Abstract
A new genus and species of a chilean Paraleptamphopidae is described. Rudolphia n. gen. shares eleven characters with the family diagnosis sensu Bousfield, 1983. The diagnosis of the new genus is: A1 and A2 long; A1 equal to length of body, A1 inner flagellum scale shaped, calceoli gammarid-type in males only; Mx1 asymmetrical; Gn1 propodus mittenlike, palmar index = 1.81; Gn2 carpus longer than Gn1, palmar index = 2.39; coxal gills: P2–5 and 7 bilobate, P6 ovoid; dactyls of pereopods very long; Pleopods multiarticulate, Pl 2 sexually dimorphic; Uropods birami, rami uniarticulate, Ur1 and Ur2 exopodites scarcely shorter than endopodites, Ur1 peduncle longer than rami, Ur2 resembling Ur1 but much shorter, Ur3 subequal in length to Ur2, Ur3 peduncle shorter than rami, rami acuminated of equal length, with pairs of a bifid and a plumose setae; Telson cleft halfway. Rudolphia macrodactylus n. sp. is the first discovery of Paraleptamphopidae sp. out of New Zealand. A cladistic analysis allows us support that Paraleptamphopidae clade was differentiated before the New ZealandSouth America separation (80–85 mya).References
Barnard, J.L. & Barnard, C.M. (1983) Freshwater Amphipoda of the World I. Evolutionary Patterns. Hayfield Associates, Mt. Vernon, Virginia, 364 pp.
Barnard, J.L. & Williams, W.D. (1995) The taxonomy of Amphipoda (Crustacea) from Australia Fresh Waters: Part 2. Records of the Australian Museum, 47, 161 –201.
Bousfield, E.L. (1983) An updated phyletic classification and palaeohistory of the Amphipoda. In: Schram, F. R. (Ed.), Crustacean Phylogeny. Crustacean Issues 1. A. A. Balkema, Rotterdam, pp. 257–277.
Bradbury, J.H. & Williams, W.D. (1997) The Amphipod (Crustacea) Stygofauna of Australia: Description of New Taxa (Melitidae, Neoniphargidae, Paramelitidae), and a Synopsis of Known Species. Records of the Australian Museum, 49, 249–341.
Bradbury, J.H. & Williams, W.D. (1999) Key to and Checklist of the Inland Aquatic Amphipods of Australia. Technical Reports of the Australian Museum, 14, 1–21.
Cooper, R. A. (1989) New Zealand tectonostratigraphic terranes and panbiogeography. New Zealand Journal of Zoology, 16, 699–712.
Chilton, C. (1882) On some subterranean Crustacea. Transactions and Proceedings of the New Zealand Institute, 14: 174–180.
Fenwick, G. (2001) The freshwater Amphipoda (Crustacea) of New Zealand: a review. Journal of the Royal Society of New Zealand, 31 (2), 341–363.
Fenwick, G. (2006) Ringanui, a new genus of stygobitic amphipod from New Zealand (Amphipoda: Gammaridea: Paraleptamphopidae). Zootaxa, 1148, 1–25.
Goloboff, P. & Farris, J. (2001) Methods for quick consensus estimation. Cladistic, 17: S26–S34.
Goloboff, P., Farris, J. & Nixon, K. (2005) TNT: Tree analysis using New Technology. Ver 1.0. Available from http://www.zmuc.dk/public/phylogeny.
Grosso, L. (1992) Protojaniridae (Isopoda Asellota) en aguas intersticiales continentales de Sudamérica. Cuyojanira riojana n. gen. n. sp.. Stygologia, 7 (2), 119–125.
Grosso, L. & Peralta, M. (1999) Primera especie de Stygocaris (Crustacea, Syncarida) descubierta al este de los Andes. S. hugofernandezi n. sp. Physis, B, 57 (132–133), 39–44.
Grosso, L. & Peralta, M. (2002) Patagonaspides gen. n.; P. sandroruffoi sp. n. (Crustacea, Syncarida). First phreatobite species of a new anaspidacean family discovered in Patagonia with cladistic analysis of Stygocaridinea (Anaspidacea). Bolletino del Museo Civico di Storia Naturale di Verona, 26, 105–118.
Grosso, L. & Quiroga, A. (2007) Un nuevo Protojaniridae (Isopoda, Asellota) del Valle de la Luna, San Juan (Argentina). Cuyojanira ischichuca n. sp. Acta Zoológica Lilloana, 51 (2), 137–141.
Grosso, L., Peralta, M. & Ruffo, S. (2006) Description of Pseudoingolfiella morimotoi n. sp. (Crustacea, Amphipoda) from New Zealand and transantarctic distribution of the genus. Subterranean Biology, 4, 67–77.
Hay, W., Deconto, R., Wold, C., Wilson, K., Voigt, S., Schulz, M., Wold, A. R., Dullo, W-C., Ronov, A., Balukhovsky, A. & Söding E. (1999) Alternative global Cretaceous paleogeography. Geological Society of America, Special Paper, 332, 1–47.
Holsinger, J. (1992) Sternophysingidae, a New Family of Subterranean Amphipods (Gammaridea: Crangonyctoidea) from South Africa, with Description of Sternophysinx calceola, New Species, and Comments on Phylogenetic and Biogeographic Relationships. Journal of Crustacean Biology, 12 (1), 111–124.
Lincoln, R.J. & Hurley, D.E. (1981) The calceolus, a sensory structure of gammaridean amphipods (Amphipoda: Gammaridea). Bulletin of the British Museum (Natural History). Zoology, 40 (4), 103–116.
Noodt, W. (1963) Estudios sobre crustáceos de aguas subterráneas. III.-Crustacea Syncarida de Chile Central. Investigaciones Zoologicas Chilenas, 10, 151–167.
Peralta, M. & Grosso, L. (2009) Crustacea Syncarida, Amphipoda y Decapoda. In: Domínguez, E. & Fernández, H. (Eds), Macroinvertebrados bentónicos sudamericanos. Sistemática y Biología. Fundación Miguel Lillo, Tucumán, Argentina, pp. 469–495.
Rudolph, E.H. & Crandall, K.A. (2005) A new species of burrowing crayfish, Virilastacus rucapihuelensis (Crustacea: Decapoda: Parastacidae), from southern Chile. Proceedings of the Biological Society of Washington, 118 (4), 765–776.
Ruffo, S. (1973) Contributo alla revisione del genere Bogidiella Hertzog (Crustacea Amphipoda, Gammaridae). Bollettino dell`Istituto di Entomologia della Università di Bologna, 31, 1972–73, 49–77.
Schellenberg, A. (1930) Süsswasseramphipoden der Falklandinseln nebst Bemerkungen über Sternalkiemen. Zoologischer Anzeiger, 91, 81–90.
Schminke, H.K. (1980) Zur Systematik der Stygocarididae (Crustacea, Syncarida) und Beschreibung zweier neuer Arten (Stygocarella pleotelson gen. n., sp. n. und Stygocaris giselae sp. n.). Beaufortia, 30 (6), 139–154.
Stebbing, T.R.R. (1899) Revision of Amphipoda (continued). Annals and Magazine of Natural History 7 (4): 205–211.
Stock, J.H. & Platvoet, D. (1991) The freshwater Amphipoda of the Falkland Islands. Journal of Natural History, 25, 1469–1491.
Väinölä, R., Witt, J. D., Grabowski, M., Bradbury, J. H., Jazdzewski, K. & Sket, B (2008) Global diversity of amphipods (Amphipoda; Crustacea) in freshwater. Hydrobiologia 595: 241–255.
Vonk, R. & Schram, F.R. (2003) Ingolfiellidae (Crustacea, Malacostraca, Amphipoda): A phylogenetic and biogeographic analysis. Contributions to Zoology, 72 (1), 39–72.
Williams, W.D. (1986) Amphipoda on land-masses derived from Gondwana. In: Botosaneanu, L. (Ed), Stygofauna Mundi. A faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial). E. J. Brill, Leiden, The Netherlands, pp. 553–559.