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Abstract
The outlet of the Quebrada Azul River (situated in the Calima River, Valle del Cauca) con forms an intricate, very humid forest that acts as a corridor transitional of fauna between the cold high Andean forests and the pluvial warm forests of the biogeographic Choco. This transitional character, and the excellent state of conservation of its ecological formations, transforms this region and its biodiversity into an excellent biological observatory of great regional and national interest. For this it was chosen this zone to the study of the copronecrophilus beetles, to bring to the knowledge to the structure of the guild and preliminar ecological aspects. They were done sampies with copro aud necro baits installed in footpath under dosel, which were readditioned and collected daily. The sample added up 552 specimens joined in 20 species and 11 genus of Scarabaeinae (Col. Scarabaeinae); the Shannon index obtained (2.32) express a high diversity in comparison with other samples of Biogeographical Chocó; the equitability (0.77) express low populations in the most of the species, the three species most collected were Phanaeus pyrois Bates (168 specimens, 30,48%), Ontherus didymus Er. (62 specimens, 11.23%) and Canthon moniliatus Bates (59 specimens, 10.68%) whose populations joined conform the 52.3% of the total capture. lt is discuss the obtained data and it is compare with the observed in other points of the Biogeographical Chocó and similar studies in the neotropic. It is recommended the intensification of these samples and the strengthening of the national museum of this fauna.
