Abstract
Recent fieldwork and review of existing collections containing Chiloglanis specimens from the lower Malagarasi and Luiche rivers in western Tanzania has revealed three new species that are readily distinguished from described congeners by external features. Two of the species, Chiloglanis igamba sp. nov., and Chiloglanis orthodontus sp. nov. are restricted to the Malagarasi basin. The third species, Chiloglanis kazumbei sp. nov., is more broadly distributed in both the Malagarasi and adjacent Luiche basin. A key to all described species within these two basins is presented, along with comments on the distribution and validity of nominal Chiloglanis species examined during this study.
References
Boulenger, G.A. (1900) On some little-known African silurid fishes of the subfamily Doradinae. Annals and Magazine of Natural History (Series 7), 6, 520–529.
Boulenger, G.A. (1904) Descriptions of new West-African freshwater fishes. Annals and Magazine of Natural History (Series 7), 14, 16–20.
Daget, J. & Stauch, A. (1963) Poissons de la partie camerounaise du Bassin de la Bénoué. Memoirs de l’Institut Français d’Afrique Noire, 68, 85–107.
De Vos, L. (1993) Le genre Chiloglanis (Siluriformes, Mochokidae) dans le bassin de la Ruzizi: description de deux nouvelles espèces. Journal of African Zoology, 107, 153–168.
De Vos, L., Seegers, L., Taverne, L., and Thys van den Audenaerde, D. (2001) L'ichtyofaune du bassin de la Malagarasi (Système du Lac Tanganyika): une synthèse de la connaissance actuelle. Annales Musée Royal de l'Afrique Centrale, Sciences Zoologiques, 285, 117–135.
Friel, J.P. & Vigliotta, T.R. (2008) Atopodontus adriaensi, a new genus and species of African suckermouth catfish from the Ogôoué and Nyanga River systems of Gabon (Siluriformes: Mochokidae). Proceedings of the Academy of Natural Sciences of Philadelphia, 157, 73–136.
Ng, H.H. & Bailey, R.M. (2006) Chiloglanis productus, a new species of suckermouth catfish (Siluriformes: Mochokidae) from Zambia. Occasional Papers of the University of Michigan Museum of Zoology, 738, 1–13.
Peters, W. (1868) Ueber eine von dem Baron Carl von der Decken entdeckte neue Gattung von Welsen, Chiloglanis deckenii, und einige andere Süsswasserfische aus Ostafrika. Monatsberichte der Königlichen Preussische Akademie des Wissenschaften zu Berlin, 598–602, pl. 2.
Poll, M. (1944) Descriptions de poissons nouveaux recueillis dans la région d'Albertville (Congo belge) par le Dr. G. Pojer. Bulletin du Musée Royal d’Histoire Naturelle de Belgique, 20, 1–12.
Poll, M. (1952) Poissons de rivières de la région des lacs Tanganika et Kivu recuellis par G. Marlier. Revue de Zoologie et de Botanique Africaines, 46, 3–4, 221–236.
Poll, M. (1976) Poissons. Exploration Parc National Upemba Mission G. F. de Witte, 73, 1–127, 43 pls.
Riehl, R. & Baensch, A. (1990) Mergus Aquarien Atlas. Band 3. Melle, Germany, Mergus, 1104 pp.
Roberts, T.R. (1989) Systematic revision and description of new species of suckermouth catfishes (Chiloglanis, Mochokidae) from Cameroun. Proceedings of the California Academy of Sciences, Series 4, 46, 151–178.
Sabaj Pérez, M.H. (2010) Standard symbolic codes for institutional resource collections in herpetology and ichthyology: an Online Reference. Version 2.0. American Society of Ichthyologists and Herpetologists, Washington, DC. Available from: http://www.asih.org/ (accessed 8 November 2010).
Sauvage, H.E. (1879) Notice sur la faune ichthyologique de l'Ogôoué. Bulletin de la Société Philomathique (Serie 7), 3, 90–103.
Seegers, L. (1996) The fishes of the Lake Rukwa drainage. Musée Royal de l’Afrique Centrale, Annales, Sciences Zoologiques, 278, 1–407.
Skelton, P.H. & White, P.N. (1990) Two new species of Synodontis (Pisces: Siluroidei: Mochokidae) from southern Africa. Ichthyological Exploration of Freshwaters, 1, 277–287.
Tiecelin, J.-J. & Mondeguer, A. (1991) The geology of the Tanganyika Trough. In: Coulter, G.W. (Ed.), Lake Tanganyika and its Life. British Museum (Natural History) Publications — Oxford University Press, pp. 7–48.
Trewavas, E. (1974) The freshwater fishes of rivers Mungo and Meme and Lakes Kotto, Mboandong and Soden, west Cameroon. Bulletin of the British Museum (Natural History), Zoology, 26, 331–419, pls. 1–5.
Vigliotta, T.R. (2008) A phylogenetic study of the African catfish family Mochokidae (Osteichthyes, Ostariophysi, Siluriformes), with a key to genera. Proceedings of the Academy of Natural Sciences of Philadelphia, 157, 73–136.
Whitehead, P.J.P. (1958) A new species of Chiloglanis (Pisces, Mochocidae) in Kenya. Annals and Magazine of Natural History (Series 13), 1, 197–208.