This set continues the series of EPPO datasheets at present constituted by Quarantine Pests for Europe (2nd edition), the first supplementary set published in 1999 in the EPPO Bulletin issue 29, 459–506, the second supplementary set published in 2005 in issue 35, 361–475, the third supplementary set published in 2006 in issue 36, 1–9, the fourth supplementary set published in 2007 in issue 37, 223–245, the fifth, sixth and seventh supplementary sets published in 2008 in issue 38, 53–63, 161–166 and 439–449, respectively, the eighth and ninth supplementary sets published in issue 39, 41–64 and 487–499, the tenth supplementary set published in issue 40, 401–406, the eleventh supplementary set published in issue 41, 407–418, the twelfth and thirteenth supplementary sets published in issue 43, 139–143 and 195–196, the fourteenth, fifteenth and sixteenth supplementary sets published in issue 44, 5–10, 149–163 and 474–478, the seventeenth supplementary set published in issue 45, 2–13, the eighteenth supplementary set published in issue 46, 02–24, the nineteenth supplementary set published in issue 47, 524–548, the twentieth and twenty‐first supplementary sets published in issue 49, 48–72 and 259–297, the twenty‐second set published in issue 50, 156‐169, the twenty‐third set published in issue 50, 241‐248, the 24th set published in issue 50, 526‐548 and the 25th set published in issue 52, 371–373. It contains a further datasheet produced as part of the core work programme of EPPO datasheets as well as information on the new progress made in the datasheets project.