Chaetostoma undescribed species

[Lujan 2017 pers. comm.]

Chaetostoma undescribed species
Photography by Ramiro Barriga, Museum of the Escuela Politecnica Nacional, Quito, Ecuador







This species is currently undescribed and there are no types. It will be studied by Nathan Lujan of the Center for Systematic Biology and Evolution, Academy of Natural Sciences, Drexel University, Philadelphia.


Currently thought to be known only from Jumandi Cave Archidona, near Tena, Ecuador (0o30’S, 78o00W), where it coexists with Astroblepus pholeter. This distribution requires confirmation.


Jumandi Cave consists of a vadose stream passage 800m in length with a further 400m of side passages. The stream rises from a sump, flows through the cave, falls over a waterfall 0.8m high, and resurges from the cave mouth. Water temperature is 15o‑20oC, pH neutral, and water medium hard. The other aquatic species to be commonly seen are a characin fish Creagrutus muleri, a prawn Machrobrachium brasiliense, and nymphs of a mayfly Euthyplocia. The last of these provide the bulk of the diet of A. pholeter (Brown 1981; Hanson 1981; Brown and Hanson 1981). Sket (1985) records the amphipod Bogidiella gammariformis.


There is currently no data on any aspect of the systematics of this species.

Conservation Status


Museum Holdings

None known.

Internet Resources

Web page for the Family Loricariidae

Key References

Sket, B. Journal Article 1979 [Fauna in the Caverna de Jumandi]
Brown, P. and Hanson, P.D. Journal Article 1981 The Jumandi Cave of Ecuador
Brown, P Report 1981 Southampton University expedition to Ecuador 1979
Hanson, P. D. Book Section 1981 The aquatic fauna
Sket, B. Journal Article 1985 Bogidiella (s.l.) gammariformis sp. n. (Amphipoda) from Ecuador
Peck, S. B. Journal Article 1985 The invertebate fauna of the tropical American caves. Part 6:Jumandi Cave, Ecuador
Romero, A. and Paulson, K.M. Journal Article 2001 Humbodt's alleged subterranean fish from Ecuador
Armbruster, J.W. Journal Article 2004 Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae
Lujan, N.K. and Armbruster, J.W. Journal Article 2012 Morphological and functional diversity of the mandible in suckermouth armored catfishes (Siluriformes: Loricariidae)
Lujan, N.K., Meza-Vargas, V., Astudillo-Clavijo, V., Barriga-Salazar, R. and Lopez-Fernandez, H. Book 2015 A multilocus molecular phylogeny for Chaetostoma clade genera and species with a review of Chaetostoma (Siluriformes: Loricariidae) from the central Andes
Hoese, G., Addison, A., Toulkeridis, T. and Toomey, R. Journal Article 2015 Observation of the catfish Chaetostoma microps climbing in a cave in Tena, Ecuador
Bauz, R., Andrea, C., Mena, A. and Estefania, A. Thesis 2015 Revista sobre la biodiversidad y el ecoturismo de las Cavernas de Jumandy, en el cantón Archidona en la Provincia de Napo-Tena
Sánchez, J., Zurita, M., Schwarz, A., Cárdenas, V.,Bonilla, J., Quilumba, D., ... and Monar, M. Book 2017 Guía espeleológica de la Provincia de Napo.
Constantin, S., Toulkeridis, T., Moldovan, O.T., Villacís, M. and Addison, A. Journal Article 2018 Caves and karst of Ecuador – state of the art and research perspectives
Jiménez, A., Ampuero, A., Valencia, B.G., Mayta, V.C., Cruz, F.W., Vuille, M., Novello, V.F., Misailidis Stríkis, N., Aranda, N., Conicelli, B., Journal Article 2022 Stable isotope variability of precipitation and cave drip-water at Jumandy cave, western Amazon River basin (Ecuador)