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) Pollimyrus castelnaui (Boulenger, 1911) . Syntypes BMNH 1910.5.31.11-12 (2) from Okavango River , Botswana . (2) Pollimyrus castelnaui . ZSM 39534, 35 specimens from Makwena River Camp , Okavango , 19 ◦ 03 ′ 16.2 ′′ S, 22 ◦ 22 ′ 51.3 ′′ E, field codes Oka 01v–Oka03v, Oka 05v–Oka07v, Oka 13v–Oka17v, AOka18v, BOka18v, Oka 19v, AOka20v, BOka20v, Oka 22v–Oka31v, AOka32v, BOka32v, Oka 33v–Oka38v, Oka 40v, 20–21 January 2001 , water conductivity, 37 µS / cm, 29.9 ◦ C, coll. F.H. Van der Bank , J. Engelbrecht, B. Kramer.