Marked differentiation in a new species of dwarf stonebasher, Pollimyrus cuandoensis sp. nov. (Mormyridae: Teleostei), from a contact zone with two sibling species of the Okavango and Zambezi rivers Author Kramer, Bernd University of Regensburg, Zoological Institute, D- 93040 Regensburg, Germany; Author Bank, Herman van der Department of Zoology, University of Johannesburg, African Centre for DNA Barcoding, Johannesburg, South Africa; Author Wink, Michael Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, D- 69120 Heidelberg, Germany text Journal of Natural History 2013 J. Nat. Hist. 2013-12-04 48 7 - 8 429 463 http://dx.doi.org/10.1080/00222933.2013.807950 journal article 7021 10.1080/00222933.2013.807950 a1053c94-58d2-4e68-80f8-fc983d11ee88 1464-5262 4631571 FB644B21-04F6-44F8-AEB6-8DC09268C17C Pollimyrus castelnaui (Boulenger, 1911) (1) All of the above under 1.1 (2), plus: (2) Four specimens from Guma Lagoon , Okavango Delta , Thoage River , 18 ◦ 57 ′ 46.6 ′′ S, 22 ◦ 22 ′ 25.3 ′′ E, 10 August 2004 , field codes Guma (no no.), Guma 132– Guma 134, water conductivity 38 µS / cm, 21.4 ◦ C, coll. F.H. Van der Bank and B. Kramer. (3) Nine specimens from Makwena , Okavango , Thoage River , 19 ◦ 03 ′ 13.8 ′′ S, 22 ◦ 22 ′ 42.6 ′′ E, 11 August 2004 , field codes Makwena 163, Makwena 164, Makwena 166, Makwena 169, Makwena 170, Makwena 172– Makwena 175, same water and temperature, coll. F.H. Van der Bank and B. Kramer.