Hypostomus plecostomus, from Weber et al. (2012).

Belongs within: Loricaroidei.

The Loricariidae, suckermouth catfishes, are a Neotropical family of armoured catfishes.

Characters (from Nelson et al. 2016): Body with bony plates; mouth ventral, with or without noticeable barbels; ventral lip papillose; adipose fin, when present, usually with a spine at anterior border; relatively long intestine; 23–38 vertebrae.

| i. s.: PanaqueSL86
| HypostomusSL86
| |--H. ancistroides (Ihering 1911)KC-L22
| |--H. latifronsAS09
| |--H. madieraeSL86
| |--H. plecostomusPRB10
| `--H. regani (Ihering 1905)KC-L22
| Liposarcus multiradiatusSLH06
| |--OtocinclusF15a
| | |--O. flexilis Cope 1894 [incl. O. fimbriatus Cope 1894]F15a
| | |--O. vestitus Cope 1871F15a
| | `--O. vittatusF18
| |--MicrolepidogasterF15a
| | |--M. laevior (Cope 1894) [=Hisonotus laevior]F15a
| | |--M. leptochilus (Cope 1894) [=Hisonotus leptochilus]F15a
| | `--M. nigricaudaF15a
| `--HypoptopomaF15a
| |--H. (Hypoptopoma)F15a
| | |--H. (H.) psilogaster Fowler 1915F15a
| | `--H. (H.) thoracatum [incl. H. bilobatum Cope 1870]F15a
| `--H. (Diapeltoplites Fowler 1915)F15a
| |--H. (*D.) gulare Cope 1878F15a
| |--H. (D.) jobertiF15a
| `--H. (D.) steindachneriF15a
| |--Rhineloricaria cadeaeF15a
| |--Harttia platystomaF15a
| |--Sturisoma guentheriF15a
| |--Farlowella nattereriSLH06
| |--Lamontichthys stibarosSLH06
| |--LoricariichthysF15a
| | |--L. anusF15a
| | |--L. derbyi Fowler 1915F15b
| | |--L. hauxwelli Fowler 1915F15a
| | |--L. maculatus (Bloch 1794) [=Loricaria maculata; incl. Loricaria amazonica Castelnau 1855]F15a
| | |--L. platymetopon Isbrücker & Nijssen 1979KC-L22
| | `--L. typus (Bleeker 1864)F15a
| `--Loricaria Linnaeus 1758L58
| |--*L. cataphracta Linnaeus 1758L58
| |--L. carinataF15a
| |--L. latirostris Boulenger 1900B00
| |--L. paulina Boulenger 1900B00
| |--L. prolixa (Isbrücker & Nijssen 1978)KC-L22
| |--L. simillimaSLH06
| |--L. spixiiF15b
| `--L. stubeliiF15a
| |--P. ambrosettii (Holmberg 1893)KC-L22
| `--P. multiradiatus [incl. Liposarcus jeanesianus Cope 1874, L. varius Cope 1871]F15a
|--Lithoxus lithoidesF15a
| |--C. aspidolepisG66
| |--C. maculatusF15a
| `--C. sericeus [=Xenocara sericea]F15a
| |--A. alga (Cope 1871) [=Chaetostomus alga; incl. C. malacops Cope 1871, C. tectirostris Cope 1871]F15a
| |--A. chagresiSL86
| |--A. cirrhosusF16 [=Xenochara cirrhosumF16; incl. Chaetostomus variiolus Cope 1871F15a]
| |--A. dolichopteryxF15a
| `--A. hoplogenysF15a
|--P. ancistroidesF15b
|--P. aspilogaster Cope 1894F15a
|--P. auroguttatusF15b
|--P. carinatusF15a
|--P. commersoniiF15a
|--P. emarginatus [incl. P. biseriatus Cope 1871, P. scopularius Cope 1871, P. virescens Cope 1874]F15a
|--P. heylandi Boulenger 1900B00
|--P. jaguribensis Fowler 1915F15b
|--P. lexiF15b
|--P. plecostomus [incl. P. guacari Regan 1906]F16
|--P. robinii [=Hypostomus robinii]F16
|--P. unaeF15b
|--P. vaillantiF15a
|--P. variipictusF15b
|--P. verresF15a
`--P. wuchereriF15b

*Type species of generic name indicated


[AS09] Alfaro, M. E., F. Santini, C. Brock, H. Alamillo, A. Dornburg, D. L. Rabosky, G. Carnevale & L. J. Harmon. 2009. Nine exceptional radiations plus high turnover explain species diversity in jawed vertebrates. Proceedings of the National Academy of Sciences of the USA 106 (32): 13410–13414.

[B00] Boulenger, G. A. 1900. Descriptions of three new species of siluroid fishes from southern Brazil. Annals and Magazine of Natural History, series 7, 5: 165–167.

[F15a] Fowler, H. W. 1915a. Notes on nematognathous fishes. Proceedings of the Academy of Natural Sciences of Philadelphia 67 (2): 203–243.

[F15b] Fowler, H. W. 1915b. Cold-blooded vertebrates from Florida, the West Indies, Costa Rica, and eastern Brazil. Proceedings of the Academy of Natural Sciences of Philadelphia 67 (2): 244–269.

[F16] Fowler, H. W. 1916. The fishes of Trinidad, Grenada, and St. Lucia, British West Indies. Proceedings of the Academy of Natural Sciences of Philadelphia 67 (3): 520–548.

[F18] Fowler, H. W. 1918. A new characin from Paraguay. Proceedings of the Academy of Natural Sciences of Philadelphia 70: 141–143.

[G66] Günther, A. 1866. Memoir on the fishes of the states of Central America collected by Messrs. Salvin and Godman and Capt. Dow. Proceedings of the Zoological Society of London 1866: 600–604.

[KC-L22] Kmentová, N., A. J. Cruz-Laufer, A. Pariselle, K. Smeets, T. Artois & M. P. M. Vanhove. 2022. Dactylogyridae 2022: a meta-analysis of phylogenetic studies and generic diagnoses of parasitic flatworms using published genetic and morphological data. International Journal for Parasitology 52: 427–457.

[L58] Linnaeus, C. 1758. Systema Naturae per Regna Tria Naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Laurentii Salvii: Holmiae.

Nelson, J. S., T. C. Grande & M. V. H. Wilson. 2016. Fishes of the World 5th ed. Wiley

[PRB10] Plaul, S. E., N. G. Romero & C. G. Barbeito. 2010. Distribution of the exotic parasite, Lernaea cyprinacea (Copepoda, Lernaeidae) in Argentina. Bulletin of the European Association of Fish Pathologists 30 (2): 65–73.

[SL86] Schaefer, S. A., & G. V. Lauder. 1986. Historical transformation of functional design: evolutionary morphology of feeding mechanisms in loricarioid catfishes. Systematic Zoology 35 (4): 489–508.

[SLH06] Sullivan, J. P., J. G. Lundberg & M. Hardman. 2006. A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences. Molecular Phylogenetics and Evolution 41: 636–662.

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