Robertson, L. N., and G. B. Simpson. 1989. Sampling and dispersion of Pterohelaeus alternatus Pascoe and Gonocephalum macleayi (Blackburn) (Coleoptera: Tenebrionidae) larvae in soil. Queensland Journal of Agricultural and Animal Sciences 45:189-193.
Robertson, L. N., and G. B. Simpson. 1989. Sampling and dispersion of Pterohelaeus alternatus Pascoe and Gonocephalum macleayi (Blackburn) (Coleoptera: Tenebrionidae) larvae in soil. Queensland Journal of Agricultural and Animal Sciences 45:189-193.