Reid, C.A. and Tees, N.A. 2023. A new, but possibly extinct, species of Semanopterus Hope, 1847 from Lord Howe Island, in the southwestern Pacific Ocean (Coleoptera: Scarabaeidae: Dynastinae). Zootaxa. 5306, 5 (Jun. 2023), 563–570. DOI:https://doi.org/10.11646/zootaxa.5306.5.4.