Abstract
This paper examines the alpha level taxonomy of the genus Holohalaelurus Fowler 1934 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae), which is endemic to southern and east Africa. A novel species identification key is presented for Holohalaelurus, and a comprehensive review of the taxonomy (including type material and synonyms) and distribution of all taxa is presented. Holohalaelurus regani (Gilchrist 1922) is restricted to southern Africa and the taxa that occur in tropical east Africa are discrete taxonomic units, resulting in the resurrection of H. melanostigma Norman 1939, and two new species, which are described here. Holohalaelurus polystigma (Regan 1921) is shown to be a junior synonym of H. punctatus (Gilchrist 1914), the validity of the type series for H. regani is discussed, and neotypes are designated for H. regani and H. punctatus. The genus Holohalaelurus contains the contemporary taxa H. punctatus (Gilchrist 1914), H. regani (Gilchrist 1922), H. melanostigma Norman 1939, H. favus sp. nov., and H. grennian sp. nov.
References
Barnard, K.H. (1925) A monograph of the marine fishes of South Africa. Part I (Amphioxus, Cyclostomata, Elasmobranchii, and Teleostei — Isospondyli to Heterosomata). Annals of the South African Museum, 21(1), 1–418.
Barnard, K.H. (1927) A monograph of the marine fishes of South Africa. Part II. (Teleostei-Discocephali to end. Appendix). Annals of the South African Museum, 21(2), 419–1065.
Bartholomew, J. (Ed.). (1956) The Times Atlas of the World. Volume IV. Southern Europe and Africa. Mid-Century Edition. The Times Publishing Company Ltd., London.
Bass, A.J. (1973) Analysis and description of variation in the proportional dimensions of Scyliorhinid, Carcharhinid and Sphyrnid sharks. Investigational Report of the Oceanographic Research Institute, 32, 1–28.
Bass, A.J. (1986) Scyliorhinidae. In Smith, M.M. & Heemstra, P.C. (Ed.), Smiths' Sea Fishes. Macmillan South Africa (Publishers) (Pty) Ltd, Johannesburg, 88–95.
Bass, A.J., D'Aubrey, J.D. & Kistnasamy, N. (1975) Sharks of the East Coast of Southern Africa. II. The Families Scyliorhinidae and Pseudotriakidae. Investigational Report of the Oceanographic Research Institute, 37, 1–64.
Bigelow, H.B. & Schroeder, W.C. (1948) Fishes of the North West Atlantic. Part I. Lancelets, Cyclostomes, and Sharks. Chapter 3. Sharks., Memoir Sears Foundation for Marine Research. Vol 1., 59–546.
Compagno, L.J.V. (1984a) FAO Species Catalogue. Vol. 4. Sharks of the World. An Annotated and Illustrated Catalogue of Shark Species Known to Date. Part 1. Hexanchiformes to Lamniformes. FAO Fisheries Synopsis No.125, Vol.4 , Part 1, 1–249.
Compagno, L.J.V. (1984b) FAO Species Catalogue. Vol. 4. Sharks of the World. An Annotated and Illustrated Catalogue of Shark Species Known to Date. Part 2. Carcharhiniformes. FAO Fisheries Synopsis No.125, Vol.4 , Part 2, 251–655.
Compagno, L.J.V. (1986) Sharks of the Eastern Cape Coast, JLB Smith Institute of Ichthology, Grahamstown, 1–27.
Compagno, L.J.V. (1988) Sharks of the Order Carcharhiniformes, 1st Reprint (2003), The Blackburn Press, Caldwell, New Jersey, xii + 572pp.
Compagno, L.J.V. (1999) An overview of chondrichthyan systematics and biodiversity in southern Africa. Transactions of the Royal Society of South Africa, 54(1), 75–120.
Compagno, L.J.V. (2001) Sharks of the World. An Annotated and Illustrated Catalogue of Shark Species Known to Date. Volume 2. Bullhead, Mackerel and Carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes), FAO, Rome, 269pp.
Compagno, L J V., Dando, M. & Fowler, S L. (2005) Sharks of the World (Princeton Field Guides), Princeton University Press, New Jersey, 368pp.
Compagno, L.J.V., Ebert, D.A. & Cowley, P.D. (1991) Distribution of offshore demersal cartilaginous fish (Class Chondrichthyes) off the west coast of southern Africa, with notes on their systematics. South African Journal of Marine Science, 11, 43–139.
Compagno, L.J.V., Ebert, D.A. & Smale, M.J. (1989) Guide to the Sharks and Rays of Southern Africa, New Holland (Publishers) Ltd, London, 158pp.
Compagno, L.J.V. & Human, B.A. (2003) Checklist of chondrichthyans for the subequatorial African region, Atlantic, Indian, and Antarctic Oceans. SRC Technical Report, SRC20030718, 43pp.
Compagno, L.J.V. & Smale, M.J. (1989) Sharks and the Natal Sharks Board. Part 1: Sharks and their relatives. In Payne, A.I.L. & Crawford, R.J.M. (Ed.), Oceans of life off Southern Africa. Vlaeberg Publishers, Cape Town, 198–208.
Eschmeyer, W.N. (1998) Catalog of Fishes. California Academy of Sciences, San Francisco, 2905pp.
Fowler, H.W. (1925) Fishes from Natal, Zululand, and Portuguese East Africa. Proceedings of the Academy of Natural Sciences of Philadelphia, 77, 187–268.
Fowler, H.W. (1926) Descriptions of three unusual fishes from the Natal coast. Annals of the Natal Government Museum, 5(3), 399–402.
Fowler, H W. (1934) Descriptions of new fishes obtained 1907 to 1910, chiefly in the Philippine Islands and adjacent seas. Proceedings of the Academy of Natural Sciences of Philadelphia, 85 (proceedings of 1933), 233–367.
Fowler, H.W. (1935) South African fishes received from Mr. H. W. Bell-Marley in 1935. Proceedings of the Academy of Natural Sciences of Philadelphia, 87, 361–408.
Fowler, H.W. (1941) The fishes of the groups Elasmobranchii, Holocephali, Isospondyli, and Ostariophysi obtained by United States Bureau of Fisheries Steamer "Albatross" in 1907 to 1910, chiefly in the Philippine Islands and adjacent seas. Bulletin of the United States National Museum, 100(13), 879pp.
Gilchrist, J.D.F. (1914) Description of three new South African fishes. Marine Biological Report, No II. Cape Town, 128–131.
Gilchrist, J.D.F. (1922) Deep-sea fishes procured by the S.S. "Pickle" (Part I). Special Report No. III. Report of the Fisheries and Marine Biological Survey, Union of South Africa, 2(3), 1–39.
Human, B.A. (2003) Taxonomy and Molecular Phylogeny of some Southern African Catsharks (Scyliorhinidae; Chondrichthyes), PhD Thesis, University of Cape Town, Cape Town, xii, 257pp + appendices.
Human, B.A. (2006) A taxonomic revision of the catshark genus Poroderma Smith, 1837 (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Zootaxa, 1229, 1–32.
International Commission on Zoological, Nomenclature. (1999) International Code of Zoological Nomenclature, International Trust for Zoological Nomenclature, London, xxix + 306pp.
Lampe, M. (1914) Die fische der Deutschen sudpolar-expedition 1901–1903. Deutsche Sudpolar- Expedition, 15(7), 201–256.
Norman, J.R. (1939) Fishes. The John Murray Expedition 1933–34 Scientific Reports, 7(1), 1–116.
Regan, C.T. (1921) New fishes from deep water off the coast of Natal. The Annals and Magazine of Natural History, ser. 9, 7(41), 412–420.
Richardson, A.J., Maharaj, G., Compagno, L.J.V., Leslie, R.W., Ebert, D.A. & Gibbons, M.J. (2000) Abundance, distribution, morphometrics, reproduction and diet of the Izak catshark. Journal of Fish Biology, 56, 552–576.
Séret, B. (1987) Halaelurus clevai, sp. n., a new species of catshark (Scyliorhinidae) from off Madagascar, with remarks on the taxonomic status of the genera Halaelurus Gill and Galeus Rafinesque. Special Publication of the JLB Smith Institute of Ichthyology, (44), 1–28.
Smith, J.L.B. (1949) The Sea Fishes of Southern Africa, Central News Agency, Ltd, South Africa, 550pp.
Springer, S. (1979) A revision of the catsharks, Family Scyliorhinidae. NOAA Technical Report NMFS Circular, 422, 1–152.
Thompson, W.W. (1914) Catalogue of fishes of the Cape Province. Marine Biological Report, No II. Cape Town, 132–167.