Research and Publications
Native ladybird decline caused by the invasive harlequin ladybird Harmonia axyridis: evidence from a long-term field study. Insect Conservation and Diversity, 11, 230-239.
(2018) In the shadow of the condor: invasive Harmonia axyridis found at very high altitude in the Chilean Andes. Insect Conservation and Diversity, 10, 483-487.
(2017) Agricultural management and climatic change are the major drivers of biodiversity change in the UK. PLoS ONE, 11, e0151595.
(2016) 
The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology. Biological Invasions, 18, 997-1044.
(2016) The contribution of volunteer recorders to our understanding of biological invasions. Biological Journal of the Linnean Society, 115, 678–689.
(2015) 
(2013)
Data Accuracy and Citizen Science: Lessons Learned from Studying Lady Beetles in the US and UK. Frontiers in Ecology and the Environment, 10, 471- 476.
(2012) (2012)
Ladybirds (Coccinellidae) Of Britain And Ireland. Field Studies Council, Shrewsbury.
(2011) (2010)
The most northerly record of the harlequin ladybird (Col., Coccinellidae) in the British Isles. Entomologist's Monthly Magazine, 145, 43-44.
(2009) The harlequin ladybird, Harmonia axyridis, reaches Scotland. Entomologists’ Record and Journal of Variation, 120, 42-43.
(2008) (2008)
Harmonia axyridis in Europe: spread and distribution of a non-native coccinellid. BioControl, 53, 5-21.
(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. pp. 55-67. Springer Netherlands.
(2008) (2007)
(2007)
(2007)
The spread of the harlequin ladybird in Cambridgeshire and Huntingdonshire. Nature in Cambridgeshire, 49, 55-57.
(2007) (2007)
Biological Records Centre Annual Report 2005-2006. Joint Nature Conservation Committee, Peterborough.
(2006)