi.org/10.11646/zootaxa.4694.1.1
Malay, M.C.D., Miller, A.K. & Komai, T. (2021) Hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea) of the Northern Marianas, including new records and an updated checklist. Micronesica, 2021-01, 1–29. http://micronesica.org/volumes/2021
McLaughlin, P. A. (2002) Pseudopaguristes, a new and aberrant genus of hermit crabs (Anomura: Paguridea: Diogenidae). Micronesica, 34, 185–199.
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.
McLaughlin, P.A. (2004a) A reappraisal of the hermit crab genera Catapagurus A. Milne-Edwards and Hemipagurus Smith (Crustacea: Decapoda: Anomura: Paguridae), with the description of a new species. Zootaxa, 433 (1), 1–16. https://doi.org/10.11646/zootaxa.433.1.1
McLaughlin, P.A. (2004b) A review of the hermit crab genus Nematopagurus A. Milne-Edwards & Bouvier, 1892 and the descriptions of five new species. In: Marshall, B. & Richer de Forges, B. (Eds.), Tropical Deep-Sea Benthos. Vol. 23. Mémoirs du Museum National d’Histoire Naturelle, 191, pp. 151–229.
McLaughlin, P.A. & Haig, J. (1984) A review of Pagurixus (Decapoda, Anomura, Paguridae) and descriptions of new species. Crustaceana, 47, 121–148. https://doi.org/10.1163/156854084X00379
McLaughlin, P.A. & Hogarth, P.J. (1998) Hermit crabs (Decapoda: Anomura: Paguridea) from the Seychelles. Zoologische Verhandelingen, 318, 1–48.
McLaughlin, P.A., Komai, T., Rahayu, D.L. & Lemaitre, R. (2010) Annotated checklist of anomuran decapod crustaceans of the world (exclusive of the Kiwaoidea and families Chirostylidae and Galatheidae of the Galatheoidea) Part I. Lithodoidea, Lomisoidea and Paguroidea. Raffles Bulletin of Zoology, Supplement 23, 5–107.
McLaughlin, P.A. & Okuno, J. (2010) A new and distinctive Japanese species of Nematopagurus (Decapoda, Paguridae), and a new record for Nematopagurus alcocki McLaughlin, 1997. In: Fransen, C.H.J.M., De Grave, S. & Ng, P.K.L. (Eds.), Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume. Crustaceana Monographs. Vol. 14. Brill, Leiden, pp. 473–482.
McLaughlin, P.A., Rahayu, D.L., Komai, T. & Chan, T.-Y. (2007) A Catalog of the Hermit Crabs (Paguroidea) of Taiwan. National Taiwan Ocean University, Keelung, 367 pp.
Melin, G. (1939) Paguriden und Galatheiden von Prof. Dr. Sixten Bocks Expedition nach den Bonin-Inseln 1914. Kongliga Svenska Vetenskapsakademiens Handlinger, Series 3, 18 (2), 1–119.
Milne-Edwards, A. (1880) Report on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico, and in the Caribbean Sea, 1877, 79, 79, by the United States Coast Survey steamer “Blake”, Lieut.-Commander C. D. Sigsbee, U.S.N., and Commander J. R. Bartlett, U.S.N., commanding. VIII. Études préliminaires sur les Crustacés. Bulletin of the Museum of Comparative Zoology, Harvard College, 8, 1–68.
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. (1993) Three new species of Pagurixus (Crustacea, Decapoda, Paguridae) from Western Australia, with notes on other Australian species. In: Wells, F.E., Walker, D.I., Kirkman, H. & Lethbridge, R. (Eds.), Proceedings of the Fifth International Marine Biological Workshop: The Marine Flora and Fauna of Rottnest Island, Western Australia. Western Australian Museum, Perth, pp. 163–181.
Nucci, P.R. & Melo, G.A.S. de (2012) A new species of Catapagurus A. Milne-Edwards (Crustacea: Decapoda: Anomura: Paguridae) from Brazil, with a key to the western Atlantic species. Zootaxa, 3499, 81–85
Osawa, M., Kawai, T. & Sakamaki, T. (2013) New records of Pagurixus Melin, 1939 (Crustacea: Decapoda: Paguridae) from the Ryukyu Islands, southwestern Japan, with description of a new species. Zootaxa, 3669 (3), 350–366. https://doi.org/10.11646/zootaxa.3669.3.9
Paulay, G., Kropp, R., Ng, P.K.L. & Eldredge, L.G. (2003) The crustaceans and pycnogonids of the Mariana Islands. Micronesica, 35 (36), 456–513.
Saint Laurent, M. de & McLaughlin, P.A. (2000) Superfamily Paguroidea Family Paguridae. In: Forest, J., Saint Laurent, M. de, McLaughlin, P.A. & Lemaitre, R. (Eds.), The Marine Fauna of New Zealand: Paguridea (Decapoda: Anomura) Exclusive of the Lithodidae. NIWA Biodiversity Memoir, 114, pp. 104–209.
Terao, A. (1914) Hermit crabs from Japan. Zoological Magazine, 25, 469–470. [in Japanese]
Türkay, M. (1986) Crustacea Decapoda Reptantia der Tiefsee des Roten Meeres. Senckenbergiana Maritima, 18 (3/6), 123–185.