Cyphomyrus discorhynchus ( Peters, 1852 )

Kramer, Bernd & Bank, F. Herman Van der, 2011, The Victoria Falls, a species boundary for the Zambezi Parrotfish, Cyphomyrus discorhynchus (Peters, 1852), and the resurrection of Cyphomyrus cubangoensis (Pellegrin, 1936) (Mormyridae: Teleostei), Journal of Natural History 45 (43 - 44), pp. 2669-2699: 2689-2690

publication ID

http://doi.org/ 10.1080/00222933.2011.597945

persistent identifier

http://treatment.plazi.org/id/216FC728-FFD9-EF37-7383-2723ABF6C983

treatment provided by

Felipe

scientific name

Cyphomyrus discorhynchus ( Peters, 1852 )
status

 

Cyphomyrus discorhynchus ( Peters, 1852)  

( Figure 1G View Figure 1 )

Nominal species in boldface.

Mormyrus discorhynchus Peters, 1852: 275   .

Petrocephalus discorhynchus: Marcusen 1864: 150   .

Mormyrus (Petrocephalus) discorhynchus: Sauvage 1880: 27   .

Marcusenius discorhynchus: Boulenger 1898: 797   .

Cyphomyrus discorhynchus: Myers 1960: 125   , Van der Bank and Kramer 1996: 287; Skelton 2001: 97; Lavoué et al. 2003: 288; Kramer and Swartz 2010: 228, fig. 8.

Hippopotamyrus discorhynchus: Taverne 1971a: 104   ; Seegers 1996: 68.

Marcusenius tanganicanus Boulenger, 1906: 455   , pl. 30, fig. 1; Boulenger 1909: 81 (synonymy with Mormyrus discorhynchus   ).

Marcusenius smithersi Määr, 1962   .

Cyphomyrus smithersi: Jubb 1967: 33  

Hippopotamyrus smithersi: Taverne 1971a: 104   .

Material examined

See Material and methods section.

Type specimens. ZMB 3.674 View Materials , lectotype. Paralectotypes: individuals ZMB 3.673 View Materials , ZMB 3.675 View Materials , ZMB 3.676 View Materials . ZMB 23.374 View Materials , one paralectotype plus remnants of a dissected specimen; all collected by W.C. Peters.   Lectotype and paralectotypes designated by Seegers (1996: 69).

Type locality. “Mossambique”. In his 1868 publication, Peters specified that the origin of his specimens was “Tette” (present spelling Tete) on the Zambezi , and “the Licuare in Boror” (the Licuare is a short coastal river on the northern periphery of the Zambezi delta, discharging into the Indian Ocean at Quelimane ; all Mozambique). Tete is below the Cahora Bassa dam, and separated from the Indian Ocean by 400 km   .

Diagnosis

nD, median 33–34 (range 28–36); nA, median 24–25 (range 23–27); SPc, median 12 (range 12–13); SLS, median 64–69 (range 57–72); LD, mean 0.2977 –0.3129 (range 0.2701 –0.3239) of SL; LA, mean 0.2040 –0.2124 (range 0.1844 –0.2263) of SL; CPL, mean 0.2154 –0.2215 (range 0.2066 –0.2405) of SL; CPD, mean 0.2952 –0.3002 (range 0.2657 –0.3380) of CPL; BD, mean 0.2841 –0.3530 (range 0.2464 –0.3407) of SL; PDL, mean 0.5631 –0.5779 (range 0.5455 –0.6065) of SL; HL, mean, 0.2197 –0.2373 (range 0.2168 –0.2639) of SL. Bipolar EOD, of 130 µs duration (n = 1).

Remarks

Seegers (1996) gives a lively description of ecology and biology of specimens caught on or near Lake Rukwa.

For distinguishing between specimens of C. discorhynchus   and C. cubangoensis   , the most useful anatomical characters are: longer LD, longer LA, higher number of nD and nA, higher CPD/CPL in C. discorhynchus   than C. cubangoensis   .

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Osteoglossiformes

Family

Mormyridae

Genus

Cyphomyrus

Loc

Cyphomyrus discorhynchus ( Peters, 1852 )

Kramer, Bernd & Bank, F. Herman Van der 2011
2011
Loc

Hippopotamyrus discorhynchus:

Seegers L 1996: 68
Taverne L 1971: 104
1971
Loc

Hippopotamyrus smithersi:

Taverne L 1971: 104
1971
Loc

Cyphomyrus smithersi:

Jubb RA 1967: 33
1967
Loc

Cyphomyrus discorhynchus: Myers 1960: 125

Kramer B & Swartz ER 2010: 228
Lavoue S & Sullivan J & Hopkins CD 2003: 288
Skelton P 2001: 97
Van der Bank FH & Kramer B 1996: 287
Myers GS 1960: 125
1960
Loc

Marcusenius tanganicanus

Boulenger GA 1909: 81
Boulenger GA 1906: 455
1906
Loc

Marcusenius discorhynchus:

Boulenger GA 1898: 797
1898
Loc

Mormyrus (Petrocephalus) discorhynchus: Sauvage 1880: 27

Sauvage HE 1880: 27
1880
Loc

Petrocephalus discorhynchus:

Marcusen J 1864: 150
1864
Loc

Mormyrus discorhynchus

Peters WCH 1852: 275
1852