@article {10.3897/zookeys.1129.90287, title = {Mitogenome recovered from a 19th Century holotype by shotgun sequencing supplies a generic name for an orphaned clade of African weakly electric fishes (Osteoglossomorpha, Mormyridae)}, journal = {ZooKeys}, volume = {1129}, year = {2022}, pages = {163-196}, publisher = {Pensoft Publishers}, abstract = {

Heteromormyrus Steindachner, 1866, a genus of Mormyridae (Teleostei: Osteoglossomorpha), has been monotypic since the description of Heteromormyrus pauciradiatus (Steindacher, 1866) from a single specimen. No type locality other than \“Angola\” was given and almost no specimens have been subsequently identified to this species. In order to investigate the relationship of this taxon to fresh specimens collected in Angola and elsewhere, whole genome paired-end sequencing of DNA extracted from the holotype specimen of Heteromormyrus pauciradiatus was performed and a nearly complete mitogenome assembled from the sequences obtained. Comparison of cytochrome oxidase I and cytochrome b sequences from this mitogenome to sequences from recently collected material reveal that Heteromormyrus pauciradiatus is closely related to specimens identified as Hippopotamyrus ansorgii (Boulenger, 1905), Hippopotamyrus szaboi Kramer, van der Bank \& Wink, 2004, Hippopotamyrus longilateralis Kramer \& Swartz, 2010, as well as to several undescribed forms from subequatorial Africa collectively referred to in the literature as the \“Hippopotamyrus ansorgii species complex\” and colloquially known as \“slender stonebashers.\” Previous molecular phylogenetic work has shown that these species are not close relatives of Hippopotamyrus castor Pappenheim, 1906, the type species of genus Hippopotamyrus Pappenheim, 1906 from Cameroon, and are thus misclassified. Hippopotamyrus ansorgii species complex taxa and another species shown to have been misclassified, Paramormyrops tavernei (Poll, 1972), are placed in genus Heteromormyrus and one genetic lineage from the Kwanza and Lucala rivers of Angola are identified as conspecific Heteromormyrus pauciradiatus. Three additional new combinations and a synonymy in Mormyridae are introduced. The morphological characteristics and geographical distribution of the genus Heteromormyrus are reviewed. The electric organ discharges (EODs) of Heteromormyrus species are to be treated in a separate study.

}, keywords = {Angolan freshwater fishes, Heteromormyrus, Hippopotamyrus, historical DNA, mitogenomics, mormyrid, museomics, slender stonebasher}, issn = {1313-2989}, doi = {10.3897/zookeys.1129.90287}, url = {https://doi.org/10.3897/zookeys.1129.90287}, author = {John P. Sullivan and Carl D. Hopkins and Stacy Pirro and Rose Peterson and Albert Chakona and Tadiwa I. Mutizwa and Christian Mukweze Mulelenu and Fahad H. Alqahtani and Emmanuel Vreven and Casey B. Dillman} } @article {497, title = {Marcusenius kaninginii, a new species of elephantfish from the Lowa River basin, Democratic Republic of the Congo (Osteoglossiformes: Mormyridae)}, journal = {Ichthyological Explorations of Freshwaters}, volume = {26}, year = {2016}, month = {03/2016}, pages = {341{\textendash}352}, chapter = {341}, abstract = {

Marcusenius kaninginii, a new Marcusenius species with eight large circumpeduncular scales, is described from the Lowa River, a right bank tributary of the Lualaba (Upper Congo basin). It is distinguished from all other Mar- cusenius species with eight circumpeduncular scales by the following unique combination of characters: 43-47 lateral line scales; 18-23 dorsal-fin rays; 27-30 anal-fin rays; 42-44 vertebrae; a relatively shallow body at the anterior base of the anal fin (depth 25.0-28.6 \% SL); a deep caudal peduncle (39-57 \% of caudal peduncle length); and a short pectoral fin (15.5-19.1 \% SL). Additionally, it has a typical dark-brown body coloration with a black transversal bar between the anterior parts of the dorsal and anal fins, and a black horizontal band along the lat- eral line from just behind the opercle up to the transversal bar.


Marcusenius kaninginii, une nouvelle espèce de Marcusenius à huit écailles autour du pédoncule caudal, est décrite de la rivière Lowa, un affluent de la rive droite du Lualaba (bassin du Congo Supérieur). Il se distingue des autres Marcusenius à huit écailles autour du pédoncule caudal par la combinaison unique des caractères suivants: 43-47 écailles sur la ligne latérale; 18-23 rayons à la dorsale; 27-30 rayons à l\’anale; 42-44 vertèbres; corps relativement moins élevé à la base antérieure de la nageoire anale (hauteur 25,0-28,6 \% LS); un pédoncule caudal haut, (39- 57 \% de la longueur du pédoncule caudal); et une nageoire pectorale courte (15,5-19,1 \% LS). De plus, il présente une coloration corporelle typique noire-brunâtre avec une bande transversale noire entre les parties antérieures des nageoires dorsale et anale ainsi qu\’une bande noire horizontale le long de la ligne latérale allant de l\’opercule jusqu\’à la bande transversale.

}, issn = {0936-9902}, url = {https://pfeil-verlag.de/wp-content/uploads/2016/07/ief26_4_04.pdf}, author = {Kisekelwa, Tchalondawa and Boden, G. and Snoeks, Jos and Emmanuel Vreven} }