The dataset consists of location records of the Harlequin ladybird (Harmonia axyridis) in the UK. The records span from 2004 to 2016 with three records from 2003. Records were collected from several sources with the majority coming from online recording via the Harlequin...

Records of leaf damage caused by and parasitism of Cameraria ohridella in Britain in 2010 collected with a citizen science approach as part of the Conker Tree Science citizen science project, plus validation of the data. Over 3500 people in Great Britain provided data...