Coptobrycon Géry, 1966

Langeani, Francisco & Serra, Jane Piton, 2010, Coptobrycon bilineatus (Ellis, 1911) (Characiformes: Characidae): redescription and comments on its phylogenetic relationships, Neotropical Ichthyology 8 (4), pp. 727-736 : 728

publication ID

https://doi.org/ 10.1590/S1679-62252010000400004

DOI

https://doi.org/10.5281/zenodo.6493718

persistent identifier

https://treatment.plazi.org/id/2B6EF01C-FFDF-7557-FE9F-FB50FA906C88

treatment provided by

Carolina

scientific name

Coptobrycon Géry, 1966
status

 

Coptobrycon Géry, 1966 View in CoL View at ENA

Figs. 1-7 View Fig View Fig View Fig View Fig View Fig

Coptobrycon Géry, 1966: 226 View in CoL (type-species: Hasemania bilineata Ellis, 1911 View in CoL , by original designation and monotypy).

Diagnosis. Coptobrycon is easily distinguished from all other Characidae due to: a very peculiar dentary dentition, with only three, large, anterior, multicuspid and pedunculated, principal teeth in each half of the dentary ( Fig. 5 View Fig ; vs. four or more conical or cuspidate and not pedunculated teeth, except in the Cheirodontinae and Iguanodectinae , which have more than four pedunculated teeth); the absence of the nasal bone (vs. present); the presence of a straight, dark brown stripe slightly above the base of the anal fin ( Fig. 1 View Fig ), from vertical through its origin or slightly behind, continuing through the ventral portion of the caudal peduncle up to the base of the caudal fin (vs. absent). Furthermore, it can also be separated from all other Characidae , except Grundulus , by having the nasal pores separated by a non confluent space ( Fig. 2 View Fig ; vs. nasal pores very close and confluent); infraorbitals 4 and 6 (5, sometimes) absent ( Fig. 4 View Fig ; vs. present); infraorbital laterosensory canal greatly reduced, with pores inconspicuous or absent ( Fig. 4 View Fig ; vs. present); supraorbital laterosensory canal absent in posterior portion of the frontal (vs. present). Other useful diagnostic characters include: up to six olfactory rosette lamellae, turned to the posterior portion of the nasal canal ( Fig. 3 View Fig ; vs. more than ten lamellae, generally more than fifteen, concentrically arranged; except in Grundulus and Xenurobrycon ); adipose fin absent ( Fig. 1 View Fig ; vs. present; except in Grundulus , Gymnocharacinus bergi , Hasemania , some Hyphessobrycon species , and Spintherobolus ).

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Characiformes

Family

Characidae

Loc

Coptobrycon Géry, 1966

Langeani, Francisco & Serra, Jane Piton 2010
2010
Loc

Coptobrycon Géry, 1966: 226

Gery, J 1966: 226
1966
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