Auchenipterus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Siluriformes

Familia: Auchenipteridae
Subfamilia: Auchenipterinae
Genus: Auchenipterus
Species: A. affinis – A. ambyiacus – A. brachyurus – A. brevibarbis – A. brevior – A. britskii – A. ceratophysus – A. demerarae – A. dentatus – A. fordicei – A. furcatus – A. hasemani – A. heckelii – A. insignis – A. isacanthus – A. jequitinhonhae – A. lacustris – A. longimanus – A. maculosus – A. magdalenae – A. menezesi – A. nigripinnis – A. nuchalis – A. obscurus – A. osteomystax – A. paysanduanus – A. punctatus – A. striatulus – A. thoracatus – A. thoracicus – A. trachycorystes
Name

Auchenipterus Valenciennes in Cuvier and Valenciennes, 1840
References

FishBase
Integrated Taxonomic Information System (ITIS)
Auchenipterus is a genus of driftwood catfishes (order Siluriformes).[1][2]
Taxonomy

The genus is hypothesized to be monophyletic, diagnosed by the shared presence of grooves in the ventral surface of the head that accommodate adducted mental barbels. The presence of papillae on the dorsal and medial surface of the ossified maxillary barbel of mature males is also a possible synapomorphy, but in three species this cannot be confirmed as there are no adult male specimens yet discovered.[1]

This genus contains 11 species:

Auchenipterus ambyiacus Fowler, 1915
Auchenipterus brachyurus (Cope, 1878)
Auchenipterus brevior C. H. Eigenmann, 1912
Auchenipterus britskii Ferraris & Vari, 1999
Auchenipterus demerarae C. H. Eigenmann, 1912
Auchenipterus dentatus Valenciennes, 1840
Auchenipterus fordicei C. H. Eigenmann & R. S. Eigenmann, 1888
Auchenipterus menezesi Ferraris & Vari, 1999
Auchenipterus nigripinnis (Boulenger, 1895)
Auchenipterus nuchalis (Spix & Agassiz, 1829)
Auchenipterus osteomystax (A. Miranda-Ribeiro, 1918)

Distribution

The neotropical genus Auchenipterus is widely distributed in most of the river systems east of the Andean Cordilleras.[1] The species are found through the Orinoco River, Amazon River, and Rio de La Plata basins, and the coastal drainages of the Guianas; one species, A. menezesi, originates from the Rio Pindark-Mirim and Rio Parnaiba basins of northeastern Brazil.[1] In some regions they are abundant enough to be commercially important.[1]
Description

Auchenipterus species have a number of pronounced sexually dimorphic features of the head, maxillary barbels, and anal fin.[1]
References

Ferraris, Carl J. Jr.; Vari, Richard P. (1999). "The South American catfish genus Auchenipterus Valenciennes, 1840 (Ostariophysi: Siluriformes: Auchenipteridae): monophyly and relationships, with a revisionary study". Zoological Journal of the Linnean Society. 126 (4): 387–450. doi:10.1111/j.1096-3642.1999.tb00156.x.
Ferraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628. doi:10.11646/zootaxa.1418.1.1.