, Volume 150, Issue 1, pp 75–90 | Cite as

A redescription of Euryalona orientalis (Daday, 1898), with a consideration of the other species in the genus Euryalona (Cladocera: Chydoridae)

  • R. Rajapaksa
  • C. H. Fernando


The morphological relationships of Euryalona orientalis (Daday, 1898) and its related species were studied based on the populations from different parts of the world. The type specimens of Euryalona orientalis and Euryalona occidentalis Sars, 1901 were examined to re-evaluate the taxonomic status of these two species. It was confirmed that E. occidentalis is a synonym of E. orientalis. A detailed description of E. orientalis is provided and a detailed comparison is made with a related species E. fasciculata.


Euryalona orientalis synonymy comparative morphology 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Bergamin, F., 1939. Os Cladocera. Rev. Ind. Anim., Nova Serie 2: 62–68.Google Scholar
  2. Brehm, V., 1933. Die Cladoceren der Deutschen Limnologischen Sunda—Expedition. Arch. Hydrobiol., Suppl. 11: 631–771.Google Scholar
  3. Brehm, V., 1935. Crustacea. I. Cladocera and Phyllopoda. Mission Scient. Omo 2: 141–166.Google Scholar
  4. Brehm, V., 1937. Brasilianische Cladoceren gesammelt von Dr. O. Schubart. Zweiter Bericht. Int. Rev. ges. Hydrobiol. Hydrogr. 35: 497–512.Google Scholar
  5. Brehm, V., 1938. Dritter Bericht über die von Dr. O. Schubart in Brasilien gesammelten Onychura. Zool. Anz. 122: 94–103.Google Scholar
  6. Brehm, V., 1939. La fauna microscopiea del lago Petén, Guatemala. An. Esc. Nac. Cienc. Biol. Mexico 1: 173–202.Google Scholar
  7. Brehm, V. & R. Thomsen, 1936. Brasilianische Phyllopoden and Arguliden gesammelt von Herrn Dr. O. Schubart. Zool. Anz. 116: 211–218.Google Scholar
  8. Chiang, S. C. & N. S. Du, 1979. Fauna Sinica (China) Crustacea: Freshwater Cladocera. Fauna Editorial Committee, Academica Sinica. Science Press, Peking VI, 297 pp. (in Chinese)Google Scholar
  9. Daday, E., 1898. Mikroskopische Süsswasserthiere aus Ceylon. Termés. Füz. 21: 1–123.Google Scholar
  10. Daday, E., 1905. Untersuchungen über die Süsswasser-Mikrofauna Paraguays. Zoologica (Stuttgart) 18: 1–374.Google Scholar
  11. Daday, E., 1910. Untersuchungen über die Süsswasser-Mikrofauna Deutsch-Ost-afrikas. Zoologica (Stuttgart) 59: 1–316.Google Scholar
  12. De Costa, J. J., 1964. Latitudinal distribution of chydorid Cladocera in the Mississippi Valley, based on their remains in surficial lake sediments. Invest. Indiana Lakes and Streams 6: 65–101.Google Scholar
  13. Diez, A. G. de & C. F. L. R. de. Kesner, 1967. Contribucion al estudio Limnologica de las lagunas de Corrientes. Notas Biologias de la fac. de Ciencias Exactas Fisicas y Naturales, Corrientes. Zoologia 6: 1–28.Google Scholar
  14. Dodds, G. S., 1926. Entomostraca from the Panama canal zone with description of one new species. Occ. papers Mus. Zool. Univ. Michigan 174: 1–27.Google Scholar
  15. Du, N. S., 1973. Cladocera of China. Science Press, Academia Sinica. Peking. 93 pp. (in Chinese)Google Scholar
  16. Fernando, C. H., 1974. Guide to the freshwater fauna of Ceylon (Sri Lanka) Suppl. 4. Bull. Fish. Res. Stn., Sri Lanka (Ceylon) 25: 27–81.Google Scholar
  17. Forro, L. & D. G. Frey, 1982. Cladocera taxa described by E. Daday, together with a catalogue of pertinent material in the Hungarian Natural History Museum. Misce. Zool. hung. 1: 91–132.Google Scholar
  18. Frey, D. G., 1965. A new genus of Chydoridae (Cladocera). Int. Revue ges. Hydrobiol. 50: 153–168.Google Scholar
  19. Fryer, G., 1957. Freeliving freshwater Crustacea from Lake Nyasa and adjoining waters. Part II: Cladocera and Conchostraca. Arch. Hydrobiol. 53: 223–239.Google Scholar
  20. Gauthier, H., 1930. Mission saharienne Augiera-Draper, Cladocères, Ostracodes, Phyllopodes, Anostracés et Conchostracés. Bull. Mus. Hist. nat. Paris 2nd Ser. 11: 292–116.Google Scholar
  21. Goulden, C. E., 1966. The animal microfossils. p. 84–120. In: The history of Laguna de Petenxil, a small lake in northern Guatemala, Edited by U. M. Cowgill et al. Mem. Connecticut Acad. Arts Sci. 17: 1–126Google Scholar
  22. Goulden, C. E., 1967. La aguada de Santa Ana Vieja: an interpretative study of the cladoceran microfossils. Arch. Hydrobiol. 62: 373–404.Google Scholar
  23. Green, J., 1962. Zooplankton of the River Sokoto. The Crustacea. Proc. Zool. Soc. London 138: 415–453.Google Scholar
  24. Harding, J. P., 1957a. The South African cladoceran Euryalona colletti Sars and another African species. Annls. South African Museum 42: 245–247.Google Scholar
  25. Harding, J. P., 1957b. Crustacea: Cladocera, Exploration hydrobiologique du lac Tanganyika (1946–1947). Resultats scientifiques 3: 55–89.Google Scholar
  26. Idris, B. A. G., 1983. Freshwater Zooplankton of Malaysia (Crustacea — Cladocera). Penerbit Universiti Pertanian Malaysia. Serdand, Selangor, 153 pp.Google Scholar
  27. Kořińek, V., 1984. Cladocera. Hydrobiological survey of the Lake Bangweulu Luapula River Basin. Résultats scientifiques Bruxelles 13(2): 117 pp.Google Scholar
  28. Mamaril, A. C. & C. H. Fernando, 1978. Freshwater zooplankton of the Philippines (Rotifera, Cladocera and Copepoda). Bull. Natl. Sci. Univ. Philipp. 30: 107–221.Google Scholar
  29. Olivier, S. R., 1955. A few aspects of the regional Limnology of the province of Buenos Aires. Verh. int. Ver. Limnol. 12: 296–301.Google Scholar
  30. Olivier, S. R., 1962. Los Cladoceros Argentinos. Rev. Mus. la Plata (nueva Serie) Zoologica 7: 173–269.Google Scholar
  31. Orghidan, N. & S. Negrea, 1973. Cladocères des eaux souterraines et épigées de Cuba. In Résultats des expeditions biospéologiques cubano-roumaines à Cuba 1: 105–115.Google Scholar
  32. Paggi, J. C., 1980. Aportes Al Conocimiento de la fauna Argentina de Cladoceros. II. Euryalona fasciculata Daday, 1905 y Euryalona occidentalis Sars, 1901. Rev. Asoc. Cienc. Nat. Litoral. 11: 145 -165.Google Scholar
  33. Paggi, S. B. & J. C. Paggi, 1974. Primeros estudios sobre el zooplancton de las aquas loticas del Parana Medic. Physis 33 (86): 91–114.Google Scholar
  34. Rajapaksa, R. & C. H. Fernando, 1986. A review of the systematics and distribution of Chydorus ventricosus Daday, 1898, with the first description of the male and redescription of the species. Can. J. Zool. 64: 818–832.Google Scholar
  35. Rey, J. & L. Saint Jean, 1968. Les Cladoceres (Crustacés, Branchiopodes) du Tchad. Cah. ORSTOM, Ser. Hydrobiol. 11: 79–118.Google Scholar
  36. Sars, G. O., 1901. Contribution to the knowledge of the freshwater Entomostraca of South America, as shown by artificial hatching from dried material. Arch. Math. Naturvidensk. 23: 1–102.Google Scholar
  37. Scourfield, D. J., 1902. The ephippia of the lynceid Entomostraca. J. Quekett. Microsc. Club (Ser. 2) 8: 217–244.Google Scholar
  38. Smirnov, N. N., 1971. Chydoridae Fauny Mira. Fauna SSSR. Rakoobraznyye Tom 1, Vyp. 2 Akad. Nauk. SSSR. Zool. Inst. Nov. Ser. No. 101. 531 pp. (in Russian).Google Scholar
  39. Smirnov, N. N. & B. V. Timms, 1983. A revision of the Australian Cladocera (Crustacea). Rec. Aust. Mus. Supp. 1: 132 pp.Google Scholar
  40. Stingelin, T., 1904. Untersuchungen über die Cladoceran Fauna von Hinterindien, Sumatra and Java. Zool. Jahrb. Abt. Syst. Oekol. Geogr. Tiere 21: 327–370.Google Scholar
  41. Stingelin, T. 1906. Cladoceren aus Paraguay. Ann. Biol. Lacustre 1: 181–192.Google Scholar

Copyright information

© Dr W. Junk Publishers 1987

Authors and Affiliations

  • R. Rajapaksa
    • 1
  • C. H. Fernando
    • 1
  1. 1.Department of BiologyUniversity of WaterlooWaterlooCanada

Personalised recommendations