Cromwell chafer  (Prodontria lewisi)

The original range of the Cromwell chafer was around 500 hectares, but this was reduced to just 100 hectares following the construction of the Clyde Dam and the expansion of the township of Cromwell (4). Threats facing this species are not fully understood, but are thought to include predation by introduced hedgehogs (Erinaceus europaeus). The little owl (Athene noctua) is also known to predate upon this species (3). Habitat alteration is also likely to be a problem (2). At the present time, large areas of apparently suitable habitat are not occupied by this beetle. It is imperative that the reasons for its present distribution and the factors limiting the population are understood (3).

The site supporting this species has been fully protected since it became a nature reserve in 1983. Research and monitoring of the Cromwell chafer populations are on-going, and current work is focusing on the predation risk posed by hedgehogs and other predators, potential competitors, and understanding the life history of the species (3). Hopes are that the knowledge gained from these studies will help to develop and guide the effective conservation of this unique and very rare beetle.