Onthophagus (Parascatonomus) monticupreus
Onthophagus pilularius and its close relatives in Sundaland: a taxonomic reappraisal (Coleoptera, Scarabaeidae, Scarabaeinae). Deutsche Entomologische Zeitschrift, 56(1) 2009: 41-55. 49 [Zoological Record Volume 145]