Richards, A.M. 1981 Rhyzobius ventralis (Erichson) and R. forestieri (Mulsant) (Coleoptera: Coccinellidae), their biology and value for scale insect control.. Bulletin of Entomological Research 71: 33-46.

Notes: Principal prey of this coccinellid is Eriococcus coriaceus on eucalyptus; minor hosts are Nipaecoccus aurilanatus on Araucaria cunninghamii, Pseudococcus longispinus on Eucalyptus viminalis, Icerya sp. on Grevillea punicea, and Phenacaspis grandilobis on Banksia spp.