Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nationally Scarce B

Local Status: Rare and very local resident.

Local Record: Grade 3   See here for explanation

Flight time: Jun and Aug-Sep.

Forewing: 9-14mm.

Foodplant: Marsh Ragwort.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded183620051836
Year last recorded200520082008
Number of records14640
Number of individuals9131280
Unique positions8322
Unique locations7218
Adult records8628
Immature records204

For the region, we have a total of 40 records from 18 sites. Earliest record on file is in 1836.


1502 Platyptilia isodactylus 02
© Julian Francis
1502 Platyptilia isodactylus 01
© Jenny Seawright

Species Account

Davey, P., 2020: Hoary Plume Platyptilia isodactylus: : A species with a scattered distribution across the southern half of Britain, the larva feeding on marsh ragwort Senecio aquatica. In Dorset, this species is restricted to water meadow habitat where marsh ragwort grows, notably along the valley floors that channel the lower reaches of the rivers: Frome, Stour and Avon.

See background to species accounts.  Index of Vernacular names - Search - Random Species