1. Armstrong HE (1987) Ecology of the Cromwell chafer beetle, Unpublished MSc. thesis, Department of Zoology, University of Otago, Dunedin, New Zealand
2. Armstrong HE (1990) Reassessment of the Cromwell chafer beetle population. Report for Department of Conservation, Otago Conservancy, Dunedin, 10 pp
3. Barratt BIP, Campbell RA (1982) Biology of the striped chafer, Odontria striata (Coleoptera: Scarabaeidae) I. The adult, flight and ground surface activity, female reproductive maturation, and food plant selection. N Z J Zool 9:249–266
4. Barratt BIP, Ferguson CM, Logan RAS (2003) Monitoring larval density of the Cromwell chafer, Prodontria lewisii Broun (Coleoptera: Scarabaeidae): sampling 2003. Report for Department of Conservation, 13 pp
5. Barratt BIP, Patrick BM (1992) Conservation of the Cromwell chafer. In: Proceedings of the 41st Entomological Society of New Zealand Annual Conference, Central Institute of Technology, Heretaunga, pp 39–42. Entomological Society of New Zealand