References: (1) Luxmoore R. 2017 Letters to the Editor Hebridean Naturalist: Journal of Curracag Outer Hebrides Natural History Society, 17: pp 78-80 (2) Roy et al. 2012 - Defra project report - Non-native species in Great Britain.pdf (3) Roseanna Cunningham MSP, Cabinet Secretary for Environment, Climate Change & Land Reform; June 2020 letter to Dr Alasdair Allan MSP; ref: 202000037834 (4) Mairi Gougeon MSP, Cabinet Secretary for Rural Affairs and Islands; 29 March...