Microcambeva Explained

Microcambeva is a genus of catfishes (order Siluriformes) of the family Trichomycteridae.[1] [2]

Species

There are currently nine recognized species in this genus:[3] [4] [5] [6]

Distribution

Microcambeva is thought to be widespread along coastal basins of southern, southeastern, and eastern Brazil. M. barbata originates from Atlantic coastal drainages of Rio de Janeiro and Espírito Santo states in Brazil. M. ribeirae originates from the Ribeira do Iguape River basin of southeastern Brazil. Two undescribed species of Microcambeva are known from the Doce River basin in Minas Gerais state and Jucuruçu River in Bahia state.[7]

Description

The two currently described species of Microcambeva have similar general morphology.[7] M. ribeirae has a maximum recorded length of 4.8 centimetres (1.9 in) SL.[7] M. ribeirae is distinguished from M. barbata by a series of morphological features, including the extent of the nasal barbels (to the nostril instead of the eye), the position of the eye (posterior half of head instead of on central portion), the first pectoral fin ray being shorter than the posterior ones (instead of the first ray being elongate and forming a prominent filament), the anal fin origin behind the vertical through the base of the last dorsal fin rays (instead of at this vertical), and others.[7]

Habitat

M. ribeirae has been found in clear, shallow streams (about 60 cm or 24 in deep) with a gray, sandy bottom in which the specimens were found entirely buried except for snout and barbels.[7]

Notes and References

  1. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Carl J. Jr.. Ferraris. Zootaxa. 1418. 1–628. 2007. 10.11646/zootaxa.1418.1.1.
  2. Mattos, JLO & SMQ Lima, 2010. Microcambeva draco, a new species from northeastern Brazil (Siluriformes: Trichomycteridae). Ichthyological Exploration of Freshwaters 21: 233–238.
  3. Medeiros. Lucas Silva De. Moreira. Cristiano Rangel. Pinna. Mário De. Lima. Sergio Maia Queiroz. 2020-12-14. A new catfish species of Microcambeva Costa & Bockmann 1994 (Siluriformes: Trichomycteridae) from a coastal basin in Rio de Janeiro State, southeastern Brazil. Zootaxa. en. 4895. 1. 111–123. 10.11646/zootaxa.4895.1.6. 33311056. 229178294. 1175-5334.
  4. Costa. W.J.E.M.. Katz. A. M. . Mattos. J.LO.. Rangel-Pereira. F. S.. 2019. Two new species of miniature psammophilic sarcoglanidine catfishes of the genus Microcambeva from the Atlantic Forest of eastern Brazil (Siluriformes: Trichomycteridae). Journal of Natural History. en. 53. 29–30. 1837–1851. 10.1080/00222933.2019.1669729. 208575449. 1464-5262.
  5. Costa. W.J.E.M . Vilardo. P.. Katz. A.. 2020. Sympatric sister species with divergent morphological features of psammophilic catfishes of the south-eastern Brazilian genus Microcambeva (Siluriformes: Trichomycteridae). Zoologischer Anzeiger. en. 285. 1. 12–17. 10.1016/j.jcz.2020.01.001. 214362213 . 0044-5231.
  6. Costa. W.J.E.M . Katz. A.. 2021. Comparative morphology, phylogeny, classification and evolution of interstitial habits in microcambevine catfishes (Siluriformes: Trichomycteridae). Taxonomy . en. 1. 4. 313–344. 10.3390/taxonomy1040025 . 2673-6500. free .
  7. Microcambeva ribeirae sp. n. (Teleostei: Siluriformes: Trichomycteridae): a new sarcoglanidine catfish from the Rio Ribeira do Iguape basin, southeastern Brazil. Wilson J.E.M.. Costa. Lima, Sérgio M.Q. . Bizerril, Carlos Roberto S.F. . Zootaxa. 563. 1–10. 2004. 10.11646/zootaxa.563.1.1.

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