Abstract
Two new syntopic species of the Diacyclops languidoides-group (D. danielopoli n. sp. and D. felixn. sp.) are described from interstitial groundwaters of Lobau wetlands, Austria. Both species lack the exopodal seta on antenna basipod, but differ in several minute morphological details of antennules, antennae, maxillulary palp, coxal plates, P4 basipod and caudal rami. Some of these characters are present in D. danielopoli n. sp. in an apomorphic state (reduction of setation patterns, longer aesthetascs on male and female antennules, absence of exopodal seta on maxillulary palp, longer dorsal caudal seta) suggesting a higher degree of specialization to the subterranean environment than in D. felix n. sp. The relationship between the reduction of setation patterns on mouthparts and the degree of stygobitization in the Diacyclops languidoides-species group is critically discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Danielopol, D. L. & R. Niederreiter, 1987. A sampling device for groundwater organisms and oxygen measurement in multi-level monitoring wells. Stygologia 3: 252-263.
Einsle, U., 1993. Crustacea, Copepoda, Calanoida und Cyclopoida. In Schwoerbel, J. & P. Zwick (eds), Süßwasserfauna von Mitteleuropa. 8/4-1, G. Fischer Stuttgart: 206 pp.
Pesce, G. L. & D. P. Galassi, 1985. Due nuovi Diacyclops del complesso 'languidoides' (Copepoda: Cyclopoida) di acque sotterranee di Sardegna e considerazioni sul significato evolutivo dell'antenna nei copepodi stigobionti. Boll. Mus. civ. Stor. nat. Verona 12: 411-418.
Pesce, G. L. & D. P. Galassi, 1987. New or rare species of Diacyclops Kiefer, 1927 from different groundwater habitats in Italy. Hydrobiologia 148: 103-114.
Huys, R. & G. A. Boxshall, 1991. Copepod evolution. Ray Society, 159: 1-468.
Monchenko, V. I., 1982. On two sympatric Black Sea estuarian Cyclops of the genus Diacyclops (Crustacea, Copepoda). Zool. Zh., Moscou 61(2): 182-189.
Pospisil, P., 1994 a. The groundwater fauna of a Danube aquifer in the 'Lobau' wetland in Vienna, Austria. In Gibert, J., D. L. Danielopol & J. A. Standford (eds), Groundwater Ecology. Academic Press, San Diego: 347-366.
Pospisil, P., 1994 b. Die Grundwassercyclopiden (Crustacea, Copepoda) der Lobau in Wien (Österreich): faunistische, taxonomische und ökologische Untersuchungen. Thesis Univ. Vienna: 222 pp.
Pospisil, P. & F. Stoch, 1997. Rediscovery and redescription of Austriocyclops vindobonae Kiefer, 1964 (Copepoda, Cyclopoida) with remarks on the subfamily Eucyclopinae Kiefer. Crustaceana 70(8): 901-910.
Stoch, F., 1995. The ecological and historical determinants of crustacean diversity in groundwaters, or: why are there so many species? Mém. Biospéol. 22: 139-160.
Stoch, F., in prep. Redescription of Diacyclops clandestinus Kiefer, 1926 and Diacyclops paolae Pesce & Galassi, 1987 (Copepoda, Cyclopoida) with remarks on the significance of mouthpart morphology in Diacyclops taxonomy.
Stoch, F. & J. Reid, in prep. Copepoda: Cyclopoida. Genera Diacyclops, Rheocyclops. In Dumont, H. J. F. (ed.), Guides to the Identification of theMicroinvertebrates of the Continental Waters of the World. Backhuys Publishers.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pospisil, P., Stoch, F. Two new species of the Diacyclops languidoides-group (Copepoda, Cyclopoida) from groundwaters of Austria. Hydrobiologia 412, 165–176 (1999). https://doi.org/10.1023/A:1003839301339
Issue Date:
DOI: https://doi.org/10.1023/A:1003839301339