An illustrated key to identify the adults at the generic level of Dynastinae known from Colombia is provided. A synopsis for each genus is given with updated information on the diversity and distribution of species in Colombia and worldwide.

Pentodontini is the most diverse tribe of Dynastinae (Coleoptera: Scarabaeidae), and most of the genera are restricted to a single biogeographic region. In this work, the taxonomic composition of the Pentodontini in Colombia was determined, and genera and species were diagnosed based on external morphology and male genitalia. Records of 1,580 specimens from 31 departments and 398 localities in Colombia were obtained from 24 species in the genera Bothynus Hope, Denhezia Dechambre, Euetheola Bates, Hylobothynus Ohaus, Oxyligyrus Arrow, Parapucaya Prell, Pucaya Ohaus, and Tomarus Erichson. Oxyligyrus cayennensis Endrödi, Tomarus cicatricosus (Prell), and T. pullus (Prell) are reported for the first time from Colombia. Pucaya punctata Endrödi is reduced to synonymy with Pucaya pulchra Arrow. Possible changes in the classification of Denhezia Dechambre are discussed. Dichotomous keys are provided for Colombian genera and species. Taxonomic descriptions and distribution maps are included for all species.

An updated and annotated checklist of the Pentodontini (Coleoptera: Scarabaeidae: Dynastinae) of the New World is presented. The tribe is composed of 32 genera and 151 species, including the introduced species Heteronychus arator (Fabricius).

Se describe e ilustra Passalus (Pertinax) unimagdalenae sp. n., especie de montaña distribuida entre los 1560 y 2309 msnm en la Sierra Nevada de Santa Marta.

Se presenta una lista comentada de las especies de escarabajos fitófagos presentes en los departamentos de Cundinamarca, Boyacá y Santander, ubicados en la Cordillera Oriental colombiana. Se encontraron 150 especies pertenecientes a 56 géneros. Para la mayoría de las especies se presentan notas sobre su distribución, biología, algunos comentarios taxonómicos y fotografías. Las especies Cyclocephala longa y Pelidnota xanthopyga se registran por primera vez para Colombia, mientras que P. paralella, P. polita, P. prasina y Stenocrates bicarinatus son registros nuevos para los Andes orientales colombianos.