Petrocephalus longicapitis, Kramer & Bills & Skelton & Wink, 2012

Kramer, Bernd, Bills, Roger, Skelton, Paul & Wink, Michael, 2012, A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species, Journal of Natural History 46 (35 - 36), pp. 2179-2258 : 2190-2191

Petrocephalus longicapitis sp. nov.

SAIAB 85916 Holotype, 19fish, 8.4 cm SL, Upper Zambezi River at Katima Mulilo, East Caprivi, Namibia, rocks in middle of river (opposite boat landing), approx. 17 ◦ 29 ′ 30 ′′ S, 24 ◦ 16 ′ 18 ′′ E, 10 September 1993, coll. F.H. Van der Bank and B. Kramer,

Paratypes: SMF 28265(27), 3.8–9.0 cm SL (one of which 2.8 cm SL) ; SAIAB 85911 (2), 25fish, 26fish, 8.4–8.5 cm SL ; SAIAB 85917 (2), 14fish, 16fish, 8.0– 8.4 cm SL ; SAIAB 85918 (3), 37fish, 38fish, 43fish, 7.6–7.9 cm SL; all from same location, 10–13 September 1993, water conductivity and temperature, 81 µS / cm, 21.8 ◦ C, SL from 28 –105 mm, coll. F.H. Van der Bank and B. Kramer ,

Non-types: ZSM 38657(1), L29isi, 10.3 cm SL, Lisikili backwater of Zambezi downstream of Katima Mulilo , 17 ◦ 29 ′ S, 24 ◦ 26 ′ E, 6 March 1994, 56.1 µS / cm and 26.8 ◦ C, gravid female, coll. F.H. Van der Bank and B. Kramer ,

Non-types: ZSM 38658(1), N53ak, 9.5 cm SL, specimen from Kwando River, Nakatwa , 18 ◦ 06 ′ S, 23 ◦ 23 ′ E, 9 March 1994, 130 µS / cm and 24.9 ◦ C, gravid female, coll. F.H. Van der Bank and B. Kramer ,

Non-types: SAIAB 85909 (3), Ven 02, Ven 03, Ven 09, 8.1–9.1 cm SL, from Zambezi rapids at Wenela just upstream of Katima Mulilo (border post to Zambia; 17 ◦ 29 ′ 21.5 ′′ S, 24 ◦ 15 ′ 33 ′′ E, 9 September 1997, coll. F.H. Van der Bank and B. Kramer,

Non-types: SAIAB 041208 (5), 6.1–7.3 cm SL, Zambia, North West Province , E Lumwana, confluence of Mwambezhi and East Lumwana Rivers (Upper Kabompo / Zambezi system), off Mwinilunga-Solwezi road, 12 ◦ 15 ′ S, 25 ◦ 40 ′ E, 31 July 1983, coll. R. Bills ,

Non-types : SAIAB 041025 (1), 3.6 cm SL, Zambia, North West Province , Off Solwezi- Mwinilunga Road , Zambezi River system, Kabompo River, Lumwana River, 12 ◦ 15 ′ S, 25 ◦ 40 ′ E, 31 July 1983, coll. R. Bills ,

Non-types : SAIAB 042559 (18), 4.1–10.4 cm SL, specimens of Petrocephalus from Zambia, below dam and fish ladder, Kafue / Zambezi River system, Mwekera Stream, 12 ◦ 40 ′ S, 28 ◦ 30 ′ E, 1 July 1983, coll. R. Bills ,

Non-types : SAIAB 41224 (4), 10.2–11.0 cm SL, specimens of Petrocephalus from Zambia, Kafue System, Mwekera Stream pool below waterfalls, 12 ◦ 40 ′ 00 ′′ S, 28 ◦ 30 ′ 00 ′′ E, 4 July 1983, coll. R. Bills ,

Non-types : SAIAB 040074 (1), 7.7 cm SL, Petrocephalus , Zambia, East Lunga River , Kafue / Zambezi River system, Lunga River, 14 ◦ 00 ′ S, 26 ◦ 30 ′ E, 17 April 1983, coll. R. Bills .