Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa
Open Access
- 8 February 2016
- journal article
- research article
- Published by Pensoft Publishers in ZooKeys
- Vol. 561 (561), 117-150
- https://doi.org/10.3897/zookeys.561.7137
Abstract
We use mitochondrial and nuclear sequence data to show that three weakly electric mormyrid fish specimens collected at three widely separated localities in Gabon, Africa over a 13-year period represent an unrecognized lineage within the subfamily Mormyrinae and determine its phylogenetic position with respect to other taxa. We describe these three specimens as a new genus containing two new species. Cryptomyrus, new genus, is readily distinguished from all other mormyrid genera by a combination of features of squamation, morphometrics, and dental attributes. Cryptomyrus ogoouensis, new species, is differentiated from its single congener, Cryptomyrus ona, new species, by the possession of an anal-fin origin located well in advance of the dorsal fin, a narrow caudal peduncle and caudal-fin lobes nearly as long as the peduncle. In C. ona, the anal-fin origin is located only slightly in advance of the dorsal fin, the caudal peduncle is deep and the caudal-fin lobes considerably shorter than the peduncle. Continued discovery of new taxa within the "Lower Guinea Clade" of Mormyridae highlights the incompleteness of our knowledge of fish diversity in West-Central Africa. We present a revised key to the mormyrid genera of Lower Guinea.Keywords
This publication has 38 references indexed in Scilit:
- GenSeq: An updated nomenclature and ranking for genetic sequences from type and non-type sourcesZooKeys, 2013
- Local and regional rarity in a diverse tropical fish assemblageProceedings. Biological sciences, 2013
- Determining Species Boundaries in a World Full of Rarity: Singletons, Species Delimitation MethodsSystematic Biology, 2011
- A new species of Slender Stonebasher within theHippopotamyrus ansorgiicomplex from the Cunene River in southern Africa (Teleostei: Mormyriformes)Journal of Natural History, 2010
- bold: The Barcode of Life Data System (http://www.barcodinglife.org)Molecular Ecology Notes, 2007
- AFLPs RESOLVE PHYLOGENY AND REVEAL MITOCHONDRIAL INTROGRESSION WITHIN A SPECIES FLOCK OF AFRICAN ELECTRIC FISH (MORMYROIDEA: TELEOSTEI)Evolution, 2004
- Hippopotamyrus ansorgii species complex in the Upper Zambezi River System with a description of a new species, H. szaboi (Mormyridae)Zoologica Scripta, 2003
- Morphological and Osteological Evidence for the Generic Position of Mormyrus kingsleyae in the Genus Brienomyrus (Teleostei: Mormyridae)Ichthyology & Herpetology, 1998
- A systematic revision of the large-scaledMarcuseniuswith description of a new species from Cameroon (Teleostei; Osteoglossomorpha; Mormyridae)Journal of Natural History, 1997
- The intermuscular bones and ligaments of teleostean fishesSmithsonian Contributions to Zoology, 1995