Simpsonichthys (Hypsolebias)

Wilson J. E. M. Costa, 2007, Taxonomic revision of the seasonal South American killifish genus Simpsonichthys (Teleostei: Cyprinodontiformes: Aplocheiloidei: Rivulidae)., Zootaxa 1669, pp. 1-134 : 54

publication ID

z01669p001

DOI

https://doi.org/10.5281/zenodo.6250128

persistent identifier

https://treatment.plazi.org/id/B30FA1B0-E93B-EBA4-06D1-C467AC17CBB9

treatment provided by

Thomas

scientific name

Simpsonichthys (Hypsolebias)
status

 

Subgenus Hypsolebias Costa, 2006

Hypsolebias Costa, 2006b: 17 (type species: Cynolebias flavicaudatus   ZBK Costa & Brasil; type by original designation).

Diagnosis

Distinguished from the other subgenera of Simpsonichthys   ZBK in having the second pharyngobranchial longer than wide (vs. wider than long). Another synapomorphy of Hypsolebias is the presence of a shortened lateroventral process of the hyomandibula, which independently occurs in some species of Spectrolebias (vs. wide process).

Included species

Simpsonichthys ocellatus   ZBK Costa, Nielsen & De Luca, S. stellatus (Costa & Brasil), S. nielseni   ZBK Costa, S. rufus   ZBK Costa, Nielsen & De Luca, S. notatus (Costa, Lacerda & Brasil), S. radiosus   ZBK Costa & Brasil, S. similis   ZBK Costa & Hellner, S. gibberatus Costa & Brasil, S. trilineatus (Costa & Brasil), S. auratus   ZBK Costa & Nielsen, S. virgulatus Costa & Brasil, S. hellneri (Berkenkamp), S. adornatus   ZBK Costa, S. fulminantis (Costa & Brasil), S. carlettoi   ZBK Costa & Nielsen, S. magnificus (Costa & Brasil), S. picturatus   ZBK Costa, S. antenori (Tulipano), S. igneus   ZBK Costa, S. macaubensis Costa & Suzart, S. ghisolfii   ZBK Costa, Cyrino & Nielsen, S. mediopapillatus Costa, S. flavicaudatus (Costa & Brasil), S. flagellatus   ZBK Costa, S. janaubensis Costa, S. marginatus   ZBK Costa & Brasil, S. delucai   ZBK Costa, S. alternatus (Costa & Brasil), S. multiradiatus (Costa & Brasil), S. flammeus (Costa), and S. brunoi   ZBK Costa.

Distribution

Central and northeastern Brazil, including the upper and middle rio Tocantins basin, middle rio São Francisco basin, lower rio Jaguaribe basin and adjacent coastal basins, and middle rio Jequitinhonha.

Key to species groups of the subgenus Hypsolebias

1a. Frontal squamation E-patterned.............................................................................................................3

1b. Frontal squamation F-patterned........................................................................ S. notatus species group

2a(1a). Flank with unbroken conspicuous dark gray bars in females................................................................3

2b(1a). Flank with dark gray inconspicuous broken bars or spots in females................................. S. magnificus species group

3a(2a). Anal fin long, spatula-shaped in females; no spots on caudal peduncle in females................................ ....................................................................................................................... S. flammeus species group

3b(2a). Anal fin short, semi-circular in females; black spots on caudal peduncle in females............................. ......................................................................................................................... S. antenori species group

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