01670nas a2200157 4500008004100000245014900041210006900190260001200259300001400271490000700285520111800292100001401410700001801424700002201442856004801464 1997 eng d00aA systematic revision of the large-scaled Marcusenius with description of a new species from Cameroon (Teleostei; Osteoglossomorpha; Mormyridae)0 asystematic revision of the largescaled Marcusenius with descript c10/1997 a1645-16820 v313 a

Nine out of 37 recognized species in the genus Marcusenius have eight large circumpeduncular scales rather than 12 or 16, which is more typical of the genus. They are: M. dundoensis, M. fuscus, M. ghesquierei, M. intermedius, M. kutuensis, M. lambouri, M. moorii, M. paucisquamatus and M. schilthuisiae. All nine are restricted to West-Central and Central Africa. A detailed morphometric analysis could not distinguish differences between M. moorii, M. paucisquamatus and M. lambouri. Therefore they are considered as synonyms with M. morrii as the senior synonym. The systematic status of M. intermedius is uncertain owing to the existence of only three specimens. Within this species complex a new species, Marcusenius sanagaensis, is described from the Sanaga River basin in Cameroon. It differs from all the others in the number of scales on the lateral line and in the extent of the broad dark band between the anterior base of the dorsal fin and the anterior base of the anal fin. All valid Marcusenius species with eight circumpeduncular scales are redescribed and a key to these species is given.

1 aBoden, G.1 aTeugels, G.G.1 aHopkins, Carl, D. uhttps://mormyrids.myspecies.info/en/node/6400634nas a2200145 4500008004100000245023000041210006900271300001200340490000700352100001800359700001600377700002900393700001800422856004800440 2007 eng d00aAllopatric 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)0 aAllopatric differentiation in the Marcusenius macrolepidotus spe a647-7080 v411 aKramer, Bernd1 aSkelton, P.1 avan der Bank, F., Herman1 aWink, Michael uhttps://mormyrids.myspecies.info/en/node/3601579nas a2200133 4500008004100000245017300041210006900214260001200283300001400295490000700309520105700316100002401373856004801397 2012 eng d00aPetrocephalus Marcusen, 1854 (Osteoglossomorpha: Mormyridae) of the Bangweulu-Mweru ecoregion (Luapula River system, Congo basin), with the description of a new species0 aPetrocephalus Marcusen 1854 Osteoglossomorpha Mormyridae of the  c09/2012 a2159-21780 v463 aA recent collection of African electric fish of the genus Petrocephalus from the Bangweulu-Mweru ecoregion of the Congo basin comprises two endemic species, Petrocephalus squalostoma (Boulenger, 1915), which was previously known only from its type specimens and another specimen, and a new species described herein as Petrocephalus frieli sp. nov. An exclusive set of morphological characters distinguishes P. frieli sp. nov. from P. squalostoma and all other species of Petrocephalus from the Congo basin. Petrocephalus frieli sp. nov. can further be distinguished from the East African Petrocephalus catostoma catostoma (Günther, 1866) in having only 12 circumpenduncular scales (versus 15/16 in P. c. catostoma). A molecular phylogenetic analysis confirms the distinctiveness of P. squalostoma and P. frieli sp. nov. among a sampling of 18 species of Petrocephalus. Previous reports of Petrocephalus simus Sauvage, 1879 from the Bangweulu-Mweru ecoregion probably represent misidentifications and the occurrence of P. c. catostoma is not confirmed.1 aLavoué, Sébastien uhttps://mormyrids.myspecies.info/en/node/1500540nas a2200145 4500008004100000022001400041245015200055210006900207260001100276300001600287490000700303100001800310700001800328856004800346 2010 eng d a0022-293300aA new species of Slender Stonebasher within the Hippopotamyrus ansorgii complex from the Cunene River in southern Africa (Teleostei: Mormyriformes)0 anew species of Slender Stonebasher within the Hippopotamyrus ans c9/2010 a2213 - 22420 v441 aKramer, Bernd1 aSwartz, Ernst uhttps://mormyrids.myspecies.info/en/node/2301509nas a2200121 4500008004100000245020200041210006900243490000700312520097300319100001801292700002901310856004801339 2011 eng d00aThe Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei)0 aVictoria Falls a species boundary for the Zambezi Parrotfish Cyp0 v453 a

Cyphomyrus discorhynchus occurs in the Zambezi River and in the linked systems of the Kwando and the Okavango. We collected specimens from both above and below the Victoria Falls and recorded Electric Organ Discharges. We found a marked degree of anatomical differentiation among the specimens from the Zambezi delta to the Victoria Falls that represents a subspecific, geographical cline, reflecting the great length (1400 km) and high ecological diversity of that river section (Lower and Middle Zambezi). We confirm that the populations above the Falls (i.e. Upper Zambezi, Kwando and Okavango) are differentiated from those below, possessing fewer dorsal fin rays (a median of 30-31 rather than 33-34). The waveforms of the electric organ discharge pulses have four phases and show geographic variation but were briefer for specimens from below the Falls. We resurrect Cyphomyrus cubangoensis (Pellegrin, 1936) for the Upper Zambezi/Kwando/Okavango system

1 aKramer, Bernd1 avan der Bank, F., Herman uhttps://mormyrids.myspecies.info/en/node/2202001nas a2200241 4500008004100000022001900041245025000060210006900310260001200379300001600391490000700407520111200414653002601526653003001552653002301582653001801605653001601623100001801639700001701657700001601674700001801690856005101708 2012 eng d aISSN 0022-293300aA 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 species0 acritical revision of the churchill snoutfish genus Petrocephalus c09/2012 a2179–22580 v463 a

We morphologically and genetically studied the southern African electric fish Petrocephalus catostoma, or churchill, and its six nominal species, five of which by synonymization (three valid subspecies). We reinstate the synonymized species, and recognize Petrocephalus tanensis (Whitehead and Greenwood, 1959) from the Tana River in Kenya, also using electric organ discharges. The Okavango delta (Botswana) is inhabited by Petrocephalus okavangensis sp. nov. and Petrocephalus magnitrunci sp. nov., and the Namibian Cunene River by Petrocephalus magnoculis sp. nov. We recognize Petrocephalus petersi sp. nov. for the Lower Zambezi River (Mozambique), and Petrocephalus longicapitis sp. nov. for the Upper Zambezi River (Namibia). The Lufubu River in Northern Zambia is inhabited by Petrocephalus longianalis sp. nov. For the southern churchill, Petrocephalus wesselsi Kramer and Van der Bank, 2000, we confirm intraspecific and interspecific differentia- tion. Sequence data from mitochondrial DNA confirm differentiation of two new western and two eastern species, forming mutual sister groups.

10aallopatric speciation10aelectric organ discharges10amolecular genetics10amorphometrics10aSystematics1 aKramer, Bernd1 aBills, Roger1 aSkelton, P.1 aWink, Michael uhttp://dx.doi.org/10.1080/00222933.2012.70845200615nas a2200145 4500008004100000022001400041245021000055210006900265260001200334300001100346100001800357700002900375700001800404856004700422 2014 eng d a1464-526200aMarked 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 rivers0 aMarked differentiation in a new species of dwarf stonebasher iPo c12/2013 a1 - 351 aKramer, Bernd1 avan der Bank, F., Herman1 aWink, Michael uhttps://mormyrids.myspecies.info/en/node/601677nas a2200157 4500008004100000022001400041245020200055210007100257260001200328300001600340490000700356520107200363100001801435700001801453856004801471 2013 eng d a1464-526200aEast–west differentiation in the Marcusenius macrolepidotus species complex in Southern Africa: the description of a new species for the lower Cunene River, Namibia (Teleostei: Mormyridae)0 aEast–west differentiation in the iMarcusenius macrolepidotusi sp c09/2013 a2327 - 23620 v473 a

This paper critically compares the Southern African bulldog fish species Marcusenius macrolepidotus (Peters, 1852), inhabiting the eastern Lower Zambezi River, and Marcusenius altisambesi Kramer et al., 2007, inhabiting the central Upper Zambezi River, with bulldog fish samples from the western lower Cunene River, a 2600-km range from the Indian Ocean to the Atlantic. The three species or forms are well differentiated in morphology and molecular genetics, and dif- ferentiation is also present in electric organ discharges. Marcusenius altisambesi and the Cunene sample, which we recognize as Marcusenius multisquamatus sp. nov., are closely related and form a sister taxon to M. macrolepidotus. This result is based on the analysis of mitochondrial cytochrome b sequences and genomic Inter-simple-sequence-repeat fingerprinting. Morphological adaptations to life in a torrential escarpment river seem to be present in M. multisquamatus sp. nov. when compared with M. altisambesi, which lives in a reservoir river that periodi- cally floods the savannah.

1 aKramer, Bernd1 aWink, Michael uhttps://mormyrids.myspecies.info/en/node/11