Allopatric differentiation in the Marcusenius macrolepidotus species complex in southern and eastern Africa: the resurrection of M. pongolensis and M. angolensis, and the description of two new species (Mormyridae, Teleostei) Author Kramer, Bernd Author Skelton, Paul Author Bank, Herman Van Der Author Wink, Michael text Journal of Natural History 2007 2007-06-30 41 9 - 12 647 708 http://dx.doi.org/10.1080/00222930701250987 journal article 10.1080/00222930701250987 1464-5262 4658362 Marcusenius altisambesi , sp.n. Holotype . SAIAB 79135 (specimen L39isi), SL 15.3 cm , total length 17.5 cm , Namibia : Caprivi Strip : Lisikili on side arm of Upper Zambezi River , 17 u 339S, 24 u 299E, 7 March 1994 , male, coll.: F.H. van der Bank and B. Kramer , collected within 2 m depth from surface. Paratypes . SAIAB 79136 (6) [L01isi, L06isi, L10isi, L19isi, L20isi, L26isi], ZSM 35085 (2) [L41isi, L40isi], ZSM 35086 (5) [L02isi, L04isi, L05isi, L12isi, L16isi], 5–7 March 1994 , same origin and collectors as holotype , SAIAB 79137 (3) [B5, ID62, ID69], ZSM 35097 (1) [ID30], also from a site at Lisikili, 17 u 32931.90S, 24 u 26917.70E, coll.: F.H. van der Bank and B. Kramer , 5–6 August 2004 , water conductivity and temperature, 75– 76 MS cm 21 , 18.2–20.0 u C, ZSM 35082 (2) [ID86, ID87)], paratypes , two specimens as in preceding paragraph but from nearby locality Kalimbeza, 17 u 32927.30S, 24 u 31926.20E, 7 August 2004 , similar water conductivity and temperature , - 104 specimens from the Upper Zambezi River System , East Caprivi , Namibia , size range 35–195 mm SL, smallest gravid female 113 mm SL (juveniles could not be sexed), some specimens from Kalimbeza presently alive in Aquarium : - SMF 28264 ( 22 specimens , voucher references: LXXisi, XX ranging from 01 to 50) from the Zambezi River , Lisikili backwater, 17 u 339S, 24 u 299E ( type locality), coll.: F.H. van der Bank and B. Kramer , 5–7 March 1994 , water conductivity and temperature, 56.1 MS cm 21 , 26.8 u C, 11 gravid females , - SMF 28264 ( 45 specimens , voucher references: NXXka or NXXXk (XX or XXX ranging from 54 to 126), ZSM 35084 (1) (specimen N123ka), from the Kwando River , Nakatwa, 18 u 069S, 23 u 239E, in Mudumu National Park , coll.: B. Kramer , 9–15 March 1994 , water conductivity and temperature, 130 MS cm 21 , 24.9 u C, eight gravid females, locality 12 on Figure 4 , - SMF 28264 (two specimens, voucher references: ‘‘7fish’’, 195 mm SL, female, and ‘‘11fish’’, 73 mm SL), from Kwando River, Nkasa Island (18 u 279S, 23 u 429E) in Mamili National Park, close to locality 12 on Figure 4 , coll.: F.H. van der Bank and B. Kramer, 9– 10 September 1993 , water conductivity and temperature, 108 MS cm 21 , 18–19 u C, not gravid, - 31 specimens , about 500 m from opposite Kalimbeza fishing camp, at downstream tip of small island between Lisikili side channel and main channel, coll.: F.H. van der Bank and B. Kramer , caught 21 August 1999 , water conductivity and temperature,84 MS cm 21 ,22 u C,size range 7.2– 13.3 cm SL, arrival live in Regensburg 2 September 1999 , EOD recording 28 September–7 October 1999 at 100 MS cm 21 water conductivity and 21 u C (EOD recording in Germany for quicker transport in Africa ), Figure 1K , presently alive , - 1 specimen from Kwando River , Kongola Bridge , 17 u 47926.70S, 23 u 20940.00E, 24 January 2001 , coll.: F.H. van der Bank & B. Kramer , ZSM 35083 (1) (specimen Kon08g) , - 63 specimens from the Okavango River , Botswana , totalling at least 10 males , male size range 110–181 mm SL, juvenile/female size range 54–169 mm SL: - SAIAB 79140 (9), ZSM 35079 (1), ZSM 35080 (3), ZSM 35081 (6) from the Okavango River, Makwena Lodge, near the township of Etsha no. 6, 19 u 079300S 22 u 229E, coll.: F.H. van der Bank , J. Engelbrecht and B. Kramer , 20–22 January 2001 , water conductivity and temperature, 37 MS cm 21 , 29.9–30.6 u C, voucher references: OkaXXv (XX integer numbers ranging from 04 to 52), at least nine males as determined by the presence of a kink in anal fin, locality 13 on Figure 4 , - SAIAB 79143 (6), ZSM 35096 (5), and 24 specimens presently alive in aquarium, from the Okavango River at Guma Lagoon, 18 u 57946.60S, 22 u 22925.30E, coll.: F.H. van der Bank and B. Kramer , 10–12 August 2004 , water conductivity and temperature 38 MS cm 21 and 21.4 u C, voucher references: Guma00XX (X for integer numbers ranging from 4 to 64), one male, close to locality 13 on map of Figure 4 , Figure 1J , - SAIAB 79141 (1), ZSM 35095 (1), and seven specimens presently alive in aquarium, details as in preceding paragraph, except for locality at Makwena, 19 u 03913.850S,22 u 22942.60E, 12 August 2004 , voucher references Makw00XX (X ranging from 0 to 28).