Chaetostoma

The Chaetostoma Group
Chaetostoma Tschudi, 1845, Cordylancistrus Isbrücker, 1980, Dolichancistrus Isbrücker, 1980, Leptoancistrus Meek and Hildebrand, 1916

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Chaetostoma Photo by K.S. Cummings	Dolichancistrus Photo by K.S. Cummings
Cordylancistrus Photo by K.S. Cummings	Leptoancistrus Photo by K.S. Cummings

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Armbruster (1997) determines that Cordylancistrus platyrhynchus is actually a member of Chaetostoma sensu stricto. Because of this, the only good characteristic separating Chaetostoma from Cordylancistrus, Dolichancistrus, and Leptoancistrus (the lack of plates on the tip of the snout) is no longer valid. To solve the problems inherrent in the now faulty definition of Chaetostoma, and to make the best use of the Linnean hierarchy to express evolutionary relationships, it would be best if Cordylancistrus, Dolichancistrus, and Leptoancistrus are recognized as subgenera of Chaetostoma and C. platyrhynchus be placed in the nominate subgenus; however, such changes are not made at this time. Lipopterichthys, is nothing more than a modified Chaetostoma and is considered a synonym of Chaetostoma. Hypocolpterus is also just a Chaetostoma. Because of the close relationships of these four genera, they are treated as a group. Click on the images above to see more detail about the genera.

SPECIES

Chaetostoma

C. aequinoctiale Pellegrin 1909
C. alternifasciatum Fowler 1945
C. analis (Fowler 1943)
C. anomalum Regan 1903
C. branickii Steindachner 1882
C. brevilabiatum Dahl 1942
C. breve Regan 1904
C. carrioni (Norman, 1935)
C. dermorhynchum Boulenger 1887
C. dorsale Eignemann 1922
C. dupouii Fernandez-Yepez 1945
C. fischeri Steindachner 1879
C. furcatum Fowler 1940
C. guariense Steindachner 1882
C. jegui Rapp Py-Daniel 1991
C. lepturum Regan 1912
C. leucomelas Eigenmann 1917
C. lineopunctatum Eigenmann & Allen 1942
C. loborhynchos Tschudi 1845
C. machiquense Fernandez-Yepez & Martin Salazar 1953
C. maculatum Regan 1904
C. marcapatae Regan 1904
C. marginatum Regan 1904
C. marmorescens Eigenmann & Allen 1942
C. microps Günther 1864
C. mollinasum Pearson 1937
C. niveum Fowler 1944
C. nudirostre Lütken 1874
C. palmeri Regan 1912
C. patiae Fowler 1945
C. paucispinis Regan 1912
C. pearsei Eigenmann 1920
C. platyrhynchus (Fowler 1943)
C. sericeum Cope 1872
C. sovichthys Schultz 1944
C. stanii (Kröyer in Lütken 1874)
C. taczanowskii Steindachner 1883
C. tachiraense Schultz 1944
C. thomsoni Regan 1904
C. trifasciatum Steindachner 1902
C. vagum Fowler 1943
C. venezuelae Scultz 1944
C. yurubiense Ceas & Page 1996

Cordylancistrus

C. daguae (Eigenmann 1912)
C. platycephalus (Boulenger 1889)
C. torbesensis (Schultz 1944)
C. perijae Perez and Provenzano 1996

Dolichancistrus

D. atratoensis (Dahl 1960)
D. carnegiei (Eigenmann 1916)
D. cobrensis (Schultz 1944)
D. fuessli (Steindachner 1911)
D. pediculatus (Eigenmann 1917)
D. setosus (Boulenger 1887)

Leptoancistrus

L. canensis (Meek and Hildebrand 1916)
L. cordobensis Dahl 1964

LITERATURE CITED

Armbruster, J.W. Submitted. Phylogenetic relationships of the suckermouth armored catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae. Proceedings of Academy of Natural Sciences of Philadelphia.