Abstract
Two Cypretta species from Thailand are described: Cypretta aculeata n. sp. and Cypretta triangulata n. sp. Cypretta aculeata n. sp. can be characterized chiefly by the valve surface equipped with long setae, spine-like bristle and distinctive pits, the presence of tubercles on postero-ventral margin of the internal left valve and the denticulated ridge on the postero-ventral part of the internal right valve, the long d1 seta on the second thoracopod (T2), and the long Sp seta on the caudal ramus (CR). Based on the valve surface ornamentation, C. aculeata n. sp. is similar to C. globosa (Brady, 1886), C. intonsa Furtos, 1936, C. spinosa Cohuo-Durán et al., 2013 and C. vivacis Würdig & Pinto 1993. A key to the species within this group is thus provided. The main diagnostic features of Cypretta triangulata n. sp. are the triangular carapace in the dorsal view, the absence of tubercles on the postero-ventral margin of the internal left valve, the presence of denticulated ridge on the postero-ventral part of the internal right valve, the short d1 seta on T2 and the long Sp seta on the CR. The diagnostic characters for the species identification of the genus Cypretta are briefly discussed with regard to the morphology and number of the septa and lunules, the traits of the internal side of the valves, the features of soft body parts (such as the mandible, the thoracopods and the CR) and the morphological aspects of the hemipenis.
References
Battish, S.K. (1982) Freshwater ostracods of the family Cypridopsinae from Punjab, India, with the description of two new species. Journal of Natural History, 16, 83–94.
https://doi.org/10.1080/00222938200770061
Brady, G.S. (1886) Notes on Entomostraca collected by Mr. A. Haly in Ceylon. Journal of the Linnean Society, 19, 293–317.
https://doi.org/10.1111/j.1096-3642.1886.tb02227.x
Broodbakker, N.W. & Danielopol, D.L. (1982) The chaetotaxy of Cypridacea (Crustacea, Ostracoda) limbs: proposals for a descriptive model. Bijdragen tot de Dierkunde, 52 (2), 103–120.
Cohuo-Durán, S., Elías-Gutiérrez, M. & Karanovic, I. (2013) On three new species of Cypretta Vávra, 1895 (Crustacea: Ostracoda) from the Yucatan Peninsula, Mexico. Zootaxa, 3636 (4), 501–524.
https://doi.org/10.11646/zootaxa.3636.4.1
Deb, M. (1983) Brief descriptions of new species of Ostracoda: Crustacea from Maharashtra state (India). Records of the Zoological Survey of India, 81, 135–166.
Deb, M. (1984) On a small collection of freshwater ostracods (Crustacea) from Bihar, India. Journal of Zoological Society of India, 36, 35–43.
De Deckker, P. (1981) Ostracoda from Australian inland waters–notes on taxonomy and ecology. Proceedings of the Royal Society of Victoria, 93 (1), 43–85.
De Deckker, P. (1982) On Cypretta yapinga De Deckker sp. nov. Stereo-Atlas of Ostracod Shells, 9 (23), 133–140.
Dumont, H.J. & Martens, K. (1996) The freshwater microcrustacea of Easter Island. Hydrobiologia, 325, 83–99.
https://doi.org/10.1007/BF00028269
Furtos, N.C. (1936) Fresh-water Ostracoda from Florida and North Carolina. The American Midland Naturalist, 17, 491–522.
https://doi.org/10.2307/2419975
Gauthier, H. (1929) Cladocères et ostracodes du Sahara Central. Bulletin de la Société d'Histoire naturelle de l'Afrique du Nord, 20 (7), 143–162.
Grochmalicki, J. (1915) Beiträge zur Kenntnis der Süβwasserfauna Javas: Phyllopoda, Copepoda und Ostracoda. Bulletin International de l’Académie des Sciences de Cracovie, Classe des Sciences Mathématiques et Naturelles, Série B: Sciences Naturelles, 1915, 217–242.
Harshey, D.K. & Shrivastav, A.K. (1983) Some new records of freshwater ostracods from India. Current Science, 52 (15), 741–742.
Hartmann, G. (1964) Asiatische Ostracoden. Systematische und zoogeographische Untersuchungen. Internationale Revue der gesamten Hydrobiologie, Systematische Beihefte, 3, 1–155.
Karanovic, I. (2012) Recent Freshwater Ostracods of the World: Crustacea, Ostracoda, Podocopida. Springer-Verlag, Berlin Heidelberg, 608 pp.
https://doi.org/10.1007/978-3-642-21810-1
Klie, W. (1932) Die Ostracoden der Deutschen Limnologischen Sunda-Expedition. Archiv für Hydrobiologie, Supplementband, 11, 447–502.
Klie, W. (1938) Ostracoden aus dem belgischen Kongogebiet. Revue de zoologie et de botanique africaines, 30, 364–388.
Martens, K. (1987) Homology and functional morphology of the sexual dimorphism in the antenna of Sclerocypris Sars, 1924 (Crustacea, Ostracoda, Megalocypridinae). Bijdragen tot de Dierkunde, 57 (2), 183–190.
Martens, K. & Savatenalinton, S. (2011) A subjective checklist of the Recent, free-living, non-marine Ostracoda (Crustacea). Zootaxa, 2855, 1–79.
Meisch C. (2000) Freshwater Ostracoda of Western and Central Europe. In: Schwoerbel, J. & Zwick, P. (Eds.), Süßwasserfauna von Mitteleuropa. 8 (3). Spektrum Akademischer Verlag, Heidelberg, Berlin, 522 pp.
Moniez, R. (1892) Entomostracés d’eau douce de Sumatra et de Célébes-2: Ostracodes. In: Weber M. (Ed.), Zoologische Ergebnisse einer Reise in Niederlaendisch Ostindien, Leiden, 1892, pp. 129–135.
Müller, G.W. (1898) Ergebnisse einer zoologischen Forschungsreise in Madagaskar und Ost-Afrika 1889–1895 von Dr. A. Voeltzkow: Die Ostracoden. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 21, 255–296.
Neale, J.W. (1977) Ostracods from the rice-fields of Sri Lanka (Ceylon). Sixth International Ostracod Symposium, Saalfelden, 1977, 271–283.
Neale, J.W. (1984) The freshwater ostracoda. In: Fernando, C.H. (Ed.), Ecology and Biogeography in Sri Lanka. Monographiae Biologicae. Vol. 57. Dr W. Junk Publishers, The Hague, pp. 171–194.
https://doi.org/10.1007/978-94-009-6545-4_9
Savatenalinton, S. (2017) A new genus and four new species of subfamily Cyclocypridinae (Crustacea, Ostracoda) from Thailand. Zootaxa, 4243 (2), 329–365.
https://doi.org/10.11646/zootaxa.4243.2.4
Savatenalinton, S. & Martens, K. (2009a) Redescription of the type species of Strandesia (Stuhlmann, 1888) and Cypricercus Sars, 1895 (Crustacea, Ostracoda, Cypricercinae), with a description of a new species of Cypricercus from South Africa. Zootaxa, 2007, 1–42.
Savatenalinton, S. & Martens, K. (2009b) Generic revision of Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda), with the description of three new genera and one new species and a phylogenetic analysis of the subfamily. Hydrobiologia, 632, 1–48.
https://doi.org/10.1007/s10750-009-9826-5
Savatenalinton, S. & Martens, K. (2010) On the subfamily Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda) from Thailand, with the description of six new species. Zootaxa, 2379 (1), 1–77.
https://doi.org/10.11646/zootaxa.2379.1.1
Savatenalinton, S. & Suttajit, M. (2016) A checklist of recent non-marine ostracods (Crustacea: Ostracoda) from Thailand, including descriptions of two new species. Zootaxa, 4067 (1), 001–034.
https://doi.org/10.11646/zootaxa.4067.1.1
Smith, R.J., Lee, J. & Chang, C.Y. (2015) Nonmarine Ostracoda (Crustacea) from Jeju Island, South Korea, including description of two new species. Journal of Natural History, 49 (1–2), 37–76.
https://doi.org/10.1080/00222933.2014.946110
Sohn, I.G. & Kornicker, L.S. (1973) Morphology of Cypretta kawatai Sohn and Kornicker, 1972 (Crustacea, Ostracoda), with a discussion of the genus. In: Smithsonian Contributions to Zoology. No. 141. Smithsonian Institution Press, Washington, pp. 1–36.
Tressler, W.L. (1937) Ostracoda: Mitteilung 18 von der Wallacea-Expedition Woltereck 1931–32. Internationale Revue der Gesamten Hydrobiologie und Hydrographie, 34 (3–5), 188–207.
https://doi.org/10.1002/iroh.19370340112
Victor, R. & Fernando, C.H. (1979) The freshwater ostracods (Crustacea: Ostracoda) of India. Records of the Zoological Survey of India, 74, 147–242.
Victor, R. & Fernando, C.H. (1981) Freshwater ostracods (Crustacea: Ostracoda) of the Genus Cypretta Vávra, 1895 from Malaysia, Indonesia and the Philippines. Internationale Revue der gesamten Hydrobiologie, 66 (3), 415–433.
https://doi.org/10.1002/iroh.19810660312
Würdig, N.L. & Pinto, I.D. (1993) A new-fresh water Ostracoda from southern Brazil. Anais-Academia Brasileira de Ciencias, 65, 89–89.