Abstract
A new species of the squat lobster genus Eumunida Smith, 1883 (Chirostyloidea: Eumunididae), E. multispina, is described and illustrated primarily on the basis of two male specimens from the Arabian Sea off the Kerala State, southwestern India, at depths of 250–400 m. One specimen from Lakshadweep, previously identified with E. funambulus Gordon, 1930, is also referred to the new species. The new species is morphologically most similar to E. funambulus among the 29 known congeners, but the presence of four epigastric spines and more numerous lateral spines on the carapace (four on the anterolateral and seven to 10 on the branchial margins) immediately distinguish the new species from E. funambulus. Genetic analysis using the mitochondrial COI and 16S rRNA markers also indicates that the new species is distinct from congenerics for which the sequence data are available.
References
Baba, K., Ahyong, S.T. & Macpherson, E. (2011) Morphology of marine squat lobsters. In: Poore, G.C.B., Ahyong, S.T. & Taylor, J. (Eds.), The Biology of Squat Lobsters. CSIRO Publishing, Melbourne, pp. 1–37.
Baba, K. & Lin, C.-W. (2008) Five new species of chirostylid crustaceans (Crustacea: Decapoda: Anomura: Chirostylidae) from Taiwan. Zootaxa, 1919, 1–24.
Baba, K., Macpherson, E., Lin, C.-W. & Chan, T.-Y. (2009) Crustacean Fauna of Taiwan: Squat Lobsters (Chirostylidae and Galatheidae). National Taiwan Ocean University, Keelung, ix + 311 pp.
Baba, K., Macpherson, E., Poore, G.C.B., Ahyong, S.T., Bermudez, A., Cabezas, P., Lin, C.-W., Nizinski, M., Rodriguez, C. & Schnabel, K. (2008) Catalogue of squat lobsters of the world (Crustacea: Decapoda: Anomura—families Chirostylidae, Galatheidae and Kiwaidae). Zootaxa, 1905, 1–220.
Baba, K. & Wicksten, M.K. (2019) Chirostyloidean squat lobsters (Crustacea: Decapoda: Anomura) from the Galapagos Islands. Zootaxa, 4564 (2), 391–421.
https://doi.org/10.11646/zootaxa.4564.2.5
Chakraborty, R.D., Chan, T.-Y., Maheswarudu, G., Kuberan, G., Purushothamani, P., Chang, S.-C. & Jomon, S. (2015) On Plesionika quasigrandis Chace, 1985 (Decapoda, Caridea, Pandalidae) from southwestern India. Crustaceana, 88, 923–930.
https://doi.org/10.1163/15685403-00003451
Chan, T.-Y., Biju Kumar, A. & Yang, C.-H. (2017) Photophore counts in the deep-sea commercial shrimp Aristeus alcocki Ramadan, 1938 (Crustacea: Decapoda: Aristeidae), with a revised key to the Indo-West Pacific species of the genus. Zootaxa, 4329 (4), 392–400.
https://doi.org/10.11646/zootaxa.4329.4.5
Felsenstein, J. (1985) Confidence-limits on phylogenies—an approach using the bootstrap. Evolution, 39, 783–781.
https://doi.org/10.1111/j.1558-5646.1985.tb00420.x
Folmer, O., Black, M., Hoeh, W., Lutz, R. & Vrijenhoek, R. (1994) DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Molecular Marine Biology and Biotechnology, 3, 294–299.
George, M.J. & Rao, P.V. (1966) On some decapods crustaceans from the south-west coast of India. In: Proceedings of the Symposium on Crustacea. Part. 1. Marine Biological Association of India, Ernakuram, pp. 327–336.
Gordon, I. (1930) On the species of the galatheid genus, Eumunida (Crustacea, Decapoda). Proceedings of the General Meetings for Scientific Business of the Zoological Society of London, 1929, 741–753.
Haig, J. (1979) A new genus and species of Chirostylidae (Decapoda, Anomura, Galatheidea) from the Hawaiian Islands. Crustaceana, 5, 89–94.
Komai, T. & Rajool Shanis, C.P. (2011) A new species of the genus Parastylodactylus Figueira, 1971 (Crustacea: Decapoda: Caridea: Stylodactylidae) from off Kollam, southwest coast of India. Zootaxa, 3140 (1), 60–68.
https://doi.org/10.11646/zootaxa.3140.1.5
Komai, T., Reshmi, R. & Biju Kumar, A. (2012) A new species of the hermit crab genus Ciliopagurus Forest (Crustacea: Decapoda: Anomura: Diogenidae) from southern India. Zootaxa, 3266, 53–61.
Komai, T., Reshmi, R. & Biju Kumar, A. (2013) Rediscovery and range extension of Ciliopagurus liui Forest, 1995 and description of a new species of Pagurus Fabricius, 1775 (Crustacea: Decapoda: Anomura: Paguroidea) from the Kerala State, southwestern India. Zootaxa, 3710, 467–484.
https://doi.org/10.11646/zootaxa.3710.5.5
Komai, T., Reshmi, R. & Biju Kumar, A. (2015) A new species of the hermit crab genus Paguristes Dana, 1851 (Crustacea: Decapoda: Anomura: Diogenidae) from southwestern India. Zootaxa, 3937, 517–532.
https://doi.org/10.11646/zootaxa.3937.3.5
Komai, T. & Tsuchida, S. (2014) Deep-sea decapod crustaceans (Caridea, Polychelida, Anomura and Brachyura) collected from the Nikko Seamounts, Mariana Arc, using a remotely operated vehicle “Hyper-Dolphin”. Zootaxa, 3764 (3), 279–316.
https://doi.org/10.11646/zootaxa.3764.3.3
Kumar, S., Stecher, G. & Tamura, K. (2016) MEGA7: Molecular evolutionary genetics analysis version 7.0 for bigger datasets. Molecular Biology and Evolution, 33, 1870–1874.
https://doi.org/10.1093/molbev/msw054
Macpherson, E, Rodríguez-Flores, P.C. & Machordom, A. (2017) New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean. European Journal of Taxonomy, 343, 1–61.
https://doi.org/10.5852/ejt.2017.343
Milne-Edwards, A. & Bouvier, E.L. (1900) Crustacés décapodes. Première partie. Brachyures et Anomoures. In: Milne-Edwards, A. (Ed.), Expéditions scientifiques du Travailleuret du Talisman pendant les années 1880, 1881, 1882, 1883. Masson, Paris, pp. 1–396, 32 pls.
Ng, P.K.L. & Biju Kumar, A. (2015a) The species of Moloha Barnard, 1946, from the western Indian Ocean, with the description of a new species from India (Crustacea: Brachyura: Homolidae). European Journal of Taxonomy, 166, 1–25.
https://doi.org/10.5852/ejt.2015.166
Ng, P.K.L. & Biju Kumar, A. (2015b) A new species of Afropinnotheres Manning, 1993 (Crustacea, Brachyura, Pinnotheridae) from southwestern India, the first record of the genus from the Indian Ocean, with a review of the Pinnotheridae of India and adjacent seas. Zootaxa, 3947 (2), 264–274.
https://doi.org/10.11646/zootaxa.3947.2.8
Ng, P.K.L. & Biju Kumar, A. (2016) Carcinoplax fasciata, a new species of deep-water goneplacid crab from southwestern India (Crustacea: Decapoda: Brachyura: Goneplacoidea). Zootaxa, 4147, 192–200.
https://doi.org/10.11646/zootaxa.4147.2.6
Ng, P.K.L., Devi, S. & Biju Kumar, A. (2017) Typhlocarcinus kerala, a new species of rhizopine crab from southwestern India, and the identity of T. craterifer Rathbun, 1914 (Crustacea: Brachyura: Pilumnidae). Zootaxa, 4272 (1), 131–141.
https://doi.org/10.11646/zootaxa.4272.1.7
Ng, P.K.L., Devi, S. & Biju Kumar, A. (2018) The genus Parilia Wood-Mason, in Wood-Mason & Alcock, 1891, with description of a new species and establishment of a new genus for P. tuberculata Sakai, 1961 (Crustacea, Brachyura, Leucosiidae). Raffles Bulletin of Zoology, 66, 300–319.
Ng, P.K.L., Ravinesh, R. & Ravichandran, S. (2017) A new large oregoniid spider crab of the genus Pleistacantha Miers, 1879, from the Bay of Bengal, India (Crustacea, Brachyura, Majoidea). ZooKeys, 716, 127–146.
https://doi.org/10.3897/zookeys.716.21349
Ortmann, A.E. (1892) Die Decapoden-Krebse des Strassburger Museums, mit besonderer Berücksichtigung der von Herrn Dr. Döderlein bei Japan und bei den Liu-Kiu-Insel gesammelten und zur Zeit im Strassburger Museum aufbewahrten Formen. IV. Die Abtheilungen Galatheidea und Paguridea. Zoologische Jahrbücher, Abtheilung für Systematik, Geographie und Biologie der Thiere, 6, 241–326.
Osawa, M. & Higashiji, T. (2019) Two large squat lobsters of the superfamily Chirostyloidea (Crustacea: Decapoda: Anomura) from the Ryukyu Islands, southwestern Japan, with description of a new species of the genus Eumunida Smith, 1883. Zootaxa, 4555 (3), 319–330.
https://doi.org/10.11646/zootaxa.4555.3.2
Palumbi, S.R. (1996) Nucleic acids II: The polymerase chain reaction. In: Hillis, D.M., Moritz, C. & Mable, B.K. (Eds.), Molecular Systematics. Sinauer, Sunderland, pp. 205–247.
Pillai, S.L., Kunhikoya, V.A. & Said Koya, K.P. (2014) Occurrence of the deep sea squat lobster Eumunida funambulus Gordon, 1930 in Kavaratti, Lakshadweep. Indian Journal of Fisheries, 61 (3), 116–117.
Puillandre, N., Macpherson, E., Lambourdière, J., Cruaud, C., Boisselier-Dubayle, M.-C. & Samadi, S. (2011) Barcoding type specimens helps to identify synonyms and an unnamed new species in Eumunida Smith, 1883 (Decapoda: Eumunididae). Invertebrate Systematics, 25, 322–333.
https://doi.org/10.1071/IS11022
Reshmi, R. & Biju Kumar, A. (2013) New report of the hermit crabs Dardanus lagopodes (Forskål, 1775), Paguristes miyakei Forest & McLaughlin, 1998 and Oncopagurus monstrosus (Alcock, 1894) (Crustacea: Decapoda: Anomura) from the Indian coast. Records of the Zoological Survey of India, 113, 197–201.
Saint Laurent, M. de & Macpherson, E. (1990a) Crustacea Decapoda: Le genre Eumunida Smith, 1883 (Chirostylidae) dans les eauxnéo-caledoniennes. In: Crosnier, A. (Ed.), Résultats des Campagnes MUSORSTOM. Vol. 6. Mémoires du Museum National d'Histoire Naturelle, Paris, (A), 145, 227–288.
Saint Laurent, M. de & Macpherson, E. (1990b) Les espèces atlantiques du genre Eumunida Smith, 1883 (Crustacea: Decapoda: Chirostylidae). Journal of Natural History, 24, 647–666.
Saint Laurent, M. de & Poupin, J. (1996) Crustacea, Anomura: Les espèces indo-ouest pacifiques du genre Eumunida Smith, 1880 (Chirostylidae) Description de six espèces nouvelles. In: Crosnier, A. (Ed.), Résultats des Campagnes MUSORSTOM. Vol. 15. Mémoires du Museum National d'Histoire Naturelle, Paris, 168, pp. 337–385.
Schnabel, K.E. & Ahyong, S.T. (2010) A new classification of the Chirostyloidea (Crustacea: Decapoda: Anomura). Zootaxa, 2687, 56–64.
https://doi.org/10.11646/zootaxa.2687.1.4
Smith, S.I. (1883) Preliminary report on the Brachyura and Anomura dredged in deep water off the south coast of New England by the United States Fish Commission in 1880, 1881, and 1882. Proceedings of the United States National Museum, 6, 1–57, pls. 51–56.
https://doi.org/10.5479/si.00963801.6-343.1
Vaitheeswaran, T. & Venkataramani, V.K. (2012) Three new records of squat lobsters Eumunida funambulus (Gordon, 1930) (Chirostyloidea: Chirostylidae), Agononida eminens (Baba, 1988) and Munida heteracantha (Ortmann, 1892) (Galatheoidea: Munididae) (Crustacea: Decapoda) from Gulf of Mannar. Tamilnadu Journal of Veterinary & Animal Sciences, 8, 87–93.
WoRMS Editorial Board (2019) World Register of Marine Species. Available from: http://www.marinespecies.org at VLIZ (accessed11 March 2019)
Yang, C.-H., Biju Kumar, A. & Chan, T.-Y. (2017a) Further records of the deep-sea pandalid shrimp Heterocarpus chani Li, 2006 (Crustacea, Decapoda, Caridea) from southern India. ZooKeys, 685, 151–159.
https://doi.org/10.3897/zookeys.685.13398
Yang, C.-H., Biju Kumar, A. & Chan, T.-Y. (2017b) A new slipper lobster of the genus Petrarctus Holthuis, 2002 (Crustacea, Decapoda, Scyllaridae) from southwest coast of India. Zootaxa, 4329, 477–486.