The Arthropod Collection of the Del Valle University of Guatemala (Universidad del Valle de Guatemala) contains more than 200,000 insect specimens, thereby being regarded as one of the largest entomological collections in Latin America. Above all, the passalid and scarabaeid beetles (Coleoptera) comprise one of the world’s biggest collections. The Arthropod Collection was established in 1975 by PhD Jack C. Schuster, and since then it has been developed considerably by various scientists and collaborators, thereby contributing to increasing our knowledge and understanding of the Guatemalan entomofauna.