Species Account

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Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Very scarce and local resident.

Local Record: Grade 3   See here for explanation

Flight time: One generation, May-Jul.

Forewing: 10-12mm.

Foodplant: Yellow-rattle.

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 recorded18911891
Year last recorded20112011
Number of records73146
Number of individuals221442
Unique positions3774
Unique locations2550
Adult records63126
Immature records00

For the region, we have a total of 146 records from 50 sites. Earliest record on file is in 1891.


1807 Grass Rivulet 03
© Debra Saunders
1807 Grass Rivulet 02
© Gordon Hopkins
1807 Grass Rivulet 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread species in Britain, the larva feeding in the seed capsules of yellow rattle (Rhinanthus minor). In Dorset, this early summer moth is rare and has declined as the unimproved grassland, particularly hay meadow, within which its host plant flourishes, has mostly been ploughed and re-seeded since the Second World War and such changes in farm practices have meant that arable no longer provides a haven for wild flowers in the way it once did. Localities where yellow rattle still supports colonies of the moth are few and far between: Fontmell Down, Stubhampton Bottom, Slepe Heath and Durlston. The colony within Durlston Country Park is particularly robust probably because a sizeable portion of it is managed as hay meadow with yellow rattle predominating. The hay meadows are subject to grazing and rotational cutting with different cycles applied to different aged compartments.

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