Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa
Authors
John P. Sullivan1, Sébastien Lavoué2, Carl D. Hopkins1,3 1 Cornell University Museum of Vertebrates, 159 Sapsucker Woods Road, Ithaca, New York 14850 USA 2 Institute of Oceanography, NationalTaiwan University, Roosevelt Road,Taipei 10617,Taiwan 3 Department of Neurobiology and Behavior, Cornell University, Ithaca, New York 14853 USA Corresponding author: John P. Sullivan (jpsullivan@cornell.edu) Academiceditor: N.Bogutskaya | Received9November2015 | Accepted20December2015 | Published8February2016 http://zoobank.org/BBDC72CD-2633-45F2-881B-49B2ECCC9FE2 Citation: Sullivan JP, Lavoué S, Hopkins CD (2016) Cryptomyrus: a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa. ZooKeys 561: 117–150. doi: 10.3897/ zookeys.561.7137
Figure 3. Some mormyrid species used for morphological comparison in this study. A Ivindomyrus marchei female, 135 mm SL, CUMV 98172, tag no. JPS-1233, Sébé River, Ogooué-Lolo, Gabon B Ivin- domyrus opdenboschi female, 160 mm SL, CUMV 96829, tag no. JPS-1057, Ivindo River at Loa Loa, Ogooué-Ivindo, Gabon C Boulengeromyrus knoepferi juvenile 107 mm SL, CUMV 96838, tag no. JPS-1055, Ivindo River at Loa Loa, Ogooué-Ivindo, Gabon D Marcusenius moorii female, 147 mm SL, CUMV 96836, tag no. JPS-1110, Ogooué River at Franceville, Haut-Ogooué, Gabon E Paramormy- rops sp. (undescribed species) female, 100 mm SL, CUMV 98119, tag no. JPS-1148, Moumba Creek, Ogooué-Lolo, Gabon F Stomatorhinus walkeri female 95 mm SL, CUMV 80227, tag no. 2814, Diengui Creek, Moyen-Ogooué, Gabon G Hippopotamyrus castor female, 122 mm SL, CUMV 89955, tag no. 6018, Sanaga River at Nachtigal Falls, Centre, Cameroon H Cyphomyrus psittacus female, 109 mm SL, CUMV 96767, tag no. JPS-0438, Congo River at Yangambi, Orientale, D.R. Congo.
Abstract
We use mitochondrial and nuclear sequence data to show that three weakly electric mormyrid fsh speci- mens collected at three widely separated localities in Gabon, Africa over a 13-year period represent an un- recognized 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 squa- mation, morphometrics, and dental attributes. Cryptomyrus ogoouensis, new species, is diferentiated from its single congener, Cryptomyrus ona, new species, by the possession of an anal-fn origin located well in advance of the dorsal fn, a narrow caudal peduncle and caudal-fn lobes nearly as long as the peduncle. In C. ona, the anal-fn origin is located only slightly in advance of the dorsal fn, the caudal peduncle is deep and the caudal-fn 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 fsh diversity in West-Central Africa. We present a revised key to the mormyrid genera of Lower Guinea.
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Cryptomyrus- a new genus of Mormyridae (Teleostei, Osteoglossomorpha) with two new species from Gabon, West-Central Africa.pdf