Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nationally Scarce B

Local Status: Scarce and thinly distributed or restricted resident.

Local Record: Grade 3   See here for explanation

Flight time: Mid May-Aug.

Forewing: 10-14mm.

Foodplant: Spear Thistle, 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 recorded188720081887
Year last recorded200820082008
Number of records32166
Number of individuals22146
Unique positions15132
Unique locations16134
Adult records23148
Immature records000

For the region, we have a total of 66 records from 34 sites. Earliest record on file is in 1887.


1480 Homoeosoma nebulella 01
© Debra Saunders

Species Account

For further information refer UK Moths.

Davey, P., 2009: A species of waste ground on the coasts and light soils inland across southern Britain, the larva feeding on the flowers and seeds of ragwort (Senecio jacobaea) and spear thistle (Cirsium vulgare). In Dorset, the status of the moth is difficult to assess, although records tend to suggest that of an immigrant and transient resident. In the past the moth was rarely encountered: at light on Portland, (C Partridge), (N Richardson), on 28 June 1901 (Reverend E Bankes), Bonsley Common, (D Hervey), Bloxworth, amongst musk thistle in a neglected grass field in early July 1897 (O Pickard Cambridge), Cranborne Chase, (D Hervey), Corfe Castle, on 11 July 1892, Swanage, on 1889 (A Robertson), on 27 July 1897 (Reverend E Bankes), in July 1931 (PHa).

More recently light trap records show an increase in numbers, particularly during the phenomenal immigrant year of 2006, and dates in several records in other years also coincided with east to south-easterly airflows from central or northern France. All recent records follow: Frome St Quentin, two on 20 August 1995 (D Pearman, Dr P Sterling), Wyke Regis, on 13 June 2006 (D Foot), Portland, on 3 July 1976 (D ffennell), 30 May 1992, 10 August 1992 (M Cade), St Albans Head, on 6 July 1987 (P Davey), Puddletown, on 23 June 2006, 25 July 2006, 28 July 2006, 5 August 2006, 6 June 2007 (H Wood Homer), Piddles Wood, on 1 September 1995 (P Davey), Motcombe, two on 16 August 2006 (P Butter), Gaunts Common, on 26 May 1992, 15 September 1992 (P Davey), Swanage, on 6 August 1992 (B Skinner), Alderholt, on 1 June 2008 (T Morris), Stanpit, on 8 June 2008 (P Davey), West Blagdon, 26 August 2003 (D Green).

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