Books Field Guide to the Ladybirds of Britain and Ireland (Roy & Brown, 2018) Illustrated by Richard Lewington. Bloomsbury Ladybirds (Naturalists’ Handbook 10) (Roy et al., 2013) Revised from Majerus and Kearns (1989) Pelagic Publishing, Exeter Papers The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology (Roy et al., 2016)
