Brown, P.M.J., Comont, R.F., Poland, R. & Roy, H.E. (2012) Wildlife reports: ladybirds. British Wildlife, 23, 208-210.

Ware, R.L. & Majerus, M.E.N. (2007) Intraguild predation of immature stages of British and Japanese coccinellids by the invasive ladybird Harmonia axyridis. BioControl, 53, 169-188.

Pell, J.K., Baverstock, J., Roy, H.E., Ware, R.L. & Majerus, M.E.N. (2007) Intraguild predation involving Harmonia axyridis: a review of current knowledge and future perspectives. BioControl, 53, 147-168.

Roy, H.E., Brown, P.M.J., Rothery, P., Ware, R.L. & Majerus, M.E.N. (2007) Interactions between the fungal pathogen Beauveria bassiana and three species of coccinellid: Harmonia axyridis, Coccinella septempunctata and Adalia bipunctata. BioControl, 53, 265-276.

Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L. & Majerus, M.E.N. (2007) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. BioControl, 53, 55-67.

Roy, H.E., Brown, P.M.J., Ware, R.L., Michie, L.J., Beckmann, B. & Majerus, M.E.N. (2008) The harlequin ladybird marches on. British Wildlife, 19, 182-186.

Ware, R.L., Ramon-Portugal, F., Magro, A., Ducamp, C., Hemptinne, J.-L. & Majerus, M.E.N. (2007) Chemical protection of Calvia quatuordecimguttata eggs against intraguild predation by the invasive ladybird Harmonia axyridis. BioControl, 53, 189-200.

Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L. & Majerus, M.E.N. (2008) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species. (eds H.E. Roy), & Wajnberg, E.), pp. 55-67. Springer Netherlands.

Ceryngier, P., Roy, H.E. & Ware, R.L. (2012) Natural Enemies Of Ladybird Beetles. In Ecology Of The Coccinellidae. Hodek, I., Honěk, A. And Van Emden, H. Kluwer Academic Publishers.

Roy, H.E., Brown, P.M.J., Frost, R. & Poland, R. (2011) Ladybirds (Coccinellidae) Of Britain And Ireland. Field Studies Council, Shrewsbury.