No abstract

For the first time, the catalog of type specimens of ICN-MHN is presented with high resolution photographs. The catalog lists 87 species in 161 lots and includes 41 holotypes, 3 neotypes, and 117 lots of paratypes. Some doubts remain about type specimens of some species described by Miles and Dahl that were supposedly deposited at ICN-MHN. The history of the collection is reconstructed and valuable specimens once considered lost or destroyed have been rediscovered. The botanical and zoological collections of the ICN can be consulted online (http://www.biovirtual.unal.edu.co).

Two new species of Characidium, C. tatama and C. dule, are described from the biogeographic Chocó region in western Colombia. Both new species are supported by both morphological and molecular data. C. tatama from the San Juan River in the Pacific and C. dule from the Atrato River in the Caribbean portion of Colombia are both distributed in the upper and lower portions of these basins. An extensive comparison with other trans-and cis-Andean species of Characidium was made, in addition to species delimitation, using COI sequences by distinct methods (GMYC, ABGD, bPTP).

Characidium chancoense new species, is described from the transandean upper Río Cauca drainage in Colombia. It can be distinguished from all congeners by its pigmentation pattern that consists of 7–12 vertical bars, most of which are cuneate-shaped with the vertex ending on or just below the lateral-line scale series, except for the last 1–4, which are dorsoventrally elongate rectangular bars that extend well below the lateral line. Characidium chancoense is sympatric with C. caucanum Eigenmann, C. phoxocephalum Eigenmann, C. cf. zebra Eigenmann and C. cf. boavistae Steindachner. Unlike C. caucanum and C. cf. boavistae, C. chancoense does not appear to be sexually dimorphic.

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RediscoveRy of the holotype of CharaCidium sanCtjohanni dahl 1960 (chaRacifoRmes: cRenuchidae) fRom the colombian pacific slope henRy d. agudelo-ZamoRa 1 aRmando oRtega-laRa 1 donald c. taphoRn b. 2

Hábitos alimentares do aruanã (Osteoglossum bicirrhosum Vandelli, 1829) (Pisces: Osteoglossidae) no alto rio Putumayo, área do Parque Nacional de Paya, Putumayo, Colombia

La iniciativa QUYN nace por la necesidad de sistematizar y recopilar los registros de fototrampeo obtenidos en las actividades de docencia e investigación que desarrolla el Instituto de Ciencias Naturales (ICN) de la Universidad Nacional de Colombia. Gracias a esta metodología es posible generar información relevante para estudios de distribución, patrones de actividad y uso de hábitat de especies crípticas, poco conocidas o poco representadas en colecciones. De igual manera, esta iniciativa busca ser el punto de inicio para generar redes de trabajo con Instituciones de Educación Superior, Institutos de Investigación y otras instituciones que dentro de su desarrollo académico registran información importante de la diversidad de mamíferos en nuestro país. De este modo, QUYN tiene como objetivo divulgar los registros de especies en vida silvestre a partir de metodologías como el fototrampeo y la fotografía manual.