González-Alvarado, A. and Vaz-de-Mello, F.Z. 2021. Taxonomic revision of the Deltohyboma Lane, 1946 gilli species group (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilum). European Journal of Taxonomy. 775, 1 (Oct. 2021), 86-106. DOI:https://doi.org/10.5852/ejt.2021.775.1551.