Two new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopoida) from Thailand and an up-to-date key to the species recorded in Asia
Abstract
Metacyclops sakaeratensis sp. nov. and M. brancelji sp. nov. are described as being present in the mountainous areas of Northeastern and Southern Thailand, respectively. Two new species resemble M. woni in both sexes, but they are easily distinguished from their Cambodian relative by having: 1) transverse suture on the dorsal surface of the genital double-somite, 2) serrated hyaline frill on the posterior margin of third pedigerous somite, 3) different length / width ratio of caudal ramus, and 4) a row of spinule on caudal surface of intercoxal sclerite of the third swimming legs. The significant differences between M. sakaeratensis sp. nov. and M. brancelji sp. nov. are present in both sexes, including the body size, integumental ornamentation of the body surface, length / width ratio of caudal ramus, armature of the fifth swimming leg, and the male sixth swimming leg. In addition, an up-to-date key to the female of all fifteen species of Metacyclops recorded in Asia is provided.
References
Alekseev V.A. & Sanoamuang L. 2006. Biodiversity of cyclopoid copepods in Thailand – with a description of Afrocyclops henrii sp. n. Arthropoda Selecta 15: 277–290.
Boonsom J. 1984. The freshwater zooplankton of Thailand (Rotifera and Crustacea). Hydrobiologia 113: 223–229. https://doi.org/10.1007/BF00026610
Boonyanusith C. & Athibai S. 2021. A new species of Rangabradya (Copepoda, Harpacticoida, Ectinosomatidae) from a cave in Satun Province, southern Thailand. ZooKeys 1009: 45–66. http://doi.org/10.3897/zookeys.1009.54554
Boonyanusith C., Brancelj A. & Sanoamuang L. 2013. First representatives of the genus Fierscyclops Karanovic, 2004 (Copepoda, Cyclopidae) from South East Asia. Journal of Limnology 72 (suppl.2): 275–289. https://doi.org/10.4081/jlimnol.2013.s2.e13
Boonyanusith C., Saetang T., Wongkamheng K. & Maiphae S. 2018a. Onychocamptus Daday, 1903 from Thailand, with descriptions of two new species and two new records (Crustacea, Copepoda, Harpacticoida, Laophontidae). ZooKeys 810: 45–89. https://doi.org/10.3897/zookeys.810.29253
Boonyanusith C., Sanoamuang L. & Brancelj A. 2018b. A new genus and two new species of cave-dwelling cyclopoids (Crustacea, Copepoda) from the epikarst zone of Thailand and up-to-date keys to genera and subgenera of the Bryocyclops and Microcyclops groups. European Journal of Taxonomy 431: 1–30. https://doi.org/10.5852/ejt.2018.431
Boonyanusith C., Wongkamhaeng K. & Athibai S. 2020. A new species of Boholina (Crustacea, Copepoda, Calanoida) and a first record for stygobiotic calanoid fauna from a cave in Thailand. ZooKeys 904: 1–22. https://doi.org/10.3897/zookeys.904.37609
Brancelj A. 2005. Hadodiaptomus dumonti n. gen., n. sp., a new freshwater stygobitic calanoid (Crustacea: Copepoda: Calanoida) from Vietnam (South Asia) and a new member of the subfamily Speodiaptominae Borutzky, 1962. Hydrobiologia 534: 57–70. https://doi.org/10.1007/s10750-004-1321-4
Brancelj A. 2015. The Velika Pasica Cave – The History, Environment and Life in It. ZRC Publishing and National Institute of Biology, Ljubljana.
Brancelj A., Watiroyram S. & Sanoamuang L. 2010. The first record of cave-dwelling Copepoda from Thailand and description of a new species: Elaphoidella namnaoensis n. sp. (Copepoda, Harpacticoida). Crustaceana 83: 779–793. https://doi.org/10.1163/001121610X502894
Bricker K.S., Wongrat L. & Gannon J.E. 1978. Composition and distribution of crustacean plankton in twelve inland water bodies of Thailand. Kasetsart University Fisheries Research Bulletin 10: 1–14.
Bruno M.C. & Cottarelli V. 2015. First record of Kinnecaris (Copepoda: Harpacticoida: Parastenocarididae) from Turkey and Thailand; description of three new species and emended definition of the genus. Italian Journal of Zoology 82: 1–26. https://doi.org/10.1080/11250003.2014.1002820
Cottarelli V., Bruno M.C. & Berera R. 2010. First record of Parastenocarididae from Thailand and description of a new genus (Copepoda: Harpacticoida). Journal of Crustacean Biology 30: 478–494. https://doi.org/10.1651/09-3201.1
Defaye D. 1992. Metacyclops hannensis n. sp. (Crustacea, Copepoda, Cyclopoïda), un cyclopide nouveau du Sénégal. Revue d’Hydrobiologie Tropicale 25: 145–151.
Defaye D. & Por F.D. 2010. Metacyclops (Copepoda, Cyclopidae) from Ayyalon Cave, Israel. Crustaceana 83: 399–423. https://doi.org/10.1163/001121610X12627655658320
Dussart B.H. 1982. Crustacés Copépodes des Eaux Intérieures. Faune de Madagascar 58, ORSTOM, Paris.
Dussart B.H. & Defaye D. 2001. Introduction to the Copepoda. In: Dumont H.J.E. (ed.) Guides to the Identification of the Microinvertebrates of the Continental Waters of the World. Vol. 16. Backhuys Publishers, Leiden.
Dussart B.H. & Defaye D. 2006. World Directory of Crustacea Copepoda of Inland Waters II – Cyclopiformes. Backhuys Publishers, Leiden.
Dussart B.H. & Frutos S.M. 1985. Sur quelques copépodes d’Argentine. Revue d'Hydrobiologie tropicale 18: 305–314.
Fiers F. 2001. Meridiecyclops, gen. nov., a new cyclopid genus (Crustacea: Copepoda: Cyclopidae) from southern Australia. Invertebrate Taxonomy 15: 893–908. https://doi.org/10.1071/IT01003
Fiers F. 2012. The generic concept of Allocyclops Kiefer, 1932: (Copepoda: Cyclopoida: Cyclopidae) an alternative view. Journal of Natural History 46: 175–247. https://doi.org/10.1080/00222933.2011.626530
Galassi D.M.P. 2001. Groundwater copepods: diversity patterns over ecological and evolutionary scales. Hydrobiologia 453/454: 227–253. https://doi.org/10.1023/A:1013100924948
Galassi D.M.P. & Pesce G.L. 1994. Metacyclops geltrudeae n. sp., a new cyclopid from ground waters of Venezuela (Copepoda, Cyclopidae). Crustaceana 67: 284–287. https://doi.org/10.1163/156854094X00387
Gomi T., Sidle R.C. & Richardson J.S. 2002. Understanding processes and downstream linkages of headwater systems. BioScience 52: 905–916. https://doi.org/10.1641/0006-3568(2002)052[0905:UPADLO]2.0.CO;2
Huys R. & Boxshall GA. 1991. Copepod Evolution. The Ray Society, London.
Herbst H.V. 1988. Zwei neue Metacyclops (Crustacea Copepoda) von den westindischen Inseln Barbados und Aroba: M. agnitis n. sp. und M. mutates n. sp., sowie ein Bestimmungschlüssil für das Genus. Bijdragen tot de Dierkunde 58: 137–154. https://doi.org/10.1163/26660644-05801011
Ishida T. 1995. A new species of Metacyclops (Crustacea, Copepoda, Cyclopoida) from Ishigaki Island, the Ryukyu Islands. Proceedings of the Japanese Society of Systematic Zoology 50: 6–12.
Karanivic T. 2004a. Subterranean Copepoda from Arid Western Australia. Crustaceana Monographs. Vol.3. Brill, Leiden. https://doi.org/10.1163/9789047412779
Karanovic T. 2004b. The genus Metacyclops Kiefer in Australia (Crustacea: Copepoda: Cyclopoida), with description of two new species. Records of the Western Australian Museum 22: 193–212. https://doi.org/10.18195/issn.0312-3162.22(3).2004.193-212
Karanovic T., Eberhard S.M. & Murdoch A. 2011. A cladistic analysis and taxonomic revision of Australian Metacyclops and Goniocyclops, with description of four new species and three new genera (Copepoda, Cyclopoida). Crustaceana 84: 1–67. https://doi.org/10.1163/001121610X546698
Karanovic T., Koomput K. & Sanoamuang L. 2017. Two new Thermocyclops species (Copepoda, Cyclopoida) from Thailand, with notes on the genus phylogeny inferred from 18S and ITS sequences. Zoologischer Anzeiger – A Journal of Comparative Zoology. 269: 26–47. http://doi.org/10.1016/j.jcz.2017.07.003
Kiefer F. 1930. Neue Cyclopiden von den Sunda-Inseln. (2. Mitteilung über die Cyclopiden der Deutschen Limnologischen Sunda-Expedition). Zoologischer Anzeiger 90: 55–58
Kołaczyński A. 2015. A new species of Metacyclops from a hyporheic habitat in North Vietnam (Crustacea, Copepoda, Cyclopidae). ZooKeys 522: 141–152. http://doi.org/10.3897/zookeys.522.5989
Koompoot K. & Sanoamuang L. 2021. Parapseudoleptomesochra phayaoensis, a new species of copepod (Copepoda: Harpacticoida: Ameiridae) from a cave in northern Thailand. Invertebrate Zoology 18: 1–15. https://doi.org/10.15298/invertzool.18.1.01
Lee J.M. & Chang C.Y. 2015. Metacyclops woni n. sp., a new cyclopoid species (Copepoda: Cyclopoida: Cyclopidae) from Cambodia. Animal Systematics Evolution and Diversity 31: 247–256. https://doi.org/10.5635/ASED.2015.31.4.247
Lindberg K. 1940. Cyclopides (Crustacés Copépodes) de l’Inde. IV. Une révision des réprésentants indiens et iraniens du sous-genre Metacyclops Kiefer, du genre Cyclops Müller. Records of the Indian Museum 42: 576–588.
Lindberg K. 1961. Remarques sur le genre Metacyclops (Kiefer, 1927) et description d’un Metacyclops nouveau du Portugal. Kunglige Fysiografiska Sällskapets i Lund Förhandlingar 31: 133–145.
Mercado-Salas N.F., Suárez-Morales E., Maeda-Martinez A.M. & Silva-Briano M. 2013. A new species of Metacyclops Kiefer, 1927 (Copepoda, Cyclopidae, Cyclopinae) from the Chihuahuan desert, northern Mexico. ZooKeys 287: 1–18. http://doi.org/10.3897/zookeys.287.4358
Meyer J.L., Strayer D.L., Wallace J.B., Eggert S.L., Helfman G.S. & Leonard N.E. 2007. The contribution of head water streams to biodiversity in river networks. Journal of the American Water Resources Association 40: 86–103. https://doi.org/10.1111/j.1752-1688.2007.00008.x
Pesce G.L. 1978. The occurrence of Metacyclops subdolus Kiefer (Crustacea, Copepoda) in subterranean waters of Greece with remarks on its systematic status. International Journal of Speleology 10: 179–183. https://doi.org/10.5038/1827-806X.10.2.4
Pesce G.L. 1996. Towards a revision of Cyclopinae copepods (Crustacea, Cyclopidae). Fragmenta Entomologica 28: 189–200.
Reid J.W. 1987. The cyclopoid copepods of a wet campo marsh in central Brazil. Hydrobiologia 153: 121–138. https://doi.org/10.1007/BF00006644
Reid J.W. 1991. The genus Metacyclops (Copepoda: Cyclopoida) present in North America: M. cushae, new species, from Louisiana. Journal of Crustacean Biology 11: 639–646. https://doi.org/10.2307/1548532
Rocha C.E.F. 1994. New species of Metacyclops (Copepoda, Cyclopidae) from Brazil, with remarks on M. campestris. Zoologica Scripta 23: 133–146. https://doi.org/10.1111/j.1463-6409.1994.tb00380.x
Sanoamuang L. 1999. Species composition and distribution of freshwater Calanoida and Cyclopoida (Copepoda) of Northeast Thailand. In: Schram F.R. & von Vaupel Klein J.C. (eds) Crustaceans and the Biodiversity Crisis. Proceeding of the Fourth International Crustacean Congress, 1998. Vol.1: 217–230. Brill, Leiden.
Sanoamuang L. & Watiroyram S. 2021. Description of Elaphoidella brancelji sp. nov. (Crustacea, Copepoda), a new species from a cave in Northern Thailand. Tropical Natural History 21: 321–336.
Sanoamuang L., Boonyanusith C. & Brancelj A. 2019. A new genus and new species of stygobitic copepod (Crustacea: Copepoda: Cyclopoida) from Thien Duong Cave in Central Vietnam, with a redescription of Bryocyclops anninae (Menzel, 1926). Raffles Bulletin of Zoology 67: 189–205. https://doi.org/10.26107/RBZ-2019-0016
Sket B. 2008. Can we agree on an ecological classification of subterranean animals? Journal of Natural History 42: 1549–1563. https://doi.org/10.1080/00222930801995762
Stoch F. 1987. Cave-dwelling cyclopoids (Crustacea, Copepoda) from Venezia Giulia (northeastern Italy). Bulletin Zoölogisch Museum 11: 41–56.
Tai A.Y. & Chen G.X. 1979. Cyclopoida. In: Shen C.J. and Fauna Editorial Committee (eds) Fauna Sinica: Crustacea, Freshwater Copepoda: 301–420. Science Press, Beijing. [In Chinese.]
Tran D.L. & Brancelj A. 2017. Amended diagnosis of the genus Nannodiaptomus (Copepoda, Calanoida), based on redescription of N. phongnhaensis and description of a new species from caves in central Vietnam. Zootaxa 4221: 457–476. https://doi.org/10.11646/zootaxa.4221.4.3
Watiroyram S. 2018a. Bryocyclops asetus sp. n. and the presence of Bryocyclops muscicola (Menzel, 1926) from Thailand (Crustacea, Copepoda, Cyclopoida, Cyclopidae). ZooKeys 793: 29–51. https://doi.org/10.3897/zookeys.793.25005
Watiroyram S. 2018b. Two new species of the genus Bryocyclops Kiefer, 1927 (Copepoda: Cyclopoida: Cyclopidae) from southern Thailand. Raffles Bulletin of Zoology 66: 149–169.
Watiroyram S. 2021a. A new representative of the genus Bryocyclops Kiefer, 1927 from a karst cave in north-eastern Thailand (Copepoda, Cyclopoida, Cyclopidae) and comments on the generic affinities. Zoosystematics and Evolution 97: 97–109. https://doi.org/10.3897/zse.97.52354
Watiroyram S. 2021b. Attheyella (Canthosella) thailandica sp. nov. (Copepoda, Harpacticoida, Canthocamptidae) from caves in Thailand. Subterranean Biology 37: 57–73. https://doi.org/10.3897/subtbiol.37.55376
Watiroyram S. & Brancelj A. 2016. A new species of the genus Elaphoidella Chappuis (Copepoda, Harpacticoida) from a cave in the South of Thailand. Crustaceana 89: 459–476. https://doi.org/10.1163/15685403-00003536
Watiroyram S., Brancelj A. & Sanoamuang L. 2012. A new Bryocyclops Kiefer (Crustacea: Copepoda: Cyclopoida) from karstic caves in Thailand. Raffles Bulletin of Zoology 60: 11–21.
Watiroyram S., Brancelj A. & Sanoamuang L. 2015a. A new cave-dwelling copepod from northeastern Thailand (Cyclopoida: Cyclopidae). Raffles Bulletin of Zoology 63: 426–437.
Watiroyram S., Brancelj A. & Sanoamuang L. 2015b. Two new stygobiotic species of Elaphoidella (Crustacea: Copepoda: Harpacticoida) with comments on geographical distribution and ecology of harpacticoids from caves in Thailand. Zootaxa 3919: 81–99. https://doi.org/10.11646/zootaxa.3919.1.4
Watiroyram S., Sanoamuang L. & Brancelj A. 2017. Two new species of Elaphoidella (Copepoda, Harpacticoida) from caves in southern Thailand and a key to the species of Southeast Asia. Zootaxa 4282: 501–525. https://doi.org/10.11646/zootaxa.4282.3.5
Watiroyram S., Sanoamuang L. & Brancelj A. 2021. New species of Elaphoidella Chappuis, 1929 and Schizopera Sars, 1905 (Copepoda: Harpacticoida) from two caves in northeastern and southern Thailand. Zootaxa 5051: 550–569. https://doi.org/10.11646/zootaxa.5051.1.22
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