Henonemus

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Henonemus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Trichomycteridae
Subfamily: Stegophilinae
Genus: Henonemus
Eigenmann & Ward, 1907
Type species
Stegophilus intermedius
Eigenmann & Eigenmann, 1889
Binomial name

Henonemus intermedius
(Eigenmann & Eigenmann, 1889)
Henonemus macrops
(Steindachner, 1882)
Henonemus punctatus
(Boulenger, 1887)
Henonemus taxistigma
(Fowler, 1914)
Henonemus triacanthopomus
DoNascimiento & Provenzano, 2006
Synonyms

Cobitiglanis Fowler, 1914

Henonemus is a genus of catfishes (order Siluriformes) of the family Trichomycteridae. It includes five species, H. intermedius, H. macrops, H. punctatus, H. taxistigma, and H. triacanthopomus.[1][2]

Though the monophyly of Henonemus has previously been in doubt, leading to this genus being placed in synonymy with Stegophilus. However, monophyly has been argued for in 2006 and the genus was also recognized in a 2007 checklist of catfishes.[1][2]

H. intermedius originates from the Araguaia River basin in Brazil. H. macrops and H. punctatus both are known from the Amazon River basin, the former from Brazil and the latter from Brazil, Ecuador, and Peru. H. taxistigma inhabits the Rupununi River basin in Guyana.[2] H. triacanthopomus has been collected in the Apure and Arauca Rivers and in Caño Macareo in the Orinoco Delta, but is probably distributed through the entire middle and lower reaches of the Orinoco River basin.[1]

Fish of the genus Henonemus have an opercle with two odontodes (though H. triacanthopomus differs from other Henonemus in that there are three or four odontodes in specimens greater than 80 millimetres or 3.1&nbs;in SL) and the teeth of the most posterior row on the premaxilla and the dentary proximally turned to the midline then abruptly bent laterally in the distal half, and arranged in a compact band.[1] They may grow about 4.1–9.4 centimetres (1.6–3.7 in) SL.[3][4]

[edit] References

  1. ^ a b c d DoNascimiento, Carlos; Provenzano, Francisco (2006). "The Genus Henonemus (Siluriformes: Trichomycteridae) with a Description of a New Species from Venezuela". Copeia 2006 (2): 198–205. doi:10.1643/0045-8511(2006)6[198:TGHSTW]2.0.CO;2. 
  2. ^ a b c Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa 1418: 1–628. 
  3. ^ "Henonemus punctatus". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
  4. ^ "Henonemus triacanthopomus". FishBase. Ed. Ranier Froese and Daniel Pauly. July 2007 version. N.p.: FishBase, 2007.
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