Vallejo, Fernando, Miguel Ángel Morón, and Sergio Orduz. 2007. “Biology of Phyllophaga Obsoleta Blanchard (Coleoptera: Melolonthidae): A Rootchafer Species from the White Grubs Complex of Colombia”. Boletín Científico. Centro de Museos 11 (January):188-204. https://revistasojs.ucaldas.edu.co/index.php/boletincientifico/article/view/5374.