Abstract
To date, 11 harpacticoid species from the family Parastenocarididae are known to occur on the Indian subcontinent. Of these, ten species belong to the genus Parastenocaris Kessler, 1913, and one to the genus Kinnecaris Jakobi, 1972. Two new species of the genus Parastenocaris, viz. P. muvattupuzha n. sp. and P. kotumsarensis n. sp., are described and illustrated herein from India and their taxonomic position within the genus Parastenocaris discussed. Parastenocaris muvattupuzha n. sp. was found in the hyporheic zone of the River Muvattupuzha in the State of Kerala, southwestern India. Having a unique set of morphological characters, this new species does not perfectly fit into any of the known Parastenocaris species-groups; it is treated as Parastenocaris s. l. It stands out in the genus, inter alia, by the presence of a distinct unguiform process at the inner distal corner of each caudal ramus in both sexes and a club-shaped, distally spinulose leg 4 endopod in the male. Parastenocaris kotumsarensis n. sp. is described based on specimens collected from Kotumsar Cave in the State of Chhattisgarh, central India. This species shares features with the brevipes-group of Parastenocaris (i.e. similar endopodal complex of the male leg 4) and the recently redefined genus Kinnecaris (i.e. presence of the triangular platelike fifth legs, which are similar in both sexes, and paired ventrolateral integumental windows on the antepenultimate and penultimate urosomites). Hence, for the time being, this species, like the preceding one, is also treated as Parastenocaris s. l. Parastenocaris kotumsarensis n. sp. is the first cavernicolous parastenocaridid from India and, on a broader geographical scale, from southern Asia.References
Berera, R. & Cottarelli, V. (2003) Two new species of interstitial harpacticoids from southern Italy and proposal of a new Parastenocaris species-group. Italian Journal of Zoology, 70, 261–268.
Boxshall, G.A. & Halsey, S.H. (2004) An Introduction to Copepod Diversity. The Ray Society, London, 966 pp.
Chappuis, P.A. (1940) Die Harpacticoiden des Grundwassers des unteren Maintales. Archiv für Hydrobiologie, 36, 286–305.
Corgosinho, P.H.C. & Martínez Arbizu, P. (2005) Two new interstitial species of Remaneicaris Jakobi 1972 from the Ribeirão do Ouro River, Minas Gerais, Brazil, with a redefinition of the genus (Crustacea, Copepoda, Harpacticoida, Parastenocarididae). Senckenbergiana biologica, 85, 147–162.
Corgosinho, P.H.C., Martínez Arbizu, P. & Santos Silva, E.N. (2007) Three new species of Remaneicaris Jakobi, 1972 (Copepoda, Harpacticoida, Parastenocarididae) from the Ribeirão do Ouro River, Minas Gerais, Brazil, with some remarks on the groundpattern of the Parastenocarididae. Zootaxa, 1437, 1–28.
Cottarelli, V., Bruno, M.C. & Berera, R. (2006) A new species of Parastenocaris from Mindoro Island, Philippines: Parastenocaris distincta sp. nov. (Crustacea: Copepoda: Harpacticoida: Parastenocarididae). Zootaxa, 1368, 57–68.
Cottarelli, V., Bruno, M.C. & Berera, R. (2007) Interstitial harpacticoids from groundwater in Tuscany (Central Italy): Parastenocaris reidae sp. nov., Nitocrella ensifera sp. nov., and notes on the morphology of Parastenocaris cf. glacialis Noodt (Crustacea: Copepoda). Italian Journal of Zoology, 74, 83–99.
Cottarelli, V. & Maiolini, B. (1980) Parastenocaris veneris n. sp. nuovo arpacticoide interstiziale del lago di Vico (Crustacea, Copepoda). Fragmenta Entomologica, 15, 243–252.
Damian, A. (1957) Noi copepode cavernicole. Buletin stiintific Academia Republicii Populare Române, 9, 131–143.
Dussart, B.H. & Defaye, D. (1990) Répertoire mondial des crustacés copépodes des eaux intérieures. III Harpacticoïdes. Crustaceana, Suppl. 16, 1–384.
Enckell, P.H. (1970) Parastenocarididae (Copepoda Harpacticoida) from Ceylon. Arkiv för Zoologi, 22, 545–556.
Galassi, D.M.P. & De Laurentiis, P. (2004) Towards a revision of the genus Parastenocaris Kessler, 1913: establishment of Simplicaris gen. nov. from groundwaters in central Italy and review of the P. brevipes-group (Copepoda, Harpacticoida, Parastenocarididae). Zoological Journal of the Linnean Society, 140, 417–436.
Jakobi, H. (1972) Trends (Enp. P4 Mänchen) innerhalb der Parastenocarididen (Copepoda Harpacticoidea). Crustaceana, 22, 127–146.
Karanovic, T. (2005) Two new subterranean Parastenocarididae (Crustacea, Copepoda, Harpacticoida) from Western Australia. Records of the Western Australian Museum, 22, 353–374.
Kessler, E. (1913) Parastenocaris brevipes nov. gen et nov. spec., ein neuer Süsswasserharpacticide. Zoologischer Anzeiger, 42, 514–520.
Kiefer, F. (1976) Ruderfusskrebse (Crustacea, Copepoda) aus dem Sandlückensystem einiger Bäche der Ostalpen. Beiträge zur Naturkundlichen Forschung in Südwestdeutschland, 35, 111–118.
Kunz, H. (1938) Harpacticoiden vom Sandstrand der Kurischen Nehrung (Studien an marinen Copepoden. III). Kieler Meeresforschungen, 39, 148–157.
Lang, K. (1948) Monographie der Harpacticiden, Håkan Ohlsson’s Boktryckeri, Lund, 2 vols., 1682 pp.
Martínez Arbizu, P. & Moura, G. (1994) The phylogenetic position of the Cylindropsyllinae Sars (Copepoda, Harpacticoida) and the systematic status of the Leptopontiinae Lang. Zoologische Beiträge, Neue Folge, 35, 55–77.
Noodt, W. (1962) Limnisch-subterrane Copepoden der Gattung Parastenocaris Kessler aus Mittelamerika. Beiträge zur Neotropischen Fauna, 11, 223–248.
Noodt, W. (1972) Drei neue Parastenocaris aus Kolumbien (Crustacea, Copepoda). 1. Mitteilung über kolumbianische Grundwasser-Crustaceen. Studies on Neotropical Fauna, 7, 101–112.
Pati, A.K. & Agrawal, A. (2002) Studies on the behavioural ecology and physiology of a hypogean loach, Nemacheilus evezardi, from the Kotumsar Cave, India. Current Science, 83, 1112–1116.
Ranga Reddy, Y. (2001) Discovery of Parastenocarididae (Copepoda, Harpacticoida) in India, with the description of three new species of Parastenocaris Kessler, 1913, from the River Krishna at Vijayawada. Crustaceana, 74, 705–733.
Ranga Reddy, Y. & Defaye, D. (2007) Parastenocarididae (Crustacea, Copepoda, Harpacticoida) of India: description of Parastenocaris mahanadi n. sp., and redescription of P. curvispinus Enckell, 1970 from hyporheic habitats. Zootaxa, 1580, 1–26.
Ranga Reddy, Y. & Schminke, H.K. (2009) Discovery of the genus Kinnecaris Jakobi, 1972 (Copepoda, Harpacticoida, Parastenocarididae) in southeastern India, with description of a new species. Crustaceana, 82, 311–326.
Reid, J.W. (1991) Diacyclops albus n. sp. and Parastenocaris palmerae n. sp. (Crustacea: Copepoda) from the meiofauna of a stream bed in Virginia, USA. Canadian Journal of Zoology, 69, 2893–2902.
Reid, J.W. (1994) Murunducaris juneae, new genus, new species (Copepoda, Harpacticoida, Parastenocaridide) from a wet campo in Central Brazil. Journal of Crustacean Biology, 14, 771–781.
Reid, J.W. (1995) Redescription of Parastenocaris brevipes Kessler and description of a new species of Parastenocaris (Copepoda: Harpacticoida: Parastenocarididae) from the USA. Canadian Journal of Zoology, 73, 173–187.
Sars, G.O. (1911) An Account of the Crustacea of Norway.Volume V. Copepoda Harpacticoida. Parts 31–36, pp 369–449, Supplementary Plates 11–54, Bergen Museum, Bergen.
Schminke, H.K. (1973) Evolution, System und Verbreitungsgeschichte der Familie Parabathynellidae (Bathynellacea, Malacostraca). Akademie der Wissenschaften und Literatur Mainz, Mathematisch-naturwissenschaftliche Klasse Mikrofauna Meeresboden, 24, 1–192.
Schminke, H.K. (1976) Systematische Untersuchungen an Grundwasserkrebsen eine Bestandsaufnahme (mit der Beschreibung zweier neuer Gattungen der familie Parabathynellidae, Bathynellacea). International Journal of Speleology, 8, 195–216.
Schminke, H.K. (1986) The systematic confusion within the family Parastenocarididae (Copepoda, Harpacticoida). Syllogeus, 58, 635. [Abstract]
Schminke, H.K. (2008) First report of groundwater fauna from Papua New Guinea: Kinnecaris Jakobi, 1972 redefined (Copepoda, Harpacticoida, Parastenocarididae), and description of a new species. Crustaceana, 81, 1241–1253.
Stoch, F. (2000) New and little known Parastenocaris (Copepoda, Harpacticoida, Parastenocarididae) from cave waters in northeastern Italy. Bolletino del Museo Civico di Storia Naturale di Verona, 24, 223–234.
Water Resources of Kerala (1958) Advance Report. Government of Kerala, Public Works Department, Irrigation Branch, Trivandrum, 314 pp.
Wells, J.B.J. (2007) An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea). Zootaxa, 1568, 1–872.